diff --git a/tests/common/java/ParseExceptionTest.kt b/tests/common/java/ParseExceptionTest.kt
new file mode 100644
index 0000000..b702d61
--- /dev/null
+++ b/tests/common/java/ParseExceptionTest.kt
@@ -0,0 +1,52 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import android.net.ParseException
+import android.os.Build
+import androidx.test.ext.junit.runners.AndroidJUnit4
+import androidx.test.filters.SmallTest
+import com.android.testutils.DevSdkIgnoreRule
+import junit.framework.Assert.assertEquals
+import junit.framework.Assert.assertNull
+import org.junit.Rule
+import org.junit.Test
+import org.junit.runner.RunWith
+
+@SmallTest
+@RunWith(AndroidJUnit4::class)
+class ParseExceptionTest {
+    @get:Rule
+    val ignoreRule = DevSdkIgnoreRule(ignoreClassUpTo = Build.VERSION_CODES.R)
+
+    @Test
+    fun testConstructor_WithCause() {
+        val testMessage = "Test message"
+        val base = Exception("Test")
+        val exception = ParseException(testMessage, base)
+
+        assertEquals(testMessage, exception.response)
+        assertEquals(base, exception.cause)
+    }
+
+    @Test
+    fun testConstructor_NoCause() {
+        val testMessage = "Test message"
+        val exception = ParseException(testMessage)
+
+        assertEquals(testMessage, exception.response)
+        assertNull(exception.cause)
+    }
+}
\ No newline at end of file
diff --git a/tests/common/java/android/net/CaptivePortalDataTest.kt b/tests/common/java/android/net/CaptivePortalDataTest.kt
new file mode 100644
index 0000000..18a9331
--- /dev/null
+++ b/tests/common/java/android/net/CaptivePortalDataTest.kt
@@ -0,0 +1,190 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.net
+
+import android.os.Build
+import androidx.test.filters.SmallTest
+import com.android.modules.utils.build.SdkLevel
+import com.android.testutils.assertParcelSane
+import com.android.testutils.assertParcelingIsLossless
+import com.android.testutils.DevSdkIgnoreRule
+import com.android.testutils.DevSdkIgnoreRule.IgnoreUpTo
+import com.android.testutils.DevSdkIgnoreRunner
+import org.junit.Assert.assertFalse
+import org.junit.Assert.assertTrue
+import org.junit.Rule
+import org.junit.Test
+import org.junit.runner.RunWith
+import kotlin.test.assertEquals
+import kotlin.test.assertNotEquals
+
+@SmallTest
+@RunWith(DevSdkIgnoreRunner::class)
+@IgnoreUpTo(Build.VERSION_CODES.Q)
+class CaptivePortalDataTest {
+    @Rule @JvmField
+    val ignoreRule = DevSdkIgnoreRule()
+
+    private val data = CaptivePortalData.Builder()
+            .setRefreshTime(123L)
+            .setUserPortalUrl(Uri.parse("https://portal.example.com/test"))
+            .setVenueInfoUrl(Uri.parse("https://venue.example.com/test"))
+            .setSessionExtendable(true)
+            .setBytesRemaining(456L)
+            .setExpiryTime(789L)
+            .setCaptive(true)
+            .apply {
+                if (SdkLevel.isAtLeastS()) {
+                    setVenueFriendlyName("venue friendly name")
+                }
+            }
+            .build()
+
+    private val dataFromPasspoint = CaptivePortalData.Builder()
+            .setCaptive(true)
+            .apply {
+                if (SdkLevel.isAtLeastS()) {
+                    setVenueFriendlyName("venue friendly name")
+                    setUserPortalUrl(Uri.parse("https://tc.example.com/passpoint"),
+                            CaptivePortalData.CAPTIVE_PORTAL_DATA_SOURCE_PASSPOINT)
+                    setVenueInfoUrl(Uri.parse("https://venue.example.com/passpoint"),
+                            CaptivePortalData.CAPTIVE_PORTAL_DATA_SOURCE_PASSPOINT)
+                }
+            }
+            .build()
+
+    private fun makeBuilder() = CaptivePortalData.Builder(data)
+
+    @Test
+    fun testParcelUnparcel() {
+        val fieldCount = if (SdkLevel.isAtLeastS()) 10 else 7
+        assertParcelSane(data, fieldCount)
+        assertParcelSane(dataFromPasspoint, fieldCount)
+
+        assertParcelingIsLossless(makeBuilder().setUserPortalUrl(null).build())
+        assertParcelingIsLossless(makeBuilder().setVenueInfoUrl(null).build())
+    }
+
+    @Test
+    fun testEquals() {
+        assertEquals(data, makeBuilder().build())
+
+        assertNotEqualsAfterChange { it.setRefreshTime(456L) }
+        assertNotEqualsAfterChange { it.setUserPortalUrl(Uri.parse("https://example.com/")) }
+        assertNotEqualsAfterChange { it.setUserPortalUrl(null) }
+        assertNotEqualsAfterChange { it.setVenueInfoUrl(Uri.parse("https://example.com/")) }
+        assertNotEqualsAfterChange { it.setVenueInfoUrl(null) }
+        assertNotEqualsAfterChange { it.setSessionExtendable(false) }
+        assertNotEqualsAfterChange { it.setBytesRemaining(789L) }
+        assertNotEqualsAfterChange { it.setExpiryTime(12L) }
+        assertNotEqualsAfterChange { it.setCaptive(false) }
+
+        if (SdkLevel.isAtLeastS()) {
+            assertNotEqualsAfterChange { it.setVenueFriendlyName("another friendly name") }
+            assertNotEqualsAfterChange { it.setVenueFriendlyName(null) }
+
+            assertEquals(dataFromPasspoint, CaptivePortalData.Builder(dataFromPasspoint).build())
+            assertNotEqualsAfterChange { it.setUserPortalUrl(
+                    Uri.parse("https://tc.example.com/passpoint")) }
+            assertNotEqualsAfterChange { it.setUserPortalUrl(
+                    Uri.parse("https://tc.example.com/passpoint"),
+                    CaptivePortalData.CAPTIVE_PORTAL_DATA_SOURCE_OTHER) }
+            assertNotEqualsAfterChange { it.setUserPortalUrl(
+                    Uri.parse("https://tc.example.com/other"),
+                    CaptivePortalData.CAPTIVE_PORTAL_DATA_SOURCE_PASSPOINT) }
+            assertNotEqualsAfterChange { it.setUserPortalUrl(
+                    Uri.parse("https://tc.example.com/passpoint"),
+                    CaptivePortalData.CAPTIVE_PORTAL_DATA_SOURCE_OTHER) }
+            assertNotEqualsAfterChange { it.setVenueInfoUrl(
+                    Uri.parse("https://venue.example.com/passpoint")) }
+            assertNotEqualsAfterChange { it.setVenueInfoUrl(
+                    Uri.parse("https://venue.example.com/other"),
+                    CaptivePortalData.CAPTIVE_PORTAL_DATA_SOURCE_PASSPOINT) }
+            assertNotEqualsAfterChange { it.setVenueInfoUrl(
+                    Uri.parse("https://venue.example.com/passpoint"),
+                    CaptivePortalData.CAPTIVE_PORTAL_DATA_SOURCE_OTHER) }
+        }
+    }
+
+    @Test
+    fun testUserPortalUrl() {
+        assertEquals(Uri.parse("https://portal.example.com/test"), data.userPortalUrl)
+    }
+
+    @Test
+    fun testVenueInfoUrl() {
+        assertEquals(Uri.parse("https://venue.example.com/test"), data.venueInfoUrl)
+    }
+
+    @Test
+    fun testIsSessionExtendable() {
+        assertTrue(data.isSessionExtendable)
+    }
+
+    @Test
+    fun testByteLimit() {
+        assertEquals(456L, data.byteLimit)
+        // Test byteLimit unset.
+        assertEquals(-1L, CaptivePortalData.Builder(null).build().byteLimit)
+    }
+
+    @Test
+    fun testRefreshTimeMillis() {
+        assertEquals(123L, data.refreshTimeMillis)
+    }
+
+    @Test
+    fun testExpiryTimeMillis() {
+        assertEquals(789L, data.expiryTimeMillis)
+        // Test expiryTimeMillis unset.
+        assertEquals(-1L, CaptivePortalData.Builder(null).build().expiryTimeMillis)
+    }
+
+    @Test
+    fun testIsCaptive() {
+        assertTrue(data.isCaptive)
+        assertFalse(makeBuilder().setCaptive(false).build().isCaptive)
+    }
+
+    @Test @IgnoreUpTo(Build.VERSION_CODES.R)
+    fun testVenueFriendlyName() {
+        assertEquals("venue friendly name", data.venueFriendlyName)
+    }
+
+    @Test @IgnoreUpTo(Build.VERSION_CODES.R)
+    fun testGetVenueInfoUrlSource() {
+        assertEquals(CaptivePortalData.CAPTIVE_PORTAL_DATA_SOURCE_OTHER,
+                data.venueInfoUrlSource)
+        assertEquals(CaptivePortalData.CAPTIVE_PORTAL_DATA_SOURCE_PASSPOINT,
+                dataFromPasspoint.venueInfoUrlSource)
+    }
+
+    @Test @IgnoreUpTo(Build.VERSION_CODES.R)
+    fun testGetUserPortalUrlSource() {
+        assertEquals(CaptivePortalData.CAPTIVE_PORTAL_DATA_SOURCE_OTHER,
+                data.userPortalUrlSource)
+        assertEquals(CaptivePortalData.CAPTIVE_PORTAL_DATA_SOURCE_PASSPOINT,
+                dataFromPasspoint.userPortalUrlSource)
+    }
+
+    private fun CaptivePortalData.mutate(mutator: (CaptivePortalData.Builder) -> Unit) =
+            CaptivePortalData.Builder(this).apply { mutator(this) }.build()
+
+    private fun assertNotEqualsAfterChange(mutator: (CaptivePortalData.Builder) -> Unit) {
+        assertNotEquals(data, data.mutate(mutator))
+    }
+}
\ No newline at end of file
diff --git a/tests/common/java/android/net/CaptivePortalTest.java b/tests/common/java/android/net/CaptivePortalTest.java
new file mode 100644
index 0000000..15d3398
--- /dev/null
+++ b/tests/common/java/android/net/CaptivePortalTest.java
@@ -0,0 +1,121 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.net;
+
+import static org.junit.Assert.assertEquals;
+
+import android.os.Build;
+import android.os.RemoteException;
+
+import androidx.test.filters.SmallTest;
+import androidx.test.runner.AndroidJUnit4;
+
+import com.android.testutils.DevSdkIgnoreRule;
+import com.android.testutils.DevSdkIgnoreRule.IgnoreAfter;
+import com.android.testutils.DevSdkIgnoreRule.IgnoreUpTo;
+
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+@RunWith(AndroidJUnit4.class)
+@SmallTest
+public class CaptivePortalTest {
+    @Rule
+    public final DevSdkIgnoreRule ignoreRule = new DevSdkIgnoreRule();
+
+    private static final int DEFAULT_TIMEOUT_MS = 5000;
+    private static final String TEST_PACKAGE_NAME = "com.google.android.test";
+
+    private final class MyCaptivePortalImpl extends ICaptivePortal.Stub {
+        int mCode = -1;
+        String mPackageName = null;
+
+        @Override
+        public void appResponse(final int response) throws RemoteException {
+            mCode = response;
+        }
+
+        @Override
+        public void appRequest(final int request) throws RemoteException {
+            mCode = request;
+        }
+
+        // This is only @Override on R-
+        public void logEvent(int eventId, String packageName) throws RemoteException {
+            mCode = eventId;
+            mPackageName = packageName;
+        }
+    }
+
+    private interface TestFunctor {
+        void useCaptivePortal(CaptivePortal o);
+    }
+
+    private MyCaptivePortalImpl runCaptivePortalTest(TestFunctor f) {
+        final MyCaptivePortalImpl cp = new MyCaptivePortalImpl();
+        f.useCaptivePortal(new CaptivePortal(cp.asBinder()));
+        return cp;
+    }
+
+    @Test
+    public void testReportCaptivePortalDismissed() {
+        final MyCaptivePortalImpl result =
+                runCaptivePortalTest(c -> c.reportCaptivePortalDismissed());
+        assertEquals(result.mCode, CaptivePortal.APP_RETURN_DISMISSED);
+    }
+
+    @Test
+    public void testIgnoreNetwork() {
+        final MyCaptivePortalImpl result = runCaptivePortalTest(c -> c.ignoreNetwork());
+        assertEquals(result.mCode, CaptivePortal.APP_RETURN_UNWANTED);
+    }
+
+    @Test
+    public void testUseNetwork() {
+        final MyCaptivePortalImpl result = runCaptivePortalTest(c -> c.useNetwork());
+        assertEquals(result.mCode, CaptivePortal.APP_RETURN_WANTED_AS_IS);
+    }
+
+    @IgnoreUpTo(Build.VERSION_CODES.Q)
+    @Test
+    public void testReevaluateNetwork() {
+        final MyCaptivePortalImpl result = runCaptivePortalTest(c -> c.reevaluateNetwork());
+        assertEquals(result.mCode, CaptivePortal.APP_REQUEST_REEVALUATION_REQUIRED);
+    }
+
+    @IgnoreUpTo(Build.VERSION_CODES.R)
+    @Test
+    public void testLogEvent() {
+        /**
+        * From S testLogEvent is expected to do nothing but shouldn't crash (the API
+        * logEvent has been deprecated).
+        */
+        final MyCaptivePortalImpl result = runCaptivePortalTest(c -> c.logEvent(
+                0,
+                TEST_PACKAGE_NAME));
+    }
+
+    @IgnoreAfter(Build.VERSION_CODES.R)
+    @Test
+    public void testLogEvent_UntilR() {
+        final MyCaptivePortalImpl result = runCaptivePortalTest(c -> c.logEvent(
+                42, TEST_PACKAGE_NAME));
+        assertEquals(result.mCode, 42);
+        assertEquals(result.mPackageName, TEST_PACKAGE_NAME);
+    }
+}
diff --git a/tests/common/java/android/net/DependenciesTest.java b/tests/common/java/android/net/DependenciesTest.java
new file mode 100644
index 0000000..ac1c28a
--- /dev/null
+++ b/tests/common/java/android/net/DependenciesTest.java
@@ -0,0 +1,113 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.net;
+
+import static org.junit.Assert.assertArrayEquals;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+
+import androidx.test.filters.SmallTest;
+import androidx.test.runner.AndroidJUnit4;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.concurrent.TimeUnit;
+
+/**
+ * A simple class that tests dependencies to java standard tools from the
+ * Network stack. These tests are not meant to be comprehensive tests of
+ * the relevant APIs : such tests belong in the relevant test suite for
+ * these dependencies. Instead, this just makes sure coverage is present
+ * by calling the methods in the exact way (or a representative way of how)
+ * they are called in the network stack.
+ */
+@RunWith(AndroidJUnit4.class)
+@SmallTest
+public class DependenciesTest {
+    // Used to in ipmemorystore's RegularMaintenanceJobService to convert
+    // 24 hours into seconds
+    @Test
+    public void testTimeUnit() {
+        final int hours = 24;
+        final long inSeconds = TimeUnit.HOURS.toMillis(hours);
+        assertEquals(inSeconds, hours * 60 * 60 * 1000);
+    }
+
+    private byte[] makeTrivialArray(final int size) {
+        final byte[] src = new byte[size];
+        for (int i = 0; i < size; ++i) {
+            src[i] = (byte) i;
+        }
+        return src;
+    }
+
+    // Used in ApfFilter to find an IP address from a byte array
+    @Test
+    public void testArrays() {
+        final int size = 128;
+        final byte[] src = makeTrivialArray(size);
+
+        // Test copy
+        final int copySize = 16;
+        final int offset = 24;
+        final byte[] expected = new byte[copySize];
+        for (int i = 0; i < copySize; ++i) {
+            expected[i] = (byte) (offset + i);
+        }
+
+        final byte[] copy = Arrays.copyOfRange(src, offset, offset + copySize);
+        assertArrayEquals(expected, copy);
+        assertArrayEquals(new byte[0], Arrays.copyOfRange(src, size, size));
+    }
+
+    // Used mainly in the Dhcp code
+    @Test
+    public void testCopyOf() {
+        final byte[] src = makeTrivialArray(128);
+        final byte[] copy = Arrays.copyOf(src, src.length);
+        assertArrayEquals(src, copy);
+        assertFalse(src == copy);
+
+        assertArrayEquals(new byte[0], Arrays.copyOf(src, 0));
+
+        final int excess = 16;
+        final byte[] biggerCopy = Arrays.copyOf(src, src.length + excess);
+        for (int i = src.length; i < src.length + excess; ++i) {
+            assertEquals(0, biggerCopy[i]);
+        }
+        for (int i = src.length - 1; i >= 0; --i) {
+            assertEquals(src[i], biggerCopy[i]);
+        }
+    }
+
+    // Used mainly in DnsUtils but also various other places
+    @Test
+    public void testAsList() {
+        final int size = 24;
+        final Object[] src = new Object[size];
+        final ArrayList<Object> expected = new ArrayList<>(size);
+        for (int i = 0; i < size; ++i) {
+            final Object o = new Object();
+            src[i] = o;
+            expected.add(o);
+        }
+        assertEquals(expected, Arrays.asList(src));
+    }
+}
diff --git a/tests/common/java/android/net/DhcpInfoTest.java b/tests/common/java/android/net/DhcpInfoTest.java
new file mode 100644
index 0000000..ab4726b
--- /dev/null
+++ b/tests/common/java/android/net/DhcpInfoTest.java
@@ -0,0 +1,112 @@
+/*
+ * Copyright (C) 2009 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.net;
+
+import static com.android.net.module.util.Inet4AddressUtils.inet4AddressToIntHTL;
+import static com.android.testutils.MiscAsserts.assertFieldCountEquals;
+import static com.android.testutils.ParcelUtils.parcelingRoundTrip;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+
+import android.annotation.Nullable;
+
+import androidx.test.runner.AndroidJUnit4;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import java.net.Inet4Address;
+import java.net.InetAddress;
+
+@RunWith(AndroidJUnit4.class)
+public class DhcpInfoTest {
+    private static final String STR_ADDR1 = "255.255.255.255";
+    private static final String STR_ADDR2 = "127.0.0.1";
+    private static final String STR_ADDR3 = "192.168.1.1";
+    private static final String STR_ADDR4 = "192.168.1.0";
+    private static final int LEASE_TIME = 9999;
+
+    private int ipToInteger(String ipString) throws Exception {
+        return inet4AddressToIntHTL((Inet4Address) InetAddress.getByName(ipString));
+    }
+
+    private DhcpInfo createDhcpInfoObject() throws Exception {
+        final DhcpInfo dhcpInfo = new DhcpInfo();
+        dhcpInfo.ipAddress = ipToInteger(STR_ADDR1);
+        dhcpInfo.gateway = ipToInteger(STR_ADDR2);
+        dhcpInfo.netmask = ipToInteger(STR_ADDR3);
+        dhcpInfo.dns1 = ipToInteger(STR_ADDR4);
+        dhcpInfo.dns2 = ipToInteger(STR_ADDR4);
+        dhcpInfo.serverAddress = ipToInteger(STR_ADDR2);
+        dhcpInfo.leaseDuration = LEASE_TIME;
+        return dhcpInfo;
+    }
+
+    @Test
+    public void testConstructor() {
+        new DhcpInfo();
+    }
+
+    @Test
+    public void testToString() throws Exception {
+        final String expectedDefault = "ipaddr 0.0.0.0 gateway 0.0.0.0 netmask 0.0.0.0 "
+                + "dns1 0.0.0.0 dns2 0.0.0.0 DHCP server 0.0.0.0 lease 0 seconds";
+
+        DhcpInfo dhcpInfo = new DhcpInfo();
+
+        // Test default string.
+        assertEquals(expectedDefault, dhcpInfo.toString());
+
+        dhcpInfo = createDhcpInfoObject();
+
+        final String expected = "ipaddr " + STR_ADDR1 + " gateway " + STR_ADDR2 + " netmask "
+                + STR_ADDR3 + " dns1 " + STR_ADDR4 + " dns2 " + STR_ADDR4 + " DHCP server "
+                + STR_ADDR2 + " lease " + LEASE_TIME + " seconds";
+        // Test with new values
+        assertEquals(expected, dhcpInfo.toString());
+    }
+
+    private boolean dhcpInfoEquals(@Nullable DhcpInfo left, @Nullable DhcpInfo right) {
+        if (left == null && right == null) return true;
+
+        if (left == null || right == null) return false;
+
+        return left.ipAddress == right.ipAddress
+                && left.gateway == right.gateway
+                && left.netmask == right.netmask
+                && left.dns1 == right.dns1
+                && left.dns2 == right.dns2
+                && left.serverAddress == right.serverAddress
+                && left.leaseDuration == right.leaseDuration;
+    }
+
+    @Test
+    public void testParcelDhcpInfo() throws Exception {
+        // Cannot use assertParcelSane() here because this requires .equals() to work as
+        // defined, but DhcpInfo has a different legacy behavior that we cannot change.
+        final DhcpInfo dhcpInfo = createDhcpInfoObject();
+        assertFieldCountEquals(7, DhcpInfo.class);
+
+        final DhcpInfo dhcpInfoRoundTrip = parcelingRoundTrip(dhcpInfo);
+        assertTrue(dhcpInfoEquals(null, null));
+        assertFalse(dhcpInfoEquals(null, dhcpInfoRoundTrip));
+        assertFalse(dhcpInfoEquals(dhcpInfo, null));
+        assertTrue(dhcpInfoEquals(dhcpInfo, dhcpInfoRoundTrip));
+    }
+}
diff --git a/tests/common/java/android/net/IpPrefixTest.java b/tests/common/java/android/net/IpPrefixTest.java
new file mode 100644
index 0000000..50ecb42
--- /dev/null
+++ b/tests/common/java/android/net/IpPrefixTest.java
@@ -0,0 +1,374 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.net;
+
+import static com.android.testutils.MiscAsserts.assertEqualBothWays;
+import static com.android.testutils.MiscAsserts.assertFieldCountEquals;
+import static com.android.testutils.MiscAsserts.assertNotEqualEitherWay;
+import static com.android.testutils.ParcelUtils.assertParcelingIsLossless;
+
+import static org.junit.Assert.assertArrayEquals;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertNotEquals;
+import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.fail;
+
+import androidx.test.filters.SmallTest;
+import androidx.test.runner.AndroidJUnit4;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import java.net.InetAddress;
+import java.util.Random;
+
+@RunWith(AndroidJUnit4.class)
+@SmallTest
+public class IpPrefixTest {
+
+    private static InetAddress address(String addr) {
+        return InetAddress.parseNumericAddress(addr);
+    }
+
+    // Explicitly cast everything to byte because "error: possible loss of precision".
+    private static final byte[] IPV4_BYTES = { (byte) 192, (byte) 0, (byte) 2, (byte) 4};
+    private static final byte[] IPV6_BYTES = {
+        (byte) 0x20, (byte) 0x01, (byte) 0x0d, (byte) 0xb8,
+        (byte) 0xde, (byte) 0xad, (byte) 0xbe, (byte) 0xef,
+        (byte) 0x0f, (byte) 0x00, (byte) 0x00, (byte) 0x00,
+        (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0xa0
+    };
+
+    @Test
+    public void testConstructor() {
+        IpPrefix p;
+        try {
+            p = new IpPrefix((byte[]) null, 9);
+            fail("Expected NullPointerException: null byte array");
+        } catch (RuntimeException expected) { }
+
+        try {
+            p = new IpPrefix((InetAddress) null, 10);
+            fail("Expected NullPointerException: null InetAddress");
+        } catch (RuntimeException expected) { }
+
+        try {
+            p = new IpPrefix((String) null);
+            fail("Expected NullPointerException: null String");
+        } catch (RuntimeException expected) { }
+
+
+        try {
+            byte[] b2 = {1, 2, 3, 4, 5};
+            p = new IpPrefix(b2, 29);
+            fail("Expected IllegalArgumentException: invalid array length");
+        } catch (IllegalArgumentException expected) { }
+
+        try {
+            p = new IpPrefix("1.2.3.4");
+            fail("Expected IllegalArgumentException: no prefix length");
+        } catch (IllegalArgumentException expected) { }
+
+        try {
+            p = new IpPrefix("1.2.3.4/");
+            fail("Expected IllegalArgumentException: empty prefix length");
+        } catch (IllegalArgumentException expected) { }
+
+        try {
+            p = new IpPrefix("foo/32");
+            fail("Expected IllegalArgumentException: invalid address");
+        } catch (IllegalArgumentException expected) { }
+
+        try {
+            p = new IpPrefix("1/32");
+            fail("Expected IllegalArgumentException: deprecated IPv4 format");
+        } catch (IllegalArgumentException expected) { }
+
+        try {
+            p = new IpPrefix("1.2.3.256/32");
+            fail("Expected IllegalArgumentException: invalid IPv4 address");
+        } catch (IllegalArgumentException expected) { }
+
+        try {
+            p = new IpPrefix("foo/32");
+            fail("Expected IllegalArgumentException: non-address");
+        } catch (IllegalArgumentException expected) { }
+
+        try {
+            p = new IpPrefix("f00:::/32");
+            fail("Expected IllegalArgumentException: invalid IPv6 address");
+        } catch (IllegalArgumentException expected) { }
+
+        p = new IpPrefix("/64");
+        assertEquals("::/64", p.toString());
+
+        p = new IpPrefix("/128");
+        assertEquals("::1/128", p.toString());
+
+        p = new IpPrefix("[2001:db8::123]/64");
+        assertEquals("2001:db8::/64", p.toString());
+    }
+
+    @Test
+    public void testTruncation() {
+        IpPrefix p;
+
+        p = new IpPrefix(IPV4_BYTES, 32);
+        assertEquals("192.0.2.4/32", p.toString());
+
+        p = new IpPrefix(IPV4_BYTES, 29);
+        assertEquals("192.0.2.0/29", p.toString());
+
+        p = new IpPrefix(IPV4_BYTES, 8);
+        assertEquals("192.0.0.0/8", p.toString());
+
+        p = new IpPrefix(IPV4_BYTES, 0);
+        assertEquals("0.0.0.0/0", p.toString());
+
+        try {
+            p = new IpPrefix(IPV4_BYTES, 33);
+            fail("Expected IllegalArgumentException: invalid prefix length");
+        } catch (RuntimeException expected) { }
+
+        try {
+            p = new IpPrefix(IPV4_BYTES, 128);
+            fail("Expected IllegalArgumentException: invalid prefix length");
+        } catch (RuntimeException expected) { }
+
+        try {
+            p = new IpPrefix(IPV4_BYTES, -1);
+            fail("Expected IllegalArgumentException: negative prefix length");
+        } catch (RuntimeException expected) { }
+
+        p = new IpPrefix(IPV6_BYTES, 128);
+        assertEquals("2001:db8:dead:beef:f00::a0/128", p.toString());
+
+        p = new IpPrefix(IPV6_BYTES, 122);
+        assertEquals("2001:db8:dead:beef:f00::80/122", p.toString());
+
+        p = new IpPrefix(IPV6_BYTES, 64);
+        assertEquals("2001:db8:dead:beef::/64", p.toString());
+
+        p = new IpPrefix(IPV6_BYTES, 3);
+        assertEquals("2000::/3", p.toString());
+
+        p = new IpPrefix(IPV6_BYTES, 0);
+        assertEquals("::/0", p.toString());
+
+        try {
+            p = new IpPrefix(IPV6_BYTES, -1);
+            fail("Expected IllegalArgumentException: negative prefix length");
+        } catch (RuntimeException expected) { }
+
+        try {
+            p = new IpPrefix(IPV6_BYTES, 129);
+            fail("Expected IllegalArgumentException: negative prefix length");
+        } catch (RuntimeException expected) { }
+
+    }
+
+    @Test
+    public void testEquals() {
+        IpPrefix p1, p2;
+
+        p1 = new IpPrefix("192.0.2.251/23");
+        p2 = new IpPrefix(new byte[]{(byte) 192, (byte) 0, (byte) 2, (byte) 251}, 23);
+        assertEqualBothWays(p1, p2);
+
+        p1 = new IpPrefix("192.0.2.5/23");
+        assertEqualBothWays(p1, p2);
+
+        p1 = new IpPrefix("192.0.2.5/24");
+        assertNotEqualEitherWay(p1, p2);
+
+        p1 = new IpPrefix("192.0.4.5/23");
+        assertNotEqualEitherWay(p1, p2);
+
+
+        p1 = new IpPrefix("2001:db8:dead:beef:f00::80/122");
+        p2 = new IpPrefix(IPV6_BYTES, 122);
+        assertEquals("2001:db8:dead:beef:f00::80/122", p2.toString());
+        assertEqualBothWays(p1, p2);
+
+        p1 = new IpPrefix("2001:db8:dead:beef:f00::bf/122");
+        assertEqualBothWays(p1, p2);
+
+        p1 = new IpPrefix("2001:db8:dead:beef:f00::8:0/123");
+        assertNotEqualEitherWay(p1, p2);
+
+        p1 = new IpPrefix("2001:db8:dead:beef::/122");
+        assertNotEqualEitherWay(p1, p2);
+
+        // 192.0.2.4/32 != c000:0204::/32.
+        byte[] ipv6bytes = new byte[16];
+        System.arraycopy(IPV4_BYTES, 0, ipv6bytes, 0, IPV4_BYTES.length);
+        p1 = new IpPrefix(ipv6bytes, 32);
+        assertEqualBothWays(p1, new IpPrefix("c000:0204::/32"));
+
+        p2 = new IpPrefix(IPV4_BYTES, 32);
+        assertNotEqualEitherWay(p1, p2);
+    }
+
+    @Test
+    public void testContainsInetAddress() {
+        IpPrefix p = new IpPrefix("2001:db8:f00::ace:d00d/127");
+        assertTrue(p.contains(address("2001:db8:f00::ace:d00c")));
+        assertTrue(p.contains(address("2001:db8:f00::ace:d00d")));
+        assertFalse(p.contains(address("2001:db8:f00::ace:d00e")));
+        assertFalse(p.contains(address("2001:db8:f00::bad:d00d")));
+        assertFalse(p.contains(address("2001:4868:4860::8888")));
+        assertFalse(p.contains(address("8.8.8.8")));
+
+        p = new IpPrefix("192.0.2.0/23");
+        assertTrue(p.contains(address("192.0.2.43")));
+        assertTrue(p.contains(address("192.0.3.21")));
+        assertFalse(p.contains(address("192.0.0.21")));
+        assertFalse(p.contains(address("8.8.8.8")));
+        assertFalse(p.contains(address("2001:4868:4860::8888")));
+
+        IpPrefix ipv6Default = new IpPrefix("::/0");
+        assertTrue(ipv6Default.contains(address("2001:db8::f00")));
+        assertFalse(ipv6Default.contains(address("192.0.2.1")));
+
+        IpPrefix ipv4Default = new IpPrefix("0.0.0.0/0");
+        assertTrue(ipv4Default.contains(address("255.255.255.255")));
+        assertTrue(ipv4Default.contains(address("192.0.2.1")));
+        assertFalse(ipv4Default.contains(address("2001:db8::f00")));
+    }
+
+    @Test
+    public void testContainsIpPrefix() {
+        assertTrue(new IpPrefix("0.0.0.0/0").containsPrefix(new IpPrefix("0.0.0.0/0")));
+        assertTrue(new IpPrefix("0.0.0.0/0").containsPrefix(new IpPrefix("1.2.3.4/0")));
+        assertTrue(new IpPrefix("0.0.0.0/0").containsPrefix(new IpPrefix("1.2.3.4/8")));
+        assertTrue(new IpPrefix("0.0.0.0/0").containsPrefix(new IpPrefix("1.2.3.4/24")));
+        assertTrue(new IpPrefix("0.0.0.0/0").containsPrefix(new IpPrefix("1.2.3.4/23")));
+
+        assertTrue(new IpPrefix("1.2.3.4/8").containsPrefix(new IpPrefix("1.2.3.4/8")));
+        assertTrue(new IpPrefix("1.2.3.4/8").containsPrefix(new IpPrefix("1.254.12.9/8")));
+        assertTrue(new IpPrefix("1.2.3.4/21").containsPrefix(new IpPrefix("1.2.3.4/21")));
+        assertTrue(new IpPrefix("1.2.3.4/32").containsPrefix(new IpPrefix("1.2.3.4/32")));
+
+        assertTrue(new IpPrefix("1.2.3.4/20").containsPrefix(new IpPrefix("1.2.3.0/24")));
+
+        assertFalse(new IpPrefix("1.2.3.4/32").containsPrefix(new IpPrefix("1.2.3.5/32")));
+        assertFalse(new IpPrefix("1.2.3.4/8").containsPrefix(new IpPrefix("2.2.3.4/8")));
+        assertFalse(new IpPrefix("0.0.0.0/16").containsPrefix(new IpPrefix("0.0.0.0/15")));
+        assertFalse(new IpPrefix("100.0.0.0/8").containsPrefix(new IpPrefix("99.0.0.0/8")));
+
+        assertTrue(new IpPrefix("::/0").containsPrefix(new IpPrefix("::/0")));
+        assertTrue(new IpPrefix("::/0").containsPrefix(new IpPrefix("2001:db8::f00/1")));
+        assertTrue(new IpPrefix("::/0").containsPrefix(new IpPrefix("3d8a:661:a0::770/8")));
+        assertTrue(new IpPrefix("::/0").containsPrefix(new IpPrefix("2001:db8::f00/8")));
+        assertTrue(new IpPrefix("::/0").containsPrefix(new IpPrefix("2001:db8::f00/64")));
+        assertTrue(new IpPrefix("::/0").containsPrefix(new IpPrefix("2001:db8::f00/113")));
+        assertTrue(new IpPrefix("::/0").containsPrefix(new IpPrefix("2001:db8::f00/128")));
+
+        assertTrue(new IpPrefix("2001:db8:f00::ace:d00d/64").containsPrefix(
+                new IpPrefix("2001:db8:f00::ace:d00d/64")));
+        assertTrue(new IpPrefix("2001:db8:f00::ace:d00d/64").containsPrefix(
+                new IpPrefix("2001:db8:f00::ace:d00d/120")));
+        assertFalse(new IpPrefix("2001:db8:f00::ace:d00d/64").containsPrefix(
+                new IpPrefix("2001:db8:f00::ace:d00d/32")));
+        assertFalse(new IpPrefix("2001:db8:f00::ace:d00d/64").containsPrefix(
+                new IpPrefix("2006:db8:f00::ace:d00d/96")));
+
+        assertTrue(new IpPrefix("2001:db8:f00::ace:d00d/128").containsPrefix(
+                new IpPrefix("2001:db8:f00::ace:d00d/128")));
+        assertTrue(new IpPrefix("2001:db8:f00::ace:d00d/100").containsPrefix(
+                new IpPrefix("2001:db8:f00::ace:ccaf/110")));
+
+        assertFalse(new IpPrefix("2001:db8:f00::ace:d00d/128").containsPrefix(
+                new IpPrefix("2001:db8:f00::ace:d00e/128")));
+        assertFalse(new IpPrefix("::/30").containsPrefix(new IpPrefix("::/29")));
+    }
+
+    @Test
+    public void testHashCode() {
+        IpPrefix p = new IpPrefix(new byte[4], 0);
+        Random random = new Random();
+        for (int i = 0; i < 100; i++) {
+            final IpPrefix oldP = p;
+            if (random.nextBoolean()) {
+                // IPv4.
+                byte[] b = new byte[4];
+                random.nextBytes(b);
+                p = new IpPrefix(b, random.nextInt(33));
+            } else {
+                // IPv6.
+                byte[] b = new byte[16];
+                random.nextBytes(b);
+                p = new IpPrefix(b, random.nextInt(129));
+            }
+            if (p.equals(oldP)) {
+                assertEquals(p.hashCode(), oldP.hashCode());
+            }
+            if (p.hashCode() != oldP.hashCode()) {
+                assertNotEquals(p, oldP);
+            }
+        }
+    }
+
+    @Test
+    public void testHashCodeIsNotConstant() {
+        IpPrefix[] prefixes = {
+            new IpPrefix("2001:db8:f00::ace:d00d/127"),
+            new IpPrefix("192.0.2.0/23"),
+            new IpPrefix("::/0"),
+            new IpPrefix("0.0.0.0/0"),
+        };
+        for (int i = 0; i < prefixes.length; i++) {
+            for (int j = i + 1; j < prefixes.length; j++) {
+                assertNotEquals(prefixes[i].hashCode(), prefixes[j].hashCode());
+            }
+        }
+    }
+
+    @Test
+    public void testMappedAddressesAreBroken() {
+        // 192.0.2.0/24 != ::ffff:c000:0204/120, but because we use InetAddress,
+        // we are unable to comprehend that.
+        byte[] ipv6bytes = {
+            (byte) 0, (byte) 0, (byte) 0, (byte) 0,
+            (byte) 0, (byte) 0, (byte) 0, (byte) 0,
+            (byte) 0, (byte) 0, (byte) 0xff, (byte) 0xff,
+            (byte) 192, (byte) 0, (byte) 2, (byte) 0};
+        IpPrefix p = new IpPrefix(ipv6bytes, 120);
+        assertEquals(16, p.getRawAddress().length);       // Fine.
+        assertArrayEquals(ipv6bytes, p.getRawAddress());  // Fine.
+
+        // Broken.
+        assertEquals("192.0.2.0/120", p.toString());
+        assertEquals(InetAddress.parseNumericAddress("192.0.2.0"), p.getAddress());
+    }
+
+    @Test
+    public void testParceling() {
+        IpPrefix p;
+
+        p = new IpPrefix("2001:4860:db8::/64");
+        assertParcelingIsLossless(p);
+        assertTrue(p.isIPv6());
+
+        p = new IpPrefix("192.0.2.0/25");
+        assertParcelingIsLossless(p);
+        assertTrue(p.isIPv4());
+
+        assertFieldCountEquals(2, IpPrefix.class);
+    }
+}
diff --git a/tests/common/java/android/net/KeepalivePacketDataTest.kt b/tests/common/java/android/net/KeepalivePacketDataTest.kt
new file mode 100644
index 0000000..f464ec6
--- /dev/null
+++ b/tests/common/java/android/net/KeepalivePacketDataTest.kt
@@ -0,0 +1,120 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package android.net
+
+import android.net.InvalidPacketException.ERROR_INVALID_IP_ADDRESS
+import android.net.InvalidPacketException.ERROR_INVALID_PORT
+import android.os.Build
+import androidx.test.filters.SmallTest
+import androidx.test.runner.AndroidJUnit4
+import com.android.testutils.DevSdkIgnoreRule
+import com.android.testutils.DevSdkIgnoreRule.IgnoreUpTo
+import java.net.InetAddress
+import java.util.Arrays
+import org.junit.Assert.assertEquals
+import org.junit.Assert.assertTrue
+import org.junit.Assert.fail
+import org.junit.Rule
+import org.junit.Test
+import org.junit.runner.RunWith
+
+@RunWith(AndroidJUnit4::class)
+@SmallTest
+class KeepalivePacketDataTest {
+    @Rule @JvmField
+    val ignoreRule: DevSdkIgnoreRule = DevSdkIgnoreRule()
+
+    private val INVALID_PORT = 65537
+    private val TEST_DST_PORT = 4244
+    private val TEST_SRC_PORT = 4243
+
+    private val TESTBYTES = byteArrayOf(12, 31, 22, 44)
+    private val TEST_SRC_ADDRV4 = "198.168.0.2".address()
+    private val TEST_DST_ADDRV4 = "198.168.0.1".address()
+    private val TEST_ADDRV6 = "2001:db8::1".address()
+
+    private fun String.address() = InetAddresses.parseNumericAddress(this)
+
+    // Add for test because constructor of KeepalivePacketData is protected.
+    private inner class TestKeepalivePacketData(
+        srcAddress: InetAddress? = TEST_SRC_ADDRV4,
+        srcPort: Int = TEST_SRC_PORT,
+        dstAddress: InetAddress? = TEST_DST_ADDRV4,
+        dstPort: Int = TEST_DST_PORT,
+        data: ByteArray = TESTBYTES
+    ) : KeepalivePacketData(srcAddress, srcPort, dstAddress, dstPort, data)
+
+    @Test
+    @IgnoreUpTo(Build.VERSION_CODES.Q)
+    fun testConstructor() {
+        var data: TestKeepalivePacketData
+
+        try {
+            data = TestKeepalivePacketData(srcAddress = null)
+            fail("Null src address should cause exception")
+        } catch (e: InvalidPacketException) {
+            assertEquals(e.error, ERROR_INVALID_IP_ADDRESS)
+        }
+
+        try {
+            data = TestKeepalivePacketData(dstAddress = null)
+            fail("Null dst address should cause exception")
+        } catch (e: InvalidPacketException) {
+            assertEquals(e.error, ERROR_INVALID_IP_ADDRESS)
+        }
+
+        try {
+            data = TestKeepalivePacketData(dstAddress = TEST_ADDRV6)
+            fail("Ip family mismatched should cause exception")
+        } catch (e: InvalidPacketException) {
+            assertEquals(e.error, ERROR_INVALID_IP_ADDRESS)
+        }
+
+        try {
+            data = TestKeepalivePacketData(srcPort = INVALID_PORT)
+            fail("Invalid srcPort should cause exception")
+        } catch (e: InvalidPacketException) {
+            assertEquals(e.error, ERROR_INVALID_PORT)
+        }
+
+        try {
+            data = TestKeepalivePacketData(dstPort = INVALID_PORT)
+            fail("Invalid dstPort should cause exception")
+        } catch (e: InvalidPacketException) {
+            assertEquals(e.error, ERROR_INVALID_PORT)
+        }
+    }
+
+    @Test
+    @IgnoreUpTo(Build.VERSION_CODES.Q)
+    fun testSrcAddress() = assertEquals(TEST_SRC_ADDRV4, TestKeepalivePacketData().srcAddress)
+
+    @Test
+    @IgnoreUpTo(Build.VERSION_CODES.Q)
+    fun testDstAddress() = assertEquals(TEST_DST_ADDRV4, TestKeepalivePacketData().dstAddress)
+
+    @Test
+    @IgnoreUpTo(Build.VERSION_CODES.Q)
+    fun testSrcPort() = assertEquals(TEST_SRC_PORT, TestKeepalivePacketData().srcPort)
+
+    @Test
+    @IgnoreUpTo(Build.VERSION_CODES.Q)
+    fun testDstPort() = assertEquals(TEST_DST_PORT, TestKeepalivePacketData().dstPort)
+
+    @Test
+    @IgnoreUpTo(Build.VERSION_CODES.Q)
+    fun testPacket() = assertTrue(Arrays.equals(TESTBYTES, TestKeepalivePacketData().packet))
+}
\ No newline at end of file
diff --git a/tests/common/java/android/net/LinkAddressTest.java b/tests/common/java/android/net/LinkAddressTest.java
new file mode 100644
index 0000000..2cf3cf9
--- /dev/null
+++ b/tests/common/java/android/net/LinkAddressTest.java
@@ -0,0 +1,518 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.net;
+
+import static android.system.OsConstants.IFA_F_DADFAILED;
+import static android.system.OsConstants.IFA_F_DEPRECATED;
+import static android.system.OsConstants.IFA_F_OPTIMISTIC;
+import static android.system.OsConstants.IFA_F_PERMANENT;
+import static android.system.OsConstants.IFA_F_TEMPORARY;
+import static android.system.OsConstants.IFA_F_TENTATIVE;
+import static android.system.OsConstants.RT_SCOPE_HOST;
+import static android.system.OsConstants.RT_SCOPE_LINK;
+import static android.system.OsConstants.RT_SCOPE_SITE;
+import static android.system.OsConstants.RT_SCOPE_UNIVERSE;
+
+import static com.android.testutils.MiscAsserts.assertEqualBothWays;
+import static com.android.testutils.MiscAsserts.assertFieldCountEquals;
+import static com.android.testutils.MiscAsserts.assertNotEqualEitherWay;
+import static com.android.testutils.ParcelUtils.assertParcelingIsLossless;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertNotEquals;
+import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.fail;
+
+import android.os.Build;
+import android.os.SystemClock;
+
+import androidx.test.filters.SmallTest;
+import androidx.test.runner.AndroidJUnit4;
+
+import com.android.testutils.DevSdkIgnoreRule;
+import com.android.testutils.DevSdkIgnoreRule.IgnoreAfter;
+import com.android.testutils.DevSdkIgnoreRule.IgnoreUpTo;
+
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import java.net.Inet4Address;
+import java.net.Inet6Address;
+import java.net.InetAddress;
+import java.net.InterfaceAddress;
+import java.net.NetworkInterface;
+import java.net.SocketException;
+import java.util.Arrays;
+import java.util.List;
+
+@RunWith(AndroidJUnit4.class)
+@SmallTest
+public class LinkAddressTest {
+    @Rule
+    public final DevSdkIgnoreRule ignoreRule = new DevSdkIgnoreRule();
+
+    private static final String V4 = "192.0.2.1";
+    private static final String V6 = "2001:db8::1";
+    private static final InetAddress V4_ADDRESS = InetAddresses.parseNumericAddress(V4);
+    private static final InetAddress V6_ADDRESS = InetAddresses.parseNumericAddress(V6);
+
+    @Test
+    public void testConstants() {
+        // RT_SCOPE_UNIVERSE = 0, but all the other constants should be nonzero.
+        assertNotEquals(0, RT_SCOPE_HOST);
+        assertNotEquals(0, RT_SCOPE_LINK);
+        assertNotEquals(0, RT_SCOPE_SITE);
+
+        assertNotEquals(0, IFA_F_DEPRECATED);
+        assertNotEquals(0, IFA_F_PERMANENT);
+        assertNotEquals(0, IFA_F_TENTATIVE);
+    }
+
+    @Test
+    public void testConstructors() throws SocketException {
+        LinkAddress address;
+
+        // Valid addresses work as expected.
+        address = new LinkAddress(V4_ADDRESS, 25);
+        assertEquals(V4_ADDRESS, address.getAddress());
+        assertEquals(25, address.getPrefixLength());
+        assertEquals(0, address.getFlags());
+        assertEquals(RT_SCOPE_UNIVERSE, address.getScope());
+        assertTrue(address.isIpv4());
+
+        address = new LinkAddress(V6_ADDRESS, 127);
+        assertEquals(V6_ADDRESS, address.getAddress());
+        assertEquals(127, address.getPrefixLength());
+        assertEquals(0, address.getFlags());
+        assertEquals(RT_SCOPE_UNIVERSE, address.getScope());
+        assertTrue(address.isIpv6());
+
+        // Nonsensical flags/scopes or combinations thereof are acceptable.
+        address = new LinkAddress(V6 + "/64", IFA_F_DEPRECATED | IFA_F_PERMANENT, RT_SCOPE_LINK);
+        assertEquals(V6_ADDRESS, address.getAddress());
+        assertEquals(64, address.getPrefixLength());
+        assertEquals(IFA_F_DEPRECATED | IFA_F_PERMANENT, address.getFlags());
+        assertEquals(RT_SCOPE_LINK, address.getScope());
+        assertTrue(address.isIpv6());
+
+        address = new LinkAddress(V4 + "/23", 123, 456);
+        assertEquals(V4_ADDRESS, address.getAddress());
+        assertEquals(23, address.getPrefixLength());
+        assertEquals(123, address.getFlags());
+        assertEquals(456, address.getScope());
+        assertTrue(address.isIpv4());
+
+        address = new LinkAddress("/64", 1 /* flags */, 2 /* scope */);
+        assertEquals(Inet6Address.LOOPBACK, address.getAddress());
+        assertEquals(64, address.getPrefixLength());
+        assertEquals(1, address.getFlags());
+        assertEquals(2, address.getScope());
+        assertTrue(address.isIpv6());
+
+        address = new LinkAddress("[2001:db8::123]/64", 3 /* flags */, 4 /* scope */);
+        assertEquals(InetAddresses.parseNumericAddress("2001:db8::123"), address.getAddress());
+        assertEquals(64, address.getPrefixLength());
+        assertEquals(3, address.getFlags());
+        assertEquals(4, address.getScope());
+        assertTrue(address.isIpv6());
+
+        // InterfaceAddress doesn't have a constructor. Fetch some from an interface.
+        List<InterfaceAddress> addrs = NetworkInterface.getByName("lo").getInterfaceAddresses();
+
+        // We expect to find 127.0.0.1/8 and ::1/128, in any order.
+        LinkAddress ipv4Loopback, ipv6Loopback;
+        assertEquals(2, addrs.size());
+        if (addrs.get(0).getAddress() instanceof Inet4Address) {
+            ipv4Loopback = new LinkAddress(addrs.get(0));
+            ipv6Loopback = new LinkAddress(addrs.get(1));
+        } else {
+            ipv4Loopback = new LinkAddress(addrs.get(1));
+            ipv6Loopback = new LinkAddress(addrs.get(0));
+        }
+
+        assertEquals(InetAddresses.parseNumericAddress("127.0.0.1"), ipv4Loopback.getAddress());
+        assertEquals(8, ipv4Loopback.getPrefixLength());
+
+        assertEquals(InetAddresses.parseNumericAddress("::1"), ipv6Loopback.getAddress());
+        assertEquals(128, ipv6Loopback.getPrefixLength());
+
+        // Null addresses are rejected.
+        try {
+            address = new LinkAddress(null, 24);
+            fail("Null InetAddress should cause IllegalArgumentException");
+        } catch(IllegalArgumentException expected) {}
+
+        try {
+            address = new LinkAddress((String) null, IFA_F_PERMANENT, RT_SCOPE_UNIVERSE);
+            fail("Null string should cause IllegalArgumentException");
+        } catch(IllegalArgumentException expected) {}
+
+        try {
+            address = new LinkAddress((InterfaceAddress) null);
+            fail("Null string should cause NullPointerException");
+        } catch(NullPointerException expected) {}
+
+        // Invalid prefix lengths are rejected.
+        try {
+            address = new LinkAddress(V4_ADDRESS, -1);
+            fail("Negative IPv4 prefix length should cause IllegalArgumentException");
+        } catch(IllegalArgumentException expected) {}
+
+        try {
+            address = new LinkAddress(V6_ADDRESS, -1);
+            fail("Negative IPv6 prefix length should cause IllegalArgumentException");
+        } catch(IllegalArgumentException expected) {}
+
+        try {
+            address = new LinkAddress(V4_ADDRESS, 33);
+            fail("/33 IPv4 prefix length should cause IllegalArgumentException");
+        } catch(IllegalArgumentException expected) {}
+
+        try {
+            address = new LinkAddress(V4 + "/33", IFA_F_PERMANENT, RT_SCOPE_UNIVERSE);
+            fail("/33 IPv4 prefix length should cause IllegalArgumentException");
+        } catch(IllegalArgumentException expected) {}
+
+
+        try {
+            address = new LinkAddress(V6_ADDRESS, 129, IFA_F_PERMANENT, RT_SCOPE_UNIVERSE);
+            fail("/129 IPv6 prefix length should cause IllegalArgumentException");
+        } catch(IllegalArgumentException expected) {}
+
+        try {
+            address = new LinkAddress(V6 + "/129", IFA_F_PERMANENT, RT_SCOPE_UNIVERSE);
+            fail("/129 IPv6 prefix length should cause IllegalArgumentException");
+        } catch(IllegalArgumentException expected) {}
+
+        // Multicast addresses are rejected.
+        try {
+            address = new LinkAddress("224.0.0.2/32");
+            fail("IPv4 multicast address should cause IllegalArgumentException");
+        } catch(IllegalArgumentException expected) {}
+
+        try {
+            address = new LinkAddress("ff02::1/128");
+            fail("IPv6 multicast address should cause IllegalArgumentException");
+        } catch(IllegalArgumentException expected) {}
+    }
+
+    @Test
+    public void testAddressScopes() {
+        assertEquals(RT_SCOPE_HOST, new LinkAddress("::/128").getScope());
+        assertEquals(RT_SCOPE_HOST, new LinkAddress("0.0.0.0/32").getScope());
+
+        assertEquals(RT_SCOPE_LINK, new LinkAddress("::1/128").getScope());
+        assertEquals(RT_SCOPE_LINK, new LinkAddress("127.0.0.5/8").getScope());
+        assertEquals(RT_SCOPE_LINK, new LinkAddress("fe80::ace:d00d/64").getScope());
+        assertEquals(RT_SCOPE_LINK, new LinkAddress("169.254.5.12/16").getScope());
+
+        assertEquals(RT_SCOPE_SITE, new LinkAddress("fec0::dead/64").getScope());
+
+        assertEquals(RT_SCOPE_UNIVERSE, new LinkAddress("10.1.2.3/21").getScope());
+        assertEquals(RT_SCOPE_UNIVERSE, new LinkAddress("192.0.2.1/25").getScope());
+        assertEquals(RT_SCOPE_UNIVERSE, new LinkAddress("2001:db8::/64").getScope());
+        assertEquals(RT_SCOPE_UNIVERSE, new LinkAddress("5000::/127").getScope());
+    }
+
+    private void assertIsSameAddressAs(LinkAddress l1, LinkAddress l2) {
+        assertTrue(l1 + " unexpectedly does not have same address as " + l2,
+                l1.isSameAddressAs(l2));
+        assertTrue(l2 + " unexpectedly does not have same address as " + l1,
+                l2.isSameAddressAs(l1));
+    }
+
+    private void assertIsNotSameAddressAs(LinkAddress l1, LinkAddress l2) {
+        assertFalse(l1 + " unexpectedly has same address as " + l2,
+                l1.isSameAddressAs(l2));
+        assertFalse(l2 + " unexpectedly has same address as " + l1,
+                l1.isSameAddressAs(l2));
+    }
+
+    @Test
+    public void testEqualsAndSameAddressAs() {
+        LinkAddress l1, l2, l3;
+
+        l1 = new LinkAddress("2001:db8::1/64");
+        l2 = new LinkAddress("2001:db8::1/64");
+        assertEqualBothWays(l1, l2);
+        assertIsSameAddressAs(l1, l2);
+
+        l2 = new LinkAddress("2001:db8::1/65");
+        assertNotEqualEitherWay(l1, l2);
+        assertIsNotSameAddressAs(l1, l2);
+
+        l2 = new LinkAddress("2001:db8::2/64");
+        assertNotEqualEitherWay(l1, l2);
+        assertIsNotSameAddressAs(l1, l2);
+
+
+        l1 = new LinkAddress("192.0.2.1/24");
+        l2 = new LinkAddress("192.0.2.1/24");
+        assertEqualBothWays(l1, l2);
+        assertIsSameAddressAs(l1, l2);
+
+        l2 = new LinkAddress("192.0.2.1/23");
+        assertNotEqualEitherWay(l1, l2);
+        assertIsNotSameAddressAs(l1, l2);
+
+        l2 = new LinkAddress("192.0.2.2/24");
+        assertNotEqualEitherWay(l1, l2);
+        assertIsNotSameAddressAs(l1, l2);
+
+
+        // Check equals() and isSameAddressAs() on identical addresses with different flags.
+        l1 = new LinkAddress(V6_ADDRESS, 64);
+        l2 = new LinkAddress(V6_ADDRESS, 64, 0, RT_SCOPE_UNIVERSE);
+        assertEqualBothWays(l1, l2);
+        assertIsSameAddressAs(l1, l2);
+
+        l2 = new LinkAddress(V6_ADDRESS, 64, IFA_F_DEPRECATED, RT_SCOPE_UNIVERSE);
+        assertNotEqualEitherWay(l1, l2);
+        assertIsSameAddressAs(l1, l2);
+
+        // Check equals() and isSameAddressAs() on identical addresses with different scope.
+        l1 = new LinkAddress(V4_ADDRESS, 24);
+        l2 = new LinkAddress(V4_ADDRESS, 24, 0, RT_SCOPE_UNIVERSE);
+        assertEqualBothWays(l1, l2);
+        assertIsSameAddressAs(l1, l2);
+
+        l2 = new LinkAddress(V4_ADDRESS, 24, 0, RT_SCOPE_HOST);
+        assertNotEqualEitherWay(l1, l2);
+        assertIsSameAddressAs(l1, l2);
+
+        // Addresses with the same start or end bytes aren't equal between families.
+        l1 = new LinkAddress("32.1.13.184/24");
+        l2 = new LinkAddress("2001:db8::1/24");
+        l3 = new LinkAddress("::2001:db8/24");
+
+        byte[] ipv4Bytes = l1.getAddress().getAddress();
+        byte[] l2FirstIPv6Bytes = Arrays.copyOf(l2.getAddress().getAddress(), 4);
+        byte[] l3LastIPv6Bytes = Arrays.copyOfRange(l3.getAddress().getAddress(), 12, 16);
+        assertTrue(Arrays.equals(ipv4Bytes, l2FirstIPv6Bytes));
+        assertTrue(Arrays.equals(ipv4Bytes, l3LastIPv6Bytes));
+
+        assertNotEqualEitherWay(l1, l2);
+        assertIsNotSameAddressAs(l1, l2);
+
+        assertNotEqualEitherWay(l1, l3);
+        assertIsNotSameAddressAs(l1, l3);
+
+        // Because we use InetAddress, an IPv4 address is equal to its IPv4-mapped address.
+        // TODO: Investigate fixing this.
+        String addressString = V4 + "/24";
+        l1 = new LinkAddress(addressString);
+        l2 = new LinkAddress("::ffff:" + addressString);
+        assertEqualBothWays(l1, l2);
+        assertIsSameAddressAs(l1, l2);
+    }
+
+    @Test
+    public void testHashCode() {
+        LinkAddress l1, l2;
+
+        l1 = new LinkAddress(V4_ADDRESS, 23);
+        l2 = new LinkAddress(V4_ADDRESS, 23, 0, RT_SCOPE_HOST);
+        assertNotEquals(l1.hashCode(), l2.hashCode());
+
+        l1 = new LinkAddress(V6_ADDRESS, 128);
+        l2 = new LinkAddress(V6_ADDRESS, 128, IFA_F_TENTATIVE, RT_SCOPE_UNIVERSE);
+        assertNotEquals(l1.hashCode(), l2.hashCode());
+    }
+
+    @Test
+    public void testParceling() {
+        LinkAddress l;
+
+        l = new LinkAddress(V6_ADDRESS, 64, 123, 456);
+        assertParcelingIsLossless(l);
+
+        l = new LinkAddress(V4 + "/28", IFA_F_PERMANENT, RT_SCOPE_LINK);
+        assertParcelingIsLossless(l);
+    }
+
+    @Test @IgnoreUpTo(Build.VERSION_CODES.Q)
+    public void testLifetimeParceling() {
+        final LinkAddress l = new LinkAddress(V6_ADDRESS, 64, 123, 456, 1L, 3600000L);
+        assertParcelingIsLossless(l);
+    }
+
+    @Test @IgnoreAfter(Build.VERSION_CODES.Q)
+    public void testFieldCount_Q() {
+        assertFieldCountEquals(4, LinkAddress.class);
+    }
+
+    @Test @IgnoreUpTo(Build.VERSION_CODES.Q)
+    public void testFieldCount() {
+        // Make sure any new field is covered by the above parceling tests when changing this number
+        assertFieldCountEquals(6, LinkAddress.class);
+    }
+
+    @Test @IgnoreUpTo(Build.VERSION_CODES.Q)
+    public void testDeprecationTime() {
+        try {
+            new LinkAddress(V6_ADDRESS, 64, 0, 456,
+                    LinkAddress.LIFETIME_UNKNOWN, 100000L);
+            fail("Only one time provided should cause exception");
+        } catch (IllegalArgumentException expected) { }
+
+        try {
+            new LinkAddress(V6_ADDRESS, 64, 0, 456,
+                    200000L, 100000L);
+            fail("deprecation time later than expiration time should cause exception");
+        } catch (IllegalArgumentException expected) { }
+
+        try {
+            new LinkAddress(V6_ADDRESS, 64, 0, 456,
+                    -2, 100000L);
+            fail("negative deprecation time should cause exception");
+        } catch (IllegalArgumentException expected) { }
+
+        LinkAddress addr = new LinkAddress(V6_ADDRESS, 64, 0, 456, 100000L, 200000L);
+        assertEquals(100000L, addr.getDeprecationTime());
+    }
+
+    @Test @IgnoreUpTo(Build.VERSION_CODES.Q)
+    public void testExpirationTime() {
+        try {
+            new LinkAddress(V6_ADDRESS, 64, 0, 456,
+                    200000L, LinkAddress.LIFETIME_UNKNOWN);
+            fail("Only one time provided should cause exception");
+        } catch (IllegalArgumentException expected) { }
+
+        try {
+            new LinkAddress(V6_ADDRESS, 64, 0, 456,
+                    100000L, -2);
+            fail("negative expiration time should cause exception");
+        } catch (IllegalArgumentException expected) { }
+
+        LinkAddress addr = new LinkAddress(V6_ADDRESS, 64, 0, 456, 100000L, 200000L);
+        assertEquals(200000L, addr.getExpirationTime());
+    }
+
+    @Test
+    public void testGetFlags() {
+        LinkAddress l = new LinkAddress(V6_ADDRESS, 64, 123, RT_SCOPE_HOST);
+        assertEquals(123, l.getFlags());
+    }
+
+    @Test @IgnoreUpTo(Build.VERSION_CODES.Q)
+    public void testGetFlags_Deprecation() {
+        // Test if deprecated bit was added/remove automatically based on the provided deprecation
+        // time
+        LinkAddress l = new LinkAddress(V6_ADDRESS, 64, 0, RT_SCOPE_HOST,
+                1L, LinkAddress.LIFETIME_PERMANENT);
+        // Check if the flag is added automatically.
+        assertTrue((l.getFlags() & IFA_F_DEPRECATED) != 0);
+
+        l = new LinkAddress(V6_ADDRESS, 64, IFA_F_DEPRECATED, RT_SCOPE_HOST,
+                SystemClock.elapsedRealtime() + 100000L, LinkAddress.LIFETIME_PERMANENT);
+        // Check if the flag is removed automatically.
+        assertTrue((l.getFlags() & IFA_F_DEPRECATED) == 0);
+
+        l = new LinkAddress(V6_ADDRESS, 64, IFA_F_DEPRECATED, RT_SCOPE_HOST,
+                LinkAddress.LIFETIME_PERMANENT, LinkAddress.LIFETIME_PERMANENT);
+        // Check if the permanent flag is added.
+        assertTrue((l.getFlags() & IFA_F_PERMANENT) != 0);
+
+        l = new LinkAddress(V6_ADDRESS, 64, IFA_F_PERMANENT, RT_SCOPE_HOST,
+                1000L, SystemClock.elapsedRealtime() + 100000L);
+        // Check if the permanent flag is removed
+        assertTrue((l.getFlags() & IFA_F_PERMANENT) == 0);
+    }
+
+    private void assertGlobalPreferred(LinkAddress l, String msg) {
+        assertTrue(msg, l.isGlobalPreferred());
+    }
+
+    private void assertNotGlobalPreferred(LinkAddress l, String msg) {
+        assertFalse(msg, l.isGlobalPreferred());
+    }
+
+    @Test
+    public void testIsGlobalPreferred() {
+        LinkAddress l;
+
+        l = new LinkAddress(V4_ADDRESS, 32, 0, RT_SCOPE_UNIVERSE);
+        assertGlobalPreferred(l, "v4,global,noflags");
+
+        l = new LinkAddress("10.10.1.7/23", 0, RT_SCOPE_UNIVERSE);
+        assertGlobalPreferred(l, "v4-rfc1918,global,noflags");
+
+        l = new LinkAddress("10.10.1.7/23", 0, RT_SCOPE_SITE);
+        assertNotGlobalPreferred(l, "v4-rfc1918,site-local,noflags");
+
+        l = new LinkAddress("127.0.0.7/8", 0, RT_SCOPE_HOST);
+        assertNotGlobalPreferred(l, "v4-localhost,node-local,noflags");
+
+        l = new LinkAddress(V6_ADDRESS, 64, 0, RT_SCOPE_UNIVERSE);
+        assertGlobalPreferred(l, "v6,global,noflags");
+
+        l = new LinkAddress(V6_ADDRESS, 64, IFA_F_PERMANENT, RT_SCOPE_UNIVERSE);
+        assertGlobalPreferred(l, "v6,global,permanent");
+
+        // IPv6 ULAs are not acceptable "global preferred" addresses.
+        l = new LinkAddress("fc12::1/64", 0, RT_SCOPE_UNIVERSE);
+        assertNotGlobalPreferred(l, "v6,ula1,noflags");
+
+        l = new LinkAddress("fd34::1/64", 0, RT_SCOPE_UNIVERSE);
+        assertNotGlobalPreferred(l, "v6,ula2,noflags");
+
+        l = new LinkAddress(V6_ADDRESS, 64, IFA_F_TEMPORARY, RT_SCOPE_UNIVERSE);
+        assertGlobalPreferred(l, "v6,global,tempaddr");
+
+        l = new LinkAddress(V6_ADDRESS, 64, (IFA_F_TEMPORARY|IFA_F_DADFAILED),
+                            RT_SCOPE_UNIVERSE);
+        assertNotGlobalPreferred(l, "v6,global,tempaddr+dadfailed");
+
+        l = new LinkAddress(V6_ADDRESS, 64, (IFA_F_TEMPORARY|IFA_F_DEPRECATED),
+                            RT_SCOPE_UNIVERSE);
+        assertNotGlobalPreferred(l, "v6,global,tempaddr+deprecated");
+
+        l = new LinkAddress(V6_ADDRESS, 64, IFA_F_TEMPORARY, RT_SCOPE_SITE);
+        assertNotGlobalPreferred(l, "v6,site-local,tempaddr");
+
+        l = new LinkAddress(V6_ADDRESS, 64, IFA_F_TEMPORARY, RT_SCOPE_LINK);
+        assertNotGlobalPreferred(l, "v6,link-local,tempaddr");
+
+        l = new LinkAddress(V6_ADDRESS, 64, IFA_F_TEMPORARY, RT_SCOPE_HOST);
+        assertNotGlobalPreferred(l, "v6,node-local,tempaddr");
+
+        l = new LinkAddress("::1/128", IFA_F_PERMANENT, RT_SCOPE_HOST);
+        assertNotGlobalPreferred(l, "v6-localhost,node-local,permanent");
+
+        l = new LinkAddress(V6_ADDRESS, 64, (IFA_F_TEMPORARY|IFA_F_TENTATIVE),
+                            RT_SCOPE_UNIVERSE);
+        assertNotGlobalPreferred(l, "v6,global,tempaddr+tentative");
+
+        l = new LinkAddress(V6_ADDRESS, 64,
+                            (IFA_F_TEMPORARY|IFA_F_TENTATIVE|IFA_F_OPTIMISTIC),
+                            RT_SCOPE_UNIVERSE);
+        assertGlobalPreferred(l, "v6,global,tempaddr+optimistic");
+    }
+
+    @Test @IgnoreUpTo(Build.VERSION_CODES.Q)
+    public void testIsGlobalPreferred_DeprecatedInFuture() {
+        final LinkAddress l = new LinkAddress(V6_ADDRESS, 64, IFA_F_DEPRECATED,
+                RT_SCOPE_UNIVERSE, SystemClock.elapsedRealtime() + 100000,
+                SystemClock.elapsedRealtime() + 200000);
+        // Although the deprecated bit is set, but the deprecation time is in the future, test
+        // if the flag is removed automatically.
+        assertGlobalPreferred(l, "v6,global,tempaddr+deprecated in the future");
+    }
+}
diff --git a/tests/common/java/android/net/LinkPropertiesTest.java b/tests/common/java/android/net/LinkPropertiesTest.java
new file mode 100644
index 0000000..550953d
--- /dev/null
+++ b/tests/common/java/android/net/LinkPropertiesTest.java
@@ -0,0 +1,1271 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.net;
+
+import static android.net.RouteInfo.RTN_THROW;
+import static android.net.RouteInfo.RTN_UNICAST;
+import static android.net.RouteInfo.RTN_UNREACHABLE;
+
+import static com.android.testutils.ParcelUtils.assertParcelSane;
+import static com.android.testutils.ParcelUtils.assertParcelingIsLossless;
+import static com.android.testutils.ParcelUtils.parcelingRoundTrip;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertNotEquals;
+import static org.junit.Assert.assertNull;
+import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.fail;
+
+import android.net.LinkProperties.ProvisioningChange;
+import android.os.Build;
+import android.system.OsConstants;
+import android.util.ArraySet;
+
+import androidx.core.os.BuildCompat;
+import androidx.test.filters.SmallTest;
+import androidx.test.runner.AndroidJUnit4;
+
+import com.android.net.module.util.LinkPropertiesUtils.CompareResult;
+import com.android.testutils.DevSdkIgnoreRule;
+import com.android.testutils.DevSdkIgnoreRule.IgnoreAfter;
+import com.android.testutils.DevSdkIgnoreRule.IgnoreUpTo;
+
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import java.net.Inet4Address;
+import java.net.Inet6Address;
+import java.net.InetAddress;
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.List;
+import java.util.Set;
+
+@RunWith(AndroidJUnit4.class)
+@SmallTest
+public class LinkPropertiesTest {
+    @Rule
+    public final DevSdkIgnoreRule ignoreRule = new DevSdkIgnoreRule();
+
+    private static final InetAddress ADDRV4 = address("75.208.6.1");
+    private static final InetAddress ADDRV6 = address("2001:0db8:85a3:0000:0000:8a2e:0370:7334");
+    private static final InetAddress DNS1 = address("75.208.7.1");
+    private static final InetAddress DNS2 = address("69.78.7.1");
+    private static final InetAddress DNS6 = address("2001:4860:4860::8888");
+    private static final InetAddress PRIVDNS1 = address("1.1.1.1");
+    private static final InetAddress PRIVDNS2 = address("1.0.0.1");
+    private static final InetAddress PRIVDNS6 = address("2606:4700:4700::1111");
+    private static final InetAddress PCSCFV4 = address("10.77.25.37");
+    private static final InetAddress PCSCFV6 = address("2001:0db8:85a3:0000:0000:8a2e:0370:1");
+    private static final InetAddress GATEWAY1 = address("75.208.8.1");
+    private static final InetAddress GATEWAY2 = address("69.78.8.1");
+    private static final InetAddress GATEWAY61 = address("fe80::6:0000:613");
+    private static final InetAddress GATEWAY62 = address("fe80::6:22%lo");
+    private static final InetAddress TESTIPV4ADDR = address("192.168.47.42");
+    private static final InetAddress TESTIPV6ADDR = address("fe80::7:33%43");
+    private static final Inet4Address DHCPSERVER = (Inet4Address) address("192.0.2.1");
+    private static final String NAME = "qmi0";
+    private static final String DOMAINS = "google.com";
+    private static final String PRIV_DNS_SERVER_NAME = "private.dns.com";
+    private static final String TCP_BUFFER_SIZES = "524288,1048576,2097152,262144,524288,1048576";
+    private static final int MTU = 1500;
+    private static final LinkAddress LINKADDRV4 = new LinkAddress(ADDRV4, 32);
+    private static final LinkAddress LINKADDRV6 = new LinkAddress(ADDRV6, 128);
+    private static final LinkAddress LINKADDRV6LINKLOCAL = new LinkAddress("fe80::1/64");
+    private static final Uri CAPPORT_API_URL = Uri.parse("https://test.example.com/capportapi");
+
+    // CaptivePortalData cannot be in a constant as it does not exist on Q.
+    // The test runner also crashes when scanning for tests if it is a return type.
+    private static Object getCaptivePortalData() {
+        return new CaptivePortalData.Builder()
+                .setVenueInfoUrl(Uri.parse("https://test.example.com/venue")).build();
+    }
+
+    private static InetAddress address(String addrString) {
+        return InetAddresses.parseNumericAddress(addrString);
+    }
+
+    private static boolean isAtLeastR() {
+        // BuildCompat.isAtLeastR is documented to return false on release SDKs (including R)
+        return Build.VERSION.SDK_INT > Build.VERSION_CODES.Q || BuildCompat.isAtLeastR();
+    }
+
+    private void checkEmpty(final LinkProperties lp) {
+        assertEquals(0, lp.getAllInterfaceNames().size());
+        assertEquals(0, lp.getAllAddresses().size());
+        assertEquals(0, lp.getDnsServers().size());
+        assertEquals(0, lp.getValidatedPrivateDnsServers().size());
+        assertEquals(0, lp.getPcscfServers().size());
+        assertEquals(0, lp.getAllRoutes().size());
+        assertEquals(0, lp.getAllLinkAddresses().size());
+        assertEquals(0, lp.getStackedLinks().size());
+        assertEquals(0, lp.getMtu());
+        assertNull(lp.getPrivateDnsServerName());
+        assertNull(lp.getDomains());
+        assertNull(lp.getHttpProxy());
+        assertNull(lp.getTcpBufferSizes());
+        assertNull(lp.getNat64Prefix());
+        assertFalse(lp.isProvisioned());
+        assertFalse(lp.isIpv4Provisioned());
+        assertFalse(lp.isIpv6Provisioned());
+        assertFalse(lp.isPrivateDnsActive());
+
+        if (isAtLeastR()) {
+            assertNull(lp.getDhcpServerAddress());
+            assertFalse(lp.isWakeOnLanSupported());
+            assertNull(lp.getCaptivePortalApiUrl());
+            assertNull(lp.getCaptivePortalData());
+        }
+    }
+
+    private LinkProperties makeTestObject() {
+        final LinkProperties lp = new LinkProperties();
+        lp.setInterfaceName(NAME);
+        lp.addLinkAddress(LINKADDRV4);
+        lp.addLinkAddress(LINKADDRV6);
+        lp.addDnsServer(DNS1);
+        lp.addDnsServer(DNS2);
+        lp.addValidatedPrivateDnsServer(PRIVDNS1);
+        lp.addValidatedPrivateDnsServer(PRIVDNS2);
+        lp.setUsePrivateDns(true);
+        lp.setPrivateDnsServerName(PRIV_DNS_SERVER_NAME);
+        lp.addPcscfServer(PCSCFV6);
+        lp.setDomains(DOMAINS);
+        lp.addRoute(new RouteInfo(GATEWAY1));
+        lp.addRoute(new RouteInfo(GATEWAY2));
+        lp.setHttpProxy(ProxyInfo.buildDirectProxy("test", 8888));
+        lp.setMtu(MTU);
+        lp.setTcpBufferSizes(TCP_BUFFER_SIZES);
+        lp.setNat64Prefix(new IpPrefix("2001:db8:0:64::/96"));
+        if (isAtLeastR()) {
+            lp.setDhcpServerAddress(DHCPSERVER);
+            lp.setWakeOnLanSupported(true);
+            lp.setCaptivePortalApiUrl(CAPPORT_API_URL);
+            lp.setCaptivePortalData((CaptivePortalData) getCaptivePortalData());
+        }
+        return lp;
+    }
+
+    public void assertLinkPropertiesEqual(LinkProperties source, LinkProperties target) {
+        // Check implementation of equals(), element by element.
+        assertTrue(source.isIdenticalInterfaceName(target));
+        assertTrue(target.isIdenticalInterfaceName(source));
+
+        assertTrue(source.isIdenticalAddresses(target));
+        assertTrue(target.isIdenticalAddresses(source));
+
+        assertTrue(source.isIdenticalDnses(target));
+        assertTrue(target.isIdenticalDnses(source));
+
+        assertTrue(source.isIdenticalPrivateDns(target));
+        assertTrue(target.isIdenticalPrivateDns(source));
+
+        assertTrue(source.isIdenticalValidatedPrivateDnses(target));
+        assertTrue(target.isIdenticalValidatedPrivateDnses(source));
+
+        assertTrue(source.isIdenticalPcscfs(target));
+        assertTrue(target.isIdenticalPcscfs(source));
+
+        assertTrue(source.isIdenticalRoutes(target));
+        assertTrue(target.isIdenticalRoutes(source));
+
+        assertTrue(source.isIdenticalHttpProxy(target));
+        assertTrue(target.isIdenticalHttpProxy(source));
+
+        assertTrue(source.isIdenticalStackedLinks(target));
+        assertTrue(target.isIdenticalStackedLinks(source));
+
+        assertTrue(source.isIdenticalMtu(target));
+        assertTrue(target.isIdenticalMtu(source));
+
+        assertTrue(source.isIdenticalTcpBufferSizes(target));
+        assertTrue(target.isIdenticalTcpBufferSizes(source));
+
+        if (isAtLeastR()) {
+            assertTrue(source.isIdenticalDhcpServerAddress(target));
+            assertTrue(source.isIdenticalDhcpServerAddress(source));
+
+            assertTrue(source.isIdenticalWakeOnLan(target));
+            assertTrue(target.isIdenticalWakeOnLan(source));
+
+            assertTrue(source.isIdenticalCaptivePortalApiUrl(target));
+            assertTrue(target.isIdenticalCaptivePortalApiUrl(source));
+
+            assertTrue(source.isIdenticalCaptivePortalData(target));
+            assertTrue(target.isIdenticalCaptivePortalData(source));
+        }
+
+        // Check result of equals().
+        assertTrue(source.equals(target));
+        assertTrue(target.equals(source));
+
+        // Check hashCode.
+        assertEquals(source.hashCode(), target.hashCode());
+    }
+
+    @Test
+    public void testEqualsNull() {
+        LinkProperties source = new LinkProperties();
+        LinkProperties target = new LinkProperties();
+
+        assertFalse(source == target);
+        assertLinkPropertiesEqual(source, target);
+    }
+
+    @Test
+    public void testEqualsSameOrder() throws Exception {
+        LinkProperties source = new LinkProperties();
+        source.setInterfaceName(NAME);
+        // set 2 link addresses
+        source.addLinkAddress(LINKADDRV4);
+        source.addLinkAddress(LINKADDRV6);
+        // set 2 dnses
+        source.addDnsServer(DNS1);
+        source.addDnsServer(DNS2);
+        // set 1 pcscf
+        source.addPcscfServer(PCSCFV6);
+        // set 2 gateways
+        source.addRoute(new RouteInfo(GATEWAY1));
+        source.addRoute(new RouteInfo(GATEWAY2));
+        source.setMtu(MTU);
+
+        LinkProperties target = new LinkProperties();
+
+        // All fields are same
+        target.setInterfaceName(NAME);
+        target.addLinkAddress(LINKADDRV4);
+        target.addLinkAddress(LINKADDRV6);
+        target.addDnsServer(DNS1);
+        target.addDnsServer(DNS2);
+        target.addPcscfServer(PCSCFV6);
+        target.addRoute(new RouteInfo(GATEWAY1));
+        target.addRoute(new RouteInfo(GATEWAY2));
+        target.setMtu(MTU);
+
+        assertLinkPropertiesEqual(source, target);
+
+        target.clear();
+        // change Interface Name
+        target.setInterfaceName("qmi1");
+        target.addLinkAddress(LINKADDRV4);
+        target.addLinkAddress(LINKADDRV6);
+        target.addDnsServer(DNS1);
+        target.addDnsServer(DNS2);
+        target.addPcscfServer(PCSCFV6);
+        target.addRoute(new RouteInfo(GATEWAY1));
+        target.addRoute(new RouteInfo(GATEWAY2));
+        target.setMtu(MTU);
+        assertFalse(source.equals(target));
+
+        target.clear();
+        target.setInterfaceName(NAME);
+        // change link addresses
+        target.addLinkAddress(new LinkAddress(address("75.208.6.2"), 32));
+        target.addLinkAddress(LINKADDRV6);
+        target.addDnsServer(DNS1);
+        target.addDnsServer(DNS2);
+        target.addPcscfServer(PCSCFV6);
+        target.addRoute(new RouteInfo(GATEWAY1));
+        target.addRoute(new RouteInfo(GATEWAY2));
+        target.setMtu(MTU);
+        assertFalse(source.equals(target));
+
+        target.clear();
+        target.setInterfaceName(NAME);
+        target.addLinkAddress(LINKADDRV4);
+        target.addLinkAddress(LINKADDRV6);
+        // change dnses
+        target.addDnsServer(address("75.208.7.2"));
+        target.addDnsServer(DNS2);
+        target.addPcscfServer(PCSCFV6);
+        target.addRoute(new RouteInfo(GATEWAY1));
+        target.addRoute(new RouteInfo(GATEWAY2));
+        target.setMtu(MTU);
+        assertFalse(source.equals(target));
+
+        target.clear();
+        target.setInterfaceName(NAME);
+        target.addLinkAddress(LINKADDRV4);
+        target.addLinkAddress(LINKADDRV6);
+        target.addDnsServer(address("75.208.7.2"));
+        target.addDnsServer(DNS2);
+        // change pcscf
+        target.addPcscfServer(address("2001::1"));
+        target.addRoute(new RouteInfo(GATEWAY1));
+        target.addRoute(new RouteInfo(GATEWAY2));
+        target.setMtu(MTU);
+        assertFalse(source.equals(target));
+
+        target.clear();
+        target.setInterfaceName(NAME);
+        target.addLinkAddress(LINKADDRV4);
+        target.addLinkAddress(LINKADDRV6);
+        target.addDnsServer(DNS1);
+        target.addDnsServer(DNS2);
+        // change gateway
+        target.addRoute(new RouteInfo(address("75.208.8.2")));
+        target.setMtu(MTU);
+        target.addRoute(new RouteInfo(GATEWAY2));
+        assertFalse(source.equals(target));
+
+        target.clear();
+        target.setInterfaceName(NAME);
+        target.addLinkAddress(LINKADDRV4);
+        target.addLinkAddress(LINKADDRV6);
+        target.addDnsServer(DNS1);
+        target.addDnsServer(DNS2);
+        target.addRoute(new RouteInfo(GATEWAY1));
+        target.addRoute(new RouteInfo(GATEWAY2));
+        // change mtu
+        target.setMtu(1440);
+        assertFalse(source.equals(target));
+    }
+
+    @Test
+    public void testEqualsDifferentOrder() throws Exception {
+        LinkProperties source = new LinkProperties();
+        source.setInterfaceName(NAME);
+        // set 2 link addresses
+        source.addLinkAddress(LINKADDRV4);
+        source.addLinkAddress(LINKADDRV6);
+        // set 2 dnses
+        source.addDnsServer(DNS1);
+        source.addDnsServer(DNS2);
+        // set 2 gateways
+        source.addRoute(new RouteInfo(LINKADDRV4, GATEWAY1));
+        source.addRoute(new RouteInfo(GATEWAY2));
+        source.setMtu(MTU);
+
+        LinkProperties target = new LinkProperties();
+        // Exchange order
+        target.setInterfaceName(NAME);
+        target.addLinkAddress(LINKADDRV6);
+        target.addLinkAddress(LINKADDRV4);
+        target.addDnsServer(DNS2);
+        target.addDnsServer(DNS1);
+        target.addRoute(new RouteInfo(GATEWAY2));
+        target.addRoute(new RouteInfo(LINKADDRV4, GATEWAY1));
+        target.setMtu(MTU);
+
+        assertLinkPropertiesEqual(source, target);
+    }
+
+    @Test
+    public void testEqualsDuplicated() throws Exception {
+        LinkProperties source = new LinkProperties();
+        // set 3 link addresses, eg, [A, A, B]
+        source.addLinkAddress(LINKADDRV4);
+        source.addLinkAddress(LINKADDRV4);
+        source.addLinkAddress(LINKADDRV6);
+
+        LinkProperties target = new LinkProperties();
+        // set 3 link addresses, eg, [A, B, B]
+        target.addLinkAddress(LINKADDRV4);
+        target.addLinkAddress(LINKADDRV6);
+        target.addLinkAddress(LINKADDRV6);
+
+        assertLinkPropertiesEqual(source, target);
+    }
+
+    private void assertAllRoutesHaveInterface(String iface, LinkProperties lp) {
+        for (RouteInfo r : lp.getRoutes()) {
+            assertEquals(iface, r.getInterface());
+        }
+    }
+
+    private void assertAllRoutesNotHaveInterface(String iface, LinkProperties lp) {
+        for (RouteInfo r : lp.getRoutes()) {
+            assertNotEquals(iface, r.getInterface());
+        }
+    }
+
+    @Test
+    public void testRouteInterfaces() {
+        LinkAddress prefix1 = new LinkAddress(address("2001:db8:1::"), 48);
+        LinkAddress prefix2 = new LinkAddress(address("2001:db8:2::"), 48);
+        InetAddress address = ADDRV6;
+
+        // Add a route with no interface to a LinkProperties with no interface. No errors.
+        LinkProperties lp = new LinkProperties();
+        RouteInfo r = new RouteInfo(prefix1, address, null);
+        assertTrue(lp.addRoute(r));
+        assertEquals(1, lp.getRoutes().size());
+        assertAllRoutesHaveInterface(null, lp);
+
+        // Adding the same route twice has no effect.
+        assertFalse(lp.addRoute(r));
+        assertEquals(1, lp.getRoutes().size());
+
+        // Add a route with an interface. Expect an exception.
+        r = new RouteInfo(prefix2, address, "wlan0");
+        try {
+          lp.addRoute(r);
+          fail("Adding wlan0 route to LP with no interface, expect exception");
+        } catch (IllegalArgumentException expected) {}
+
+        // Change the interface name. All the routes should change their interface name too.
+        lp.setInterfaceName("rmnet0");
+        assertAllRoutesHaveInterface("rmnet0", lp);
+        assertAllRoutesNotHaveInterface(null, lp);
+        assertAllRoutesNotHaveInterface("wlan0", lp);
+
+        // Now add a route with the wrong interface. This causes an exception too.
+        try {
+          lp.addRoute(r);
+          fail("Adding wlan0 route to rmnet0 LP, expect exception");
+        } catch (IllegalArgumentException expected) {}
+
+        // If the interface name matches, the route is added.
+        r = new RouteInfo(prefix2, null, "wlan0");
+        lp.setInterfaceName("wlan0");
+        lp.addRoute(r);
+        assertEquals(2, lp.getRoutes().size());
+        assertAllRoutesHaveInterface("wlan0", lp);
+        assertAllRoutesNotHaveInterface("rmnet0", lp);
+
+        // Routes with null interfaces are converted to wlan0.
+        r = RouteInfo.makeHostRoute(ADDRV6, null);
+        lp.addRoute(r);
+        assertEquals(3, lp.getRoutes().size());
+        assertAllRoutesHaveInterface("wlan0", lp);
+
+        // Check routes are updated correctly when calling setInterfaceName.
+        LinkProperties lp2 = new LinkProperties(lp);
+        assertAllRoutesHaveInterface("wlan0", lp2);
+        final CompareResult<RouteInfo> cr1 =
+                new CompareResult<>(lp.getAllRoutes(), lp2.getAllRoutes());
+        assertEquals(0, cr1.added.size());
+        assertEquals(0, cr1.removed.size());
+
+        lp2.setInterfaceName("p2p0");
+        assertAllRoutesHaveInterface("p2p0", lp2);
+        assertAllRoutesNotHaveInterface("wlan0", lp2);
+        final CompareResult<RouteInfo> cr2 =
+                new CompareResult<>(lp.getAllRoutes(), lp2.getAllRoutes());
+        assertEquals(3, cr2.added.size());
+        assertEquals(3, cr2.removed.size());
+
+        // Remove route with incorrect interface, no route removed.
+        lp.removeRoute(new RouteInfo(prefix2, null, null));
+        assertEquals(3, lp.getRoutes().size());
+
+        // Check remove works when interface is correct.
+        lp.removeRoute(new RouteInfo(prefix2, null, "wlan0"));
+        assertEquals(2, lp.getRoutes().size());
+        assertAllRoutesHaveInterface("wlan0", lp);
+        assertAllRoutesNotHaveInterface("p2p0", lp);
+    }
+
+    @Test
+    public void testStackedInterfaces() {
+        LinkProperties rmnet0 = new LinkProperties();
+        rmnet0.setInterfaceName("rmnet0");
+        rmnet0.addLinkAddress(LINKADDRV6);
+
+        LinkProperties clat4 = new LinkProperties();
+        clat4.setInterfaceName("clat4");
+        clat4.addLinkAddress(LINKADDRV4);
+
+        assertEquals(0, rmnet0.getStackedLinks().size());
+        assertEquals(1, rmnet0.getAddresses().size());
+        assertEquals(1, rmnet0.getLinkAddresses().size());
+        assertEquals(1, rmnet0.getAllAddresses().size());
+        assertEquals(1, rmnet0.getAllLinkAddresses().size());
+        assertEquals(1, rmnet0.getAllInterfaceNames().size());
+        assertEquals("rmnet0", rmnet0.getAllInterfaceNames().get(0));
+
+        rmnet0.addStackedLink(clat4);
+        assertEquals(1, rmnet0.getStackedLinks().size());
+        assertEquals(1, rmnet0.getAddresses().size());
+        assertEquals(1, rmnet0.getLinkAddresses().size());
+        assertEquals(2, rmnet0.getAllAddresses().size());
+        assertEquals(2, rmnet0.getAllLinkAddresses().size());
+        assertEquals(2, rmnet0.getAllInterfaceNames().size());
+        assertEquals("rmnet0", rmnet0.getAllInterfaceNames().get(0));
+        assertEquals("clat4", rmnet0.getAllInterfaceNames().get(1));
+
+        rmnet0.addStackedLink(clat4);
+        assertEquals(1, rmnet0.getStackedLinks().size());
+        assertEquals(1, rmnet0.getAddresses().size());
+        assertEquals(1, rmnet0.getLinkAddresses().size());
+        assertEquals(2, rmnet0.getAllAddresses().size());
+        assertEquals(2, rmnet0.getAllLinkAddresses().size());
+        assertEquals(2, rmnet0.getAllInterfaceNames().size());
+        assertEquals("rmnet0", rmnet0.getAllInterfaceNames().get(0));
+        assertEquals("clat4", rmnet0.getAllInterfaceNames().get(1));
+
+        assertEquals(0, clat4.getStackedLinks().size());
+
+        // Modify an item in the returned collection to see what happens.
+        for (LinkProperties link : rmnet0.getStackedLinks()) {
+            if (link.getInterfaceName().equals("clat4")) {
+               link.setInterfaceName("newname");
+            }
+        }
+        for (LinkProperties link : rmnet0.getStackedLinks()) {
+            assertFalse("newname".equals(link.getInterfaceName()));
+        }
+
+        assertTrue(rmnet0.removeStackedLink("clat4"));
+        assertEquals(0, rmnet0.getStackedLinks().size());
+        assertEquals(1, rmnet0.getAddresses().size());
+        assertEquals(1, rmnet0.getLinkAddresses().size());
+        assertEquals(1, rmnet0.getAllAddresses().size());
+        assertEquals(1, rmnet0.getAllLinkAddresses().size());
+        assertEquals(1, rmnet0.getAllInterfaceNames().size());
+        assertEquals("rmnet0", rmnet0.getAllInterfaceNames().get(0));
+
+        assertFalse(rmnet0.removeStackedLink("clat4"));
+    }
+
+    private LinkAddress getFirstLinkAddress(LinkProperties lp) {
+        return lp.getLinkAddresses().iterator().next();
+    }
+
+    @Test
+    public void testAddressMethods() {
+        LinkProperties lp = new LinkProperties();
+
+        // No addresses.
+        assertFalse(lp.hasIpv4Address());
+        assertFalse(lp.hasGlobalIpv6Address());
+
+        // Addresses on stacked links don't count.
+        LinkProperties stacked = new LinkProperties();
+        stacked.setInterfaceName("stacked");
+        lp.addStackedLink(stacked);
+        stacked.addLinkAddress(LINKADDRV4);
+        stacked.addLinkAddress(LINKADDRV6);
+        assertTrue(stacked.hasIpv4Address());
+        assertTrue(stacked.hasGlobalIpv6Address());
+        assertFalse(lp.hasIpv4Address());
+        assertFalse(lp.hasGlobalIpv6Address());
+        lp.removeStackedLink("stacked");
+        assertFalse(lp.hasIpv4Address());
+        assertFalse(lp.hasGlobalIpv6Address());
+
+        // Addresses on the base link.
+        // Check the return values of hasIpvXAddress and ensure the add/remove methods return true
+        // iff something changes.
+        assertEquals(0, lp.getLinkAddresses().size());
+        assertTrue(lp.addLinkAddress(LINKADDRV6));
+        assertEquals(1, lp.getLinkAddresses().size());
+        assertFalse(lp.hasIpv4Address());
+        assertTrue(lp.hasGlobalIpv6Address());
+
+        assertTrue(lp.removeLinkAddress(LINKADDRV6));
+        assertEquals(0, lp.getLinkAddresses().size());
+
+        assertTrue(lp.addLinkAddress(LINKADDRV6LINKLOCAL));
+        assertEquals(1, lp.getLinkAddresses().size());
+        assertFalse(lp.hasGlobalIpv6Address());
+
+        assertTrue(lp.addLinkAddress(LINKADDRV4));
+        assertEquals(2, lp.getLinkAddresses().size());
+        assertTrue(lp.hasIpv4Address());
+        assertFalse(lp.hasGlobalIpv6Address());
+
+        assertTrue(lp.addLinkAddress(LINKADDRV6));
+        assertEquals(3, lp.getLinkAddresses().size());
+        assertTrue(lp.hasIpv4Address());
+        assertTrue(lp.hasGlobalIpv6Address());
+
+        assertTrue(lp.removeLinkAddress(LINKADDRV6LINKLOCAL));
+        assertEquals(2, lp.getLinkAddresses().size());
+        assertTrue(lp.hasIpv4Address());
+        assertTrue(lp.hasGlobalIpv6Address());
+
+        // Adding an address twice has no effect.
+        // Removing an address that's not present has no effect.
+        assertFalse(lp.addLinkAddress(LINKADDRV4));
+        assertEquals(2, lp.getLinkAddresses().size());
+        assertTrue(lp.hasIpv4Address());
+        assertTrue(lp.removeLinkAddress(LINKADDRV4));
+        assertEquals(1, lp.getLinkAddresses().size());
+        assertFalse(lp.hasIpv4Address());
+        assertFalse(lp.removeLinkAddress(LINKADDRV4));
+        assertEquals(1, lp.getLinkAddresses().size());
+
+        // Adding an address that's already present but with different properties causes the
+        // existing address to be updated and returns true.
+        // Start with only LINKADDRV6.
+        assertEquals(1, lp.getLinkAddresses().size());
+        assertEquals(LINKADDRV6, getFirstLinkAddress(lp));
+
+        // Create a LinkAddress object for the same address, but with different flags.
+        LinkAddress deprecated = new LinkAddress(ADDRV6, 128,
+                OsConstants.IFA_F_DEPRECATED, OsConstants.RT_SCOPE_UNIVERSE);
+        assertTrue(deprecated.isSameAddressAs(LINKADDRV6));
+        assertFalse(deprecated.equals(LINKADDRV6));
+
+        // Check that adding it updates the existing address instead of adding a new one.
+        assertTrue(lp.addLinkAddress(deprecated));
+        assertEquals(1, lp.getLinkAddresses().size());
+        assertEquals(deprecated, getFirstLinkAddress(lp));
+        assertFalse(LINKADDRV6.equals(getFirstLinkAddress(lp)));
+
+        // Removing LINKADDRV6 removes deprecated, because removing addresses ignores properties.
+        assertTrue(lp.removeLinkAddress(LINKADDRV6));
+        assertEquals(0, lp.getLinkAddresses().size());
+    }
+
+    @Test
+    public void testLinkAddresses() {
+        final LinkProperties lp = new LinkProperties();
+        lp.addLinkAddress(LINKADDRV4);
+        lp.addLinkAddress(LINKADDRV6);
+
+        final LinkProperties lp2 = new LinkProperties();
+        lp2.addLinkAddress(LINKADDRV6);
+
+        final LinkProperties lp3 = new LinkProperties();
+        final List<LinkAddress> linkAddresses = Arrays.asList(LINKADDRV4);
+        lp3.setLinkAddresses(linkAddresses);
+
+        assertFalse(lp.equals(lp2));
+        assertFalse(lp2.equals(lp3));
+
+        lp.removeLinkAddress(LINKADDRV4);
+        assertTrue(lp.equals(lp2));
+
+        lp2.setLinkAddresses(lp3.getLinkAddresses());
+        assertTrue(lp2.equals(lp3));
+    }
+
+    @Test
+    public void testNat64Prefix() throws Exception {
+        LinkProperties lp = new LinkProperties();
+        lp.addLinkAddress(LINKADDRV4);
+        lp.addLinkAddress(LINKADDRV6);
+
+        assertNull(lp.getNat64Prefix());
+
+        IpPrefix p = new IpPrefix("64:ff9b::/96");
+        lp.setNat64Prefix(p);
+        assertEquals(p, lp.getNat64Prefix());
+
+        p = new IpPrefix("2001:db8:a:b:1:2:3::/96");
+        lp.setNat64Prefix(p);
+        assertEquals(p, lp.getNat64Prefix());
+
+        p = new IpPrefix("2001:db8:a:b:1:2::/80");
+        try {
+            lp.setNat64Prefix(p);
+        } catch (IllegalArgumentException expected) {
+        }
+
+        p = new IpPrefix("64:ff9b::/64");
+        try {
+            lp.setNat64Prefix(p);
+        } catch (IllegalArgumentException expected) {
+        }
+
+        assertEquals(new IpPrefix("2001:db8:a:b:1:2:3::/96"), lp.getNat64Prefix());
+
+        lp.setNat64Prefix(null);
+        assertNull(lp.getNat64Prefix());
+    }
+
+    @Test
+    public void testIsProvisioned() {
+        LinkProperties lp4 = new LinkProperties();
+        assertFalse("v4only:empty", lp4.isProvisioned());
+        lp4.addLinkAddress(LINKADDRV4);
+        assertFalse("v4only:addr-only", lp4.isProvisioned());
+        lp4.addDnsServer(DNS1);
+        assertFalse("v4only:addr+dns", lp4.isProvisioned());
+        lp4.addRoute(new RouteInfo(GATEWAY1));
+        assertTrue("v4only:addr+dns+route", lp4.isProvisioned());
+        assertTrue("v4only:addr+dns+route", lp4.isIpv4Provisioned());
+        assertFalse("v4only:addr+dns+route", lp4.isIpv6Provisioned());
+
+        LinkProperties lp6 = new LinkProperties();
+        assertFalse("v6only:empty", lp6.isProvisioned());
+        lp6.addLinkAddress(LINKADDRV6LINKLOCAL);
+        assertFalse("v6only:fe80-only", lp6.isProvisioned());
+        lp6.addDnsServer(DNS6);
+        assertFalse("v6only:fe80+dns", lp6.isProvisioned());
+        lp6.addRoute(new RouteInfo(GATEWAY61));
+        assertFalse("v6only:fe80+dns+route", lp6.isProvisioned());
+        lp6.addLinkAddress(LINKADDRV6);
+        assertTrue("v6only:fe80+global+dns+route", lp6.isIpv6Provisioned());
+        assertTrue("v6only:fe80+global+dns+route", lp6.isProvisioned());
+        lp6.removeLinkAddress(LINKADDRV6LINKLOCAL);
+        assertFalse("v6only:global+dns+route", lp6.isIpv4Provisioned());
+        assertTrue("v6only:global+dns+route", lp6.isIpv6Provisioned());
+        assertTrue("v6only:global+dns+route", lp6.isProvisioned());
+
+        LinkProperties lp46 = new LinkProperties();
+        lp46.addLinkAddress(LINKADDRV4);
+        lp46.addLinkAddress(LINKADDRV6);
+        lp46.addDnsServer(DNS1);
+        lp46.addDnsServer(DNS6);
+        assertFalse("dualstack:missing-routes", lp46.isProvisioned());
+        lp46.addRoute(new RouteInfo(GATEWAY1));
+        assertTrue("dualstack:v4-provisioned", lp46.isIpv4Provisioned());
+        assertFalse("dualstack:v4-provisioned", lp46.isIpv6Provisioned());
+        assertTrue("dualstack:v4-provisioned", lp46.isProvisioned());
+        lp46.addRoute(new RouteInfo(GATEWAY61));
+        assertTrue("dualstack:both-provisioned", lp46.isIpv4Provisioned());
+        assertTrue("dualstack:both-provisioned", lp46.isIpv6Provisioned());
+        assertTrue("dualstack:both-provisioned", lp46.isProvisioned());
+
+        // A link with an IPv6 address and default route, but IPv4 DNS server.
+        LinkProperties mixed = new LinkProperties();
+        mixed.addLinkAddress(LINKADDRV6);
+        mixed.addDnsServer(DNS1);
+        mixed.addRoute(new RouteInfo(GATEWAY61));
+        assertFalse("mixed:addr6+route6+dns4", mixed.isIpv4Provisioned());
+        assertFalse("mixed:addr6+route6+dns4", mixed.isIpv6Provisioned());
+        assertFalse("mixed:addr6+route6+dns4", mixed.isProvisioned());
+    }
+
+    @Test
+    public void testCompareProvisioning() {
+        LinkProperties v4lp = new LinkProperties();
+        v4lp.addLinkAddress(LINKADDRV4);
+        v4lp.addRoute(new RouteInfo(GATEWAY1));
+        v4lp.addDnsServer(DNS1);
+        assertTrue(v4lp.isProvisioned());
+
+        LinkProperties v4r = new LinkProperties(v4lp);
+        v4r.removeDnsServer(DNS1);
+        assertFalse(v4r.isProvisioned());
+
+        assertEquals(ProvisioningChange.STILL_NOT_PROVISIONED,
+                LinkProperties.compareProvisioning(v4r, v4r));
+        assertEquals(ProvisioningChange.LOST_PROVISIONING,
+                LinkProperties.compareProvisioning(v4lp, v4r));
+        assertEquals(ProvisioningChange.GAINED_PROVISIONING,
+                LinkProperties.compareProvisioning(v4r, v4lp));
+        assertEquals(ProvisioningChange.STILL_PROVISIONED,
+                LinkProperties.compareProvisioning(v4lp, v4lp));
+
+        // Check that losing IPv4 provisioning on a dualstack network is
+        // seen as a total loss of provisioning.
+        LinkProperties v6lp = new LinkProperties();
+        v6lp.addLinkAddress(LINKADDRV6);
+        v6lp.addRoute(new RouteInfo(GATEWAY61));
+        v6lp.addDnsServer(DNS6);
+        assertFalse(v6lp.isIpv4Provisioned());
+        assertTrue(v6lp.isIpv6Provisioned());
+        assertTrue(v6lp.isProvisioned());
+
+        LinkProperties v46lp = new LinkProperties(v6lp);
+        v46lp.addLinkAddress(LINKADDRV4);
+        v46lp.addRoute(new RouteInfo(GATEWAY1));
+        v46lp.addDnsServer(DNS1);
+        assertTrue(v46lp.isIpv4Provisioned());
+        assertTrue(v46lp.isIpv6Provisioned());
+        assertTrue(v46lp.isProvisioned());
+
+        assertEquals(ProvisioningChange.STILL_PROVISIONED,
+                LinkProperties.compareProvisioning(v4lp, v46lp));
+        assertEquals(ProvisioningChange.STILL_PROVISIONED,
+                LinkProperties.compareProvisioning(v6lp, v46lp));
+        assertEquals(ProvisioningChange.LOST_PROVISIONING,
+                LinkProperties.compareProvisioning(v46lp, v6lp));
+        assertEquals(ProvisioningChange.LOST_PROVISIONING,
+                LinkProperties.compareProvisioning(v46lp, v4lp));
+
+        // Check that losing and gaining a secondary router does not change
+        // the provisioning status.
+        LinkProperties v6lp2 = new LinkProperties(v6lp);
+        v6lp2.addRoute(new RouteInfo(GATEWAY62));
+        assertTrue(v6lp2.isProvisioned());
+
+        assertEquals(ProvisioningChange.STILL_PROVISIONED,
+                LinkProperties.compareProvisioning(v6lp2, v6lp));
+        assertEquals(ProvisioningChange.STILL_PROVISIONED,
+                LinkProperties.compareProvisioning(v6lp, v6lp2));
+    }
+
+    @Test
+    public void testIsReachable() {
+        final LinkProperties v4lp = new LinkProperties();
+        assertFalse(v4lp.isReachable(DNS1));
+        assertFalse(v4lp.isReachable(DNS2));
+
+        // Add an on-link route, making the on-link DNS server reachable,
+        // but there is still no IPv4 address.
+        assertTrue(v4lp.addRoute(new RouteInfo(new IpPrefix(address("75.208.0.0"), 16))));
+        assertFalse(v4lp.isReachable(DNS1));
+        assertFalse(v4lp.isReachable(DNS2));
+
+        // Adding an IPv4 address (right now, any IPv4 address) means we use
+        // the routes to compute likely reachability.
+        assertTrue(v4lp.addLinkAddress(new LinkAddress(ADDRV4, 16)));
+        assertTrue(v4lp.isReachable(DNS1));
+        assertFalse(v4lp.isReachable(DNS2));
+
+        // Adding a default route makes the off-link DNS server reachable.
+        assertTrue(v4lp.addRoute(new RouteInfo(GATEWAY1)));
+        assertTrue(v4lp.isReachable(DNS1));
+        assertTrue(v4lp.isReachable(DNS2));
+
+        final LinkProperties v6lp = new LinkProperties();
+        final InetAddress kLinkLocalDns = address("fe80::6:1");
+        final InetAddress kLinkLocalDnsWithScope = address("fe80::6:2%43");
+        final InetAddress kOnLinkDns = address("2001:db8:85a3::53");
+        assertFalse(v6lp.isReachable(kLinkLocalDns));
+        assertFalse(v6lp.isReachable(kLinkLocalDnsWithScope));
+        assertFalse(v6lp.isReachable(kOnLinkDns));
+        assertFalse(v6lp.isReachable(DNS6));
+
+        // Add a link-local route, making the link-local DNS servers reachable. Because
+        // we assume the presence of an IPv6 link-local address, link-local DNS servers
+        // are considered reachable, but only those with a non-zero scope identifier.
+        assertTrue(v6lp.addRoute(new RouteInfo(new IpPrefix(address("fe80::"), 64))));
+        assertFalse(v6lp.isReachable(kLinkLocalDns));
+        assertTrue(v6lp.isReachable(kLinkLocalDnsWithScope));
+        assertFalse(v6lp.isReachable(kOnLinkDns));
+        assertFalse(v6lp.isReachable(DNS6));
+
+        // Add a link-local address--nothing changes.
+        assertTrue(v6lp.addLinkAddress(LINKADDRV6LINKLOCAL));
+        assertFalse(v6lp.isReachable(kLinkLocalDns));
+        assertTrue(v6lp.isReachable(kLinkLocalDnsWithScope));
+        assertFalse(v6lp.isReachable(kOnLinkDns));
+        assertFalse(v6lp.isReachable(DNS6));
+
+        // Add a global route on link, but no global address yet. DNS servers reachable
+        // via a route that doesn't require a gateway: give them the benefit of the
+        // doubt and hope the link-local source address suffices for communication.
+        assertTrue(v6lp.addRoute(new RouteInfo(new IpPrefix(address("2001:db8:85a3::"), 64))));
+        assertFalse(v6lp.isReachable(kLinkLocalDns));
+        assertTrue(v6lp.isReachable(kLinkLocalDnsWithScope));
+        assertTrue(v6lp.isReachable(kOnLinkDns));
+        assertFalse(v6lp.isReachable(DNS6));
+
+        // Add a global address; the on-link global address DNS server is (still)
+        // presumed reachable.
+        assertTrue(v6lp.addLinkAddress(new LinkAddress(ADDRV6, 64)));
+        assertFalse(v6lp.isReachable(kLinkLocalDns));
+        assertTrue(v6lp.isReachable(kLinkLocalDnsWithScope));
+        assertTrue(v6lp.isReachable(kOnLinkDns));
+        assertFalse(v6lp.isReachable(DNS6));
+
+        // Adding a default route makes the off-link DNS server reachable.
+        assertTrue(v6lp.addRoute(new RouteInfo(GATEWAY62)));
+        assertFalse(v6lp.isReachable(kLinkLocalDns));
+        assertTrue(v6lp.isReachable(kLinkLocalDnsWithScope));
+        assertTrue(v6lp.isReachable(kOnLinkDns));
+        assertTrue(v6lp.isReachable(DNS6));
+
+        // Check isReachable on stacked links. This requires that the source IP address be assigned
+        // on the interface returned by the route lookup.
+        LinkProperties stacked = new LinkProperties();
+
+        // Can't add a stacked link without an interface name.
+        stacked.setInterfaceName("v4-test0");
+        v6lp.addStackedLink(stacked);
+
+        InetAddress stackedAddress = address("192.0.0.4");
+        LinkAddress stackedLinkAddress = new LinkAddress(stackedAddress, 32);
+        assertFalse(v6lp.isReachable(stackedAddress));
+        stacked.addLinkAddress(stackedLinkAddress);
+        assertFalse(v6lp.isReachable(stackedAddress));
+        stacked.addRoute(new RouteInfo(stackedLinkAddress));
+        assertTrue(stacked.isReachable(stackedAddress));
+        assertTrue(v6lp.isReachable(stackedAddress));
+
+        assertFalse(v6lp.isReachable(DNS1));
+        stacked.addRoute(new RouteInfo((IpPrefix) null, stackedAddress));
+        assertTrue(v6lp.isReachable(DNS1));
+    }
+
+    @Test
+    public void testLinkPropertiesEnsureDirectlyConnectedRoutes() {
+        // IPv4 case: no route added initially
+        LinkProperties rmnet0 = new LinkProperties();
+        rmnet0.setInterfaceName("rmnet0");
+        rmnet0.addLinkAddress(new LinkAddress("10.0.0.2/8"));
+        RouteInfo directRoute0 = new RouteInfo(new IpPrefix("10.0.0.0/8"), null,
+                rmnet0.getInterfaceName());
+
+        // Since no routes is added explicitly, getAllRoutes() should return empty.
+        assertTrue(rmnet0.getAllRoutes().isEmpty());
+        rmnet0.ensureDirectlyConnectedRoutes();
+        // ensureDirectlyConnectedRoutes() should have added the missing local route.
+        assertEqualRoutes(Collections.singletonList(directRoute0), rmnet0.getAllRoutes());
+
+        // IPv4 case: both direct and default routes added initially
+        LinkProperties rmnet1 = new LinkProperties();
+        rmnet1.setInterfaceName("rmnet1");
+        rmnet1.addLinkAddress(new LinkAddress("10.0.0.3/8"));
+        RouteInfo defaultRoute1 = new RouteInfo((IpPrefix) null, address("10.0.0.1"),
+                rmnet1.getInterfaceName());
+        RouteInfo directRoute1 = new RouteInfo(new IpPrefix("10.0.0.0/8"), null,
+                rmnet1.getInterfaceName());
+        rmnet1.addRoute(defaultRoute1);
+        rmnet1.addRoute(directRoute1);
+
+        // Check added routes
+        assertEqualRoutes(Arrays.asList(defaultRoute1, directRoute1), rmnet1.getAllRoutes());
+        // ensureDirectlyConnectedRoutes() shouldn't change the routes since direct connected
+        // route is already part of the configuration.
+        rmnet1.ensureDirectlyConnectedRoutes();
+        assertEqualRoutes(Arrays.asList(defaultRoute1, directRoute1), rmnet1.getAllRoutes());
+
+        // IPv6 case: only default routes added initially
+        LinkProperties rmnet2 = new LinkProperties();
+        rmnet2.setInterfaceName("rmnet2");
+        rmnet2.addLinkAddress(new LinkAddress("fe80::cafe/64"));
+        rmnet2.addLinkAddress(new LinkAddress("2001:db8::2/64"));
+        RouteInfo defaultRoute2 = new RouteInfo((IpPrefix) null, address("2001:db8::1"),
+                rmnet2.getInterfaceName());
+        RouteInfo directRoute2 = new RouteInfo(new IpPrefix("2001:db8::/64"), null,
+                rmnet2.getInterfaceName());
+        RouteInfo linkLocalRoute2 = new RouteInfo(new IpPrefix("fe80::/64"), null,
+                rmnet2.getInterfaceName());
+        rmnet2.addRoute(defaultRoute2);
+
+        assertEqualRoutes(Arrays.asList(defaultRoute2), rmnet2.getAllRoutes());
+        rmnet2.ensureDirectlyConnectedRoutes();
+        assertEqualRoutes(Arrays.asList(defaultRoute2, directRoute2, linkLocalRoute2),
+                rmnet2.getAllRoutes());
+
+        // Corner case: no interface name
+        LinkProperties rmnet3 = new LinkProperties();
+        rmnet3.addLinkAddress(new LinkAddress("192.168.0.2/24"));
+        RouteInfo directRoute3 = new RouteInfo(new IpPrefix("192.168.0.0/24"), null,
+                rmnet3.getInterfaceName());
+
+        assertTrue(rmnet3.getAllRoutes().isEmpty());
+        rmnet3.ensureDirectlyConnectedRoutes();
+        assertEqualRoutes(Collections.singletonList(directRoute3), rmnet3.getAllRoutes());
+    }
+
+    private void assertEqualRoutes(Collection<RouteInfo> expected, Collection<RouteInfo> actual) {
+        Set<RouteInfo> expectedSet = new ArraySet<>(expected);
+        Set<RouteInfo> actualSet = new ArraySet<>(actual);
+        // Duplicated entries in actual routes are considered failures
+        assertEquals(actual.size(), actualSet.size());
+
+        assertEquals(expectedSet, actualSet);
+    }
+
+    private static LinkProperties makeLinkPropertiesForParceling() {
+        LinkProperties source = new LinkProperties();
+        source.setInterfaceName(NAME);
+
+        source.addLinkAddress(LINKADDRV4);
+        source.addLinkAddress(LINKADDRV6);
+
+        source.addDnsServer(DNS1);
+        source.addDnsServer(DNS2);
+        source.addDnsServer(GATEWAY62);
+
+        source.addPcscfServer(TESTIPV4ADDR);
+        source.addPcscfServer(TESTIPV6ADDR);
+
+        source.setUsePrivateDns(true);
+        source.setPrivateDnsServerName(PRIV_DNS_SERVER_NAME);
+
+        source.setDomains(DOMAINS);
+
+        source.addRoute(new RouteInfo(GATEWAY1));
+        source.addRoute(new RouteInfo(GATEWAY2));
+
+        source.addValidatedPrivateDnsServer(DNS6);
+        source.addValidatedPrivateDnsServer(GATEWAY61);
+        source.addValidatedPrivateDnsServer(TESTIPV6ADDR);
+
+        source.setHttpProxy(ProxyInfo.buildDirectProxy("test", 8888));
+
+        source.setMtu(MTU);
+
+        source.setTcpBufferSizes(TCP_BUFFER_SIZES);
+
+        source.setNat64Prefix(new IpPrefix("2001:db8:1:2:64:64::/96"));
+
+        final LinkProperties stacked = new LinkProperties();
+        stacked.setInterfaceName("test-stacked");
+        source.addStackedLink(stacked);
+
+        return source;
+    }
+
+    @Test @IgnoreAfter(Build.VERSION_CODES.Q)
+    public void testLinkPropertiesParcelable_Q() throws Exception {
+        final LinkProperties source = makeLinkPropertiesForParceling();
+        assertParcelSane(source, 14 /* fieldCount */);
+    }
+
+    @Test @IgnoreUpTo(Build.VERSION_CODES.Q)
+    public void testLinkPropertiesParcelable() throws Exception {
+        final LinkProperties source = makeLinkPropertiesForParceling();
+
+        source.setWakeOnLanSupported(true);
+        source.setCaptivePortalApiUrl(CAPPORT_API_URL);
+        source.setCaptivePortalData((CaptivePortalData) getCaptivePortalData());
+        source.setDhcpServerAddress((Inet4Address) GATEWAY1);
+        assertParcelSane(new LinkProperties(source, true /* parcelSensitiveFields */),
+                18 /* fieldCount */);
+
+        // Verify that without using a sensitiveFieldsParcelingCopy, sensitive fields are cleared.
+        final LinkProperties sanitized = new LinkProperties(source);
+        sanitized.setCaptivePortalApiUrl(null);
+        sanitized.setCaptivePortalData(null);
+        assertEquals(sanitized, parcelingRoundTrip(source));
+    }
+
+    // Parceling of the scope was broken until Q-QPR2
+    @Test @IgnoreUpTo(Build.VERSION_CODES.Q)
+    public void testLinkLocalDnsServerParceling() throws Exception {
+        final String strAddress = "fe80::1%lo";
+        final LinkProperties lp = new LinkProperties();
+        lp.addDnsServer(address(strAddress));
+        final LinkProperties unparceled = parcelingRoundTrip(lp);
+        // Inet6Address#equals does not test for the scope id
+        assertEquals(strAddress, unparceled.getDnsServers().get(0).getHostAddress());
+    }
+
+    @Test
+    public void testParcelUninitialized() throws Exception {
+        LinkProperties empty = new LinkProperties();
+        assertParcelingIsLossless(empty);
+    }
+
+    @Test
+    public void testConstructor() {
+        LinkProperties lp = new LinkProperties();
+        checkEmpty(lp);
+        assertLinkPropertiesEqual(lp, new LinkProperties(lp));
+        assertLinkPropertiesEqual(lp, new LinkProperties());
+
+        lp = makeTestObject();
+        assertLinkPropertiesEqual(lp, new LinkProperties(lp));
+    }
+
+    @Test
+    public void testDnsServers() {
+        final LinkProperties lp = new LinkProperties();
+        final List<InetAddress> dnsServers = Arrays.asList(DNS1, DNS2);
+        lp.setDnsServers(dnsServers);
+        assertEquals(2, lp.getDnsServers().size());
+        assertEquals(DNS1, lp.getDnsServers().get(0));
+        assertEquals(DNS2, lp.getDnsServers().get(1));
+
+        lp.removeDnsServer(DNS1);
+        assertEquals(1, lp.getDnsServers().size());
+        assertEquals(DNS2, lp.getDnsServers().get(0));
+
+        lp.addDnsServer(DNS6);
+        assertEquals(2, lp.getDnsServers().size());
+        assertEquals(DNS2, lp.getDnsServers().get(0));
+        assertEquals(DNS6, lp.getDnsServers().get(1));
+    }
+
+    @Test
+    public void testValidatedPrivateDnsServers() {
+        final LinkProperties lp = new LinkProperties();
+        final List<InetAddress> privDnsServers = Arrays.asList(PRIVDNS1, PRIVDNS2);
+        lp.setValidatedPrivateDnsServers(privDnsServers);
+        assertEquals(2, lp.getValidatedPrivateDnsServers().size());
+        assertEquals(PRIVDNS1, lp.getValidatedPrivateDnsServers().get(0));
+        assertEquals(PRIVDNS2, lp.getValidatedPrivateDnsServers().get(1));
+
+        lp.removeValidatedPrivateDnsServer(PRIVDNS1);
+        assertEquals(1, lp.getValidatedPrivateDnsServers().size());
+        assertEquals(PRIVDNS2, lp.getValidatedPrivateDnsServers().get(0));
+
+        lp.addValidatedPrivateDnsServer(PRIVDNS6);
+        assertEquals(2, lp.getValidatedPrivateDnsServers().size());
+        assertEquals(PRIVDNS2, lp.getValidatedPrivateDnsServers().get(0));
+        assertEquals(PRIVDNS6, lp.getValidatedPrivateDnsServers().get(1));
+    }
+
+    @Test
+    public void testPcscfServers() {
+        final LinkProperties lp = new LinkProperties();
+        final List<InetAddress> pcscfServers = Arrays.asList(PCSCFV4);
+        lp.setPcscfServers(pcscfServers);
+        assertEquals(1, lp.getPcscfServers().size());
+        assertEquals(PCSCFV4, lp.getPcscfServers().get(0));
+
+        lp.removePcscfServer(PCSCFV4);
+        assertEquals(0, lp.getPcscfServers().size());
+
+        lp.addPcscfServer(PCSCFV6);
+        assertEquals(1, lp.getPcscfServers().size());
+        assertEquals(PCSCFV6, lp.getPcscfServers().get(0));
+    }
+
+    @Test
+    public void testTcpBufferSizes() {
+        final LinkProperties lp = makeTestObject();
+        assertEquals(TCP_BUFFER_SIZES, lp.getTcpBufferSizes());
+
+        lp.setTcpBufferSizes(null);
+        assertNull(lp.getTcpBufferSizes());
+    }
+
+    @Test
+    public void testHasIpv6DefaultRoute() {
+        final LinkProperties lp = makeTestObject();
+        assertFalse(lp.hasIPv6DefaultRoute());
+
+        lp.addRoute(new RouteInfo(GATEWAY61));
+        assertTrue(lp.hasIPv6DefaultRoute());
+    }
+
+    @Test
+    public void testHttpProxy() {
+        final LinkProperties lp = makeTestObject();
+        assertTrue(lp.getHttpProxy().equals(ProxyInfo.buildDirectProxy("test", 8888)));
+    }
+
+    @Test
+    public void testPrivateDnsServerName() {
+        final LinkProperties lp = makeTestObject();
+        assertEquals(PRIV_DNS_SERVER_NAME, lp.getPrivateDnsServerName());
+
+        lp.setPrivateDnsServerName(null);
+        assertNull(lp.getPrivateDnsServerName());
+    }
+
+    @Test
+    public void testUsePrivateDns() {
+        final LinkProperties lp = makeTestObject();
+        assertTrue(lp.isPrivateDnsActive());
+
+        lp.clear();
+        assertFalse(lp.isPrivateDnsActive());
+    }
+
+    @Test @IgnoreUpTo(Build.VERSION_CODES.Q)
+    public void testDhcpServerAddress() {
+        final LinkProperties lp = makeTestObject();
+        assertEquals(DHCPSERVER, lp.getDhcpServerAddress());
+
+        lp.clear();
+        assertNull(lp.getDhcpServerAddress());
+    }
+
+    @Test @IgnoreUpTo(Build.VERSION_CODES.Q)
+    public void testWakeOnLanSupported() {
+        final LinkProperties lp = makeTestObject();
+        assertTrue(lp.isWakeOnLanSupported());
+
+        lp.clear();
+        assertFalse(lp.isWakeOnLanSupported());
+    }
+
+    @Test @IgnoreUpTo(Build.VERSION_CODES.Q)
+    public void testCaptivePortalApiUrl() {
+        final LinkProperties lp = makeTestObject();
+        assertEquals(CAPPORT_API_URL, lp.getCaptivePortalApiUrl());
+
+        lp.clear();
+        assertNull(lp.getCaptivePortalApiUrl());
+    }
+
+    @Test @IgnoreUpTo(Build.VERSION_CODES.Q)
+    public void testCaptivePortalData() {
+        final LinkProperties lp = makeTestObject();
+        assertEquals(getCaptivePortalData(), lp.getCaptivePortalData());
+
+        lp.clear();
+        assertNull(lp.getCaptivePortalData());
+    }
+
+    private LinkProperties makeIpv4LinkProperties() {
+        final LinkProperties linkProperties = new LinkProperties();
+        linkProperties.setInterfaceName(NAME);
+        linkProperties.addLinkAddress(LINKADDRV4);
+        linkProperties.addDnsServer(DNS1);
+        linkProperties.addRoute(new RouteInfo(GATEWAY1));
+        linkProperties.addRoute(new RouteInfo(GATEWAY2));
+        return linkProperties;
+    }
+
+    private LinkProperties makeIpv6LinkProperties() {
+        final LinkProperties linkProperties = new LinkProperties();
+        linkProperties.setInterfaceName(NAME);
+        linkProperties.addLinkAddress(LINKADDRV6);
+        linkProperties.addDnsServer(DNS6);
+        linkProperties.addRoute(new RouteInfo(GATEWAY61));
+        linkProperties.addRoute(new RouteInfo(GATEWAY62));
+        return linkProperties;
+    }
+
+    @Test
+    public void testHasIpv4DefaultRoute() {
+        final LinkProperties Ipv4 = makeIpv4LinkProperties();
+        assertTrue(Ipv4.hasIpv4DefaultRoute());
+        final LinkProperties Ipv6 = makeIpv6LinkProperties();
+        assertFalse(Ipv6.hasIpv4DefaultRoute());
+    }
+
+    @Test
+    public void testHasIpv4DnsServer() {
+        final LinkProperties Ipv4 = makeIpv4LinkProperties();
+        assertTrue(Ipv4.hasIpv4DnsServer());
+        final LinkProperties Ipv6 = makeIpv6LinkProperties();
+        assertFalse(Ipv6.hasIpv4DnsServer());
+    }
+
+    @Test
+    public void testHasIpv6DnsServer() {
+        final LinkProperties Ipv4 = makeIpv4LinkProperties();
+        assertFalse(Ipv4.hasIpv6DnsServer());
+        final LinkProperties Ipv6 = makeIpv6LinkProperties();
+        assertTrue(Ipv6.hasIpv6DnsServer());
+    }
+
+    @Test @IgnoreUpTo(Build.VERSION_CODES.Q)
+    public void testHasIpv4UnreachableDefaultRoute() {
+        final LinkProperties lp = makeTestObject();
+        assertFalse(lp.hasIpv4UnreachableDefaultRoute());
+        assertFalse(lp.hasIpv6UnreachableDefaultRoute());
+
+        lp.addRoute(new RouteInfo(new IpPrefix(Inet4Address.ANY, 0), RTN_UNREACHABLE));
+        assertTrue(lp.hasIpv4UnreachableDefaultRoute());
+        assertFalse(lp.hasIpv6UnreachableDefaultRoute());
+    }
+
+    @Test @IgnoreUpTo(Build.VERSION_CODES.Q)
+    public void testHasIpv6UnreachableDefaultRoute() {
+        final LinkProperties lp = makeTestObject();
+        assertFalse(lp.hasIpv6UnreachableDefaultRoute());
+        assertFalse(lp.hasIpv4UnreachableDefaultRoute());
+
+        lp.addRoute(new RouteInfo(new IpPrefix(Inet6Address.ANY, 0), RTN_UNREACHABLE));
+        assertTrue(lp.hasIpv6UnreachableDefaultRoute());
+        assertFalse(lp.hasIpv4UnreachableDefaultRoute());
+    }
+
+    @Test @IgnoreUpTo(Build.VERSION_CODES.Q)
+    public void testRouteAddWithSameKey() throws Exception {
+        LinkProperties lp = new LinkProperties();
+        lp.setInterfaceName("wlan0");
+        final IpPrefix v6 = new IpPrefix("64:ff9b::/96");
+        lp.addRoute(new RouteInfo(v6, address("fe80::1"), "wlan0", RTN_UNICAST, 1280));
+        assertEquals(1, lp.getRoutes().size());
+        lp.addRoute(new RouteInfo(v6, address("fe80::1"), "wlan0", RTN_UNICAST, 1500));
+        assertEquals(1, lp.getRoutes().size());
+        final IpPrefix v4 = new IpPrefix("192.0.2.128/25");
+        lp.addRoute(new RouteInfo(v4, address("192.0.2.1"), "wlan0", RTN_UNICAST, 1460));
+        assertEquals(2, lp.getRoutes().size());
+        lp.addRoute(new RouteInfo(v4, address("192.0.2.1"), "wlan0", RTN_THROW, 1460));
+        assertEquals(2, lp.getRoutes().size());
+    }
+}
diff --git a/tests/common/java/android/net/MatchAllNetworkSpecifierTest.kt b/tests/common/java/android/net/MatchAllNetworkSpecifierTest.kt
new file mode 100644
index 0000000..a5e44d5
--- /dev/null
+++ b/tests/common/java/android/net/MatchAllNetworkSpecifierTest.kt
@@ -0,0 +1,75 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.net
+
+import android.net.wifi.aware.DiscoverySession
+import android.net.wifi.aware.PeerHandle
+import android.net.wifi.aware.WifiAwareNetworkSpecifier
+import android.os.Build
+import androidx.test.filters.SmallTest
+import androidx.test.runner.AndroidJUnit4
+
+import com.android.testutils.assertParcelSane
+import com.android.testutils.DevSdkIgnoreRule
+import com.android.testutils.DevSdkIgnoreRule.IgnoreAfter
+import com.android.testutils.DevSdkIgnoreRule.IgnoreUpTo
+
+import java.lang.IllegalStateException
+
+import org.junit.Assert.assertFalse
+import org.junit.Rule
+import org.junit.Test
+import org.junit.runner.RunWith
+import org.mockito.Mockito
+
+@RunWith(AndroidJUnit4::class)
+@SmallTest
+class MatchAllNetworkSpecifierTest {
+    @Rule @JvmField
+    val ignoreRule: DevSdkIgnoreRule = DevSdkIgnoreRule()
+
+    private val specifier = MatchAllNetworkSpecifier()
+    private val discoverySession = Mockito.mock(DiscoverySession::class.java)
+    private val peerHandle = Mockito.mock(PeerHandle::class.java)
+    private val wifiAwareNetworkSpecifier = WifiAwareNetworkSpecifier.Builder(discoverySession,
+            peerHandle).build()
+
+    @Test
+    fun testParcel() {
+        assertParcelSane(MatchAllNetworkSpecifier(), 0)
+    }
+
+    @Test
+    @IgnoreUpTo(Build.VERSION_CODES.Q)
+    @IgnoreAfter(Build.VERSION_CODES.R)
+    // Only run this test on Android R.
+    // The method - satisfiedBy() has changed to canBeSatisfiedBy() starting from Android R, so the
+    // method - canBeSatisfiedBy() cannot be found when running this test on Android Q.
+    fun testCanBeSatisfiedBy_OnlyForR() {
+        // MatchAllNetworkSpecifier didn't follow its parent class to change the satisfiedBy() to
+        // canBeSatisfiedBy(), so if a caller calls MatchAllNetworkSpecifier#canBeSatisfiedBy(), the
+        // NetworkSpecifier#canBeSatisfiedBy() will be called actually, and false will be returned.
+        // Although it's not meeting the expectation, the behavior still needs to be verified.
+        assertFalse(specifier.canBeSatisfiedBy(wifiAwareNetworkSpecifier))
+    }
+
+    @Test(expected = IllegalStateException::class)
+    @IgnoreUpTo(Build.VERSION_CODES.R)
+    fun testCanBeSatisfiedBy() {
+        specifier.canBeSatisfiedBy(wifiAwareNetworkSpecifier)
+    }
+}
diff --git a/tests/common/java/android/net/NattKeepalivePacketDataTest.kt b/tests/common/java/android/net/NattKeepalivePacketDataTest.kt
new file mode 100644
index 0000000..46f39dd
--- /dev/null
+++ b/tests/common/java/android/net/NattKeepalivePacketDataTest.kt
@@ -0,0 +1,114 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.net
+
+import android.net.InvalidPacketException.ERROR_INVALID_IP_ADDRESS
+import android.net.InvalidPacketException.ERROR_INVALID_PORT
+import android.net.NattSocketKeepalive.NATT_PORT
+import android.os.Build
+import androidx.test.filters.SmallTest
+import androidx.test.runner.AndroidJUnit4
+import com.android.testutils.assertEqualBothWays
+import com.android.testutils.assertFieldCountEquals
+import com.android.testutils.assertParcelSane
+import com.android.testutils.DevSdkIgnoreRule
+import com.android.testutils.DevSdkIgnoreRule.IgnoreUpTo
+import com.android.testutils.parcelingRoundTrip
+import java.net.InetAddress
+import org.junit.Assert.assertEquals
+import org.junit.Assert.assertNotEquals
+import org.junit.Assert.fail
+import org.junit.Rule
+import org.junit.Test
+import org.junit.runner.RunWith
+
+@RunWith(AndroidJUnit4::class)
+@SmallTest
+class NattKeepalivePacketDataTest {
+    @Rule @JvmField
+    val ignoreRule: DevSdkIgnoreRule = DevSdkIgnoreRule()
+
+    /* Refer to the definition in {@code NattKeepalivePacketData} */
+    private val IPV4_HEADER_LENGTH = 20
+    private val UDP_HEADER_LENGTH = 8
+
+    private val TEST_PORT = 4243
+    private val TEST_PORT2 = 4244
+    private val TEST_SRC_ADDRV4 = "198.168.0.2".address()
+    private val TEST_DST_ADDRV4 = "198.168.0.1".address()
+    private val TEST_ADDRV6 = "2001:db8::1".address()
+
+    private fun String.address() = InetAddresses.parseNumericAddress(this)
+    private fun nattKeepalivePacket(
+        srcAddress: InetAddress? = TEST_SRC_ADDRV4,
+        srcPort: Int = TEST_PORT,
+        dstAddress: InetAddress? = TEST_DST_ADDRV4,
+        dstPort: Int = NATT_PORT
+    ) = NattKeepalivePacketData.nattKeepalivePacket(srcAddress, srcPort, dstAddress, dstPort)
+
+    @Test @IgnoreUpTo(Build.VERSION_CODES.Q)
+    fun testConstructor() {
+        try {
+            nattKeepalivePacket(dstPort = TEST_PORT)
+            fail("Dst port is not NATT port should cause exception")
+        } catch (e: InvalidPacketException) {
+            assertEquals(e.error, ERROR_INVALID_PORT)
+        }
+
+        try {
+            nattKeepalivePacket(srcAddress = TEST_ADDRV6)
+            fail("A v6 srcAddress should cause exception")
+        } catch (e: InvalidPacketException) {
+            assertEquals(e.error, ERROR_INVALID_IP_ADDRESS)
+        }
+
+        try {
+            nattKeepalivePacket(dstAddress = TEST_ADDRV6)
+            fail("A v6 dstAddress should cause exception")
+        } catch (e: InvalidPacketException) {
+            assertEquals(e.error, ERROR_INVALID_IP_ADDRESS)
+        }
+
+        try {
+            parcelingRoundTrip(
+                    NattKeepalivePacketData(TEST_SRC_ADDRV4, TEST_PORT, TEST_DST_ADDRV4, TEST_PORT,
+                    byteArrayOf(12, 31, 22, 44)))
+            fail("Invalid data should cause exception")
+        } catch (e: IllegalArgumentException) { }
+    }
+
+    @Test @IgnoreUpTo(Build.VERSION_CODES.Q)
+    fun testParcel() {
+        assertParcelSane(nattKeepalivePacket(), 0)
+    }
+
+    @Test @IgnoreUpTo(Build.VERSION_CODES.Q)
+    fun testEquals() {
+        assertEqualBothWays(nattKeepalivePacket(), nattKeepalivePacket())
+        assertNotEquals(nattKeepalivePacket(dstAddress = TEST_SRC_ADDRV4), nattKeepalivePacket())
+        assertNotEquals(nattKeepalivePacket(srcAddress = TEST_DST_ADDRV4), nattKeepalivePacket())
+        // Test src port only because dst port have to be NATT_PORT
+        assertNotEquals(nattKeepalivePacket(srcPort = TEST_PORT2), nattKeepalivePacket())
+        // Make sure the parceling test is updated if fields are added in the base class.
+        assertFieldCountEquals(5, KeepalivePacketData::class.java)
+    }
+
+    @Test @IgnoreUpTo(Build.VERSION_CODES.Q)
+    fun testHashCode() {
+        assertEquals(nattKeepalivePacket().hashCode(), nattKeepalivePacket().hashCode())
+    }
+}
\ No newline at end of file
diff --git a/tests/common/java/android/net/NetworkAgentConfigTest.kt b/tests/common/java/android/net/NetworkAgentConfigTest.kt
new file mode 100644
index 0000000..2b45b3d
--- /dev/null
+++ b/tests/common/java/android/net/NetworkAgentConfigTest.kt
@@ -0,0 +1,91 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.net
+
+import android.os.Build
+import androidx.test.filters.SmallTest
+import androidx.test.runner.AndroidJUnit4
+import com.android.modules.utils.build.SdkLevel.isAtLeastS
+import com.android.testutils.DevSdkIgnoreRule
+import com.android.testutils.DevSdkIgnoreRule.IgnoreUpTo
+import com.android.testutils.assertParcelSane
+import org.junit.Assert.assertEquals
+import org.junit.Assert.assertFalse
+import org.junit.Assert.assertTrue
+import org.junit.Rule
+import org.junit.Test
+import org.junit.runner.RunWith
+
+@RunWith(AndroidJUnit4::class)
+@SmallTest
+class NetworkAgentConfigTest {
+    @Rule @JvmField
+    val ignoreRule = DevSdkIgnoreRule()
+
+    @Test @IgnoreUpTo(Build.VERSION_CODES.Q)
+    fun testParcelNetworkAgentConfig() {
+        val config = NetworkAgentConfig.Builder().apply {
+            setExplicitlySelected(true)
+            setLegacyType(ConnectivityManager.TYPE_ETHERNET)
+            setSubscriberId("MySubId")
+            setPartialConnectivityAcceptable(false)
+            setUnvalidatedConnectivityAcceptable(true)
+            if (isAtLeastS()) {
+                setBypassableVpn(true)
+            }
+        }.build()
+        if (isAtLeastS()) {
+            // From S, the config will have 12 items
+            assertParcelSane(config, 12)
+        } else {
+            // For R or below, the config will have 10 items
+            assertParcelSane(config, 10)
+        }
+    }
+
+    @Test @IgnoreUpTo(Build.VERSION_CODES.Q)
+    fun testBuilder() {
+        val config = NetworkAgentConfig.Builder().apply {
+            setExplicitlySelected(true)
+            setLegacyType(ConnectivityManager.TYPE_ETHERNET)
+            setSubscriberId("MySubId")
+            setPartialConnectivityAcceptable(false)
+            setUnvalidatedConnectivityAcceptable(true)
+            setLegacyTypeName("TEST_NETWORK")
+            if (isAtLeastS()) {
+                setNat64DetectionEnabled(false)
+                setProvisioningNotificationEnabled(false)
+                setBypassableVpn(true)
+            }
+        }.build()
+
+        assertTrue(config.isExplicitlySelected())
+        assertEquals(ConnectivityManager.TYPE_ETHERNET, config.getLegacyType())
+        assertEquals("MySubId", config.getSubscriberId())
+        assertFalse(config.isPartialConnectivityAcceptable())
+        assertTrue(config.isUnvalidatedConnectivityAcceptable())
+        assertEquals("TEST_NETWORK", config.getLegacyTypeName())
+        if (isAtLeastS()) {
+            assertFalse(config.isNat64DetectionEnabled())
+            assertFalse(config.isProvisioningNotificationEnabled())
+            assertTrue(config.isBypassableVpn())
+        } else {
+            assertTrue(config.isNat64DetectionEnabled())
+            assertTrue(config.isProvisioningNotificationEnabled())
+        }
+    }
+}
diff --git a/tests/common/java/android/net/NetworkCapabilitiesTest.java b/tests/common/java/android/net/NetworkCapabilitiesTest.java
new file mode 100644
index 0000000..9efdde4
--- /dev/null
+++ b/tests/common/java/android/net/NetworkCapabilitiesTest.java
@@ -0,0 +1,1158 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.net;
+
+import static android.net.NetworkCapabilities.LINK_BANDWIDTH_UNSPECIFIED;
+import static android.net.NetworkCapabilities.MAX_TRANSPORT;
+import static android.net.NetworkCapabilities.MIN_TRANSPORT;
+import static android.net.NetworkCapabilities.NET_CAPABILITY_CAPTIVE_PORTAL;
+import static android.net.NetworkCapabilities.NET_CAPABILITY_CBS;
+import static android.net.NetworkCapabilities.NET_CAPABILITY_EIMS;
+import static android.net.NetworkCapabilities.NET_CAPABILITY_FOREGROUND;
+import static android.net.NetworkCapabilities.NET_CAPABILITY_INTERNET;
+import static android.net.NetworkCapabilities.NET_CAPABILITY_MMS;
+import static android.net.NetworkCapabilities.NET_CAPABILITY_NOT_METERED;
+import static android.net.NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED;
+import static android.net.NetworkCapabilities.NET_CAPABILITY_NOT_ROAMING;
+import static android.net.NetworkCapabilities.NET_CAPABILITY_NOT_VCN_MANAGED;
+import static android.net.NetworkCapabilities.NET_CAPABILITY_NOT_VPN;
+import static android.net.NetworkCapabilities.NET_CAPABILITY_OEM_PAID;
+import static android.net.NetworkCapabilities.NET_CAPABILITY_OEM_PRIVATE;
+import static android.net.NetworkCapabilities.NET_CAPABILITY_PARTIAL_CONNECTIVITY;
+import static android.net.NetworkCapabilities.NET_CAPABILITY_VALIDATED;
+import static android.net.NetworkCapabilities.NET_CAPABILITY_WIFI_P2P;
+import static android.net.NetworkCapabilities.REDACT_FOR_ACCESS_FINE_LOCATION;
+import static android.net.NetworkCapabilities.REDACT_FOR_LOCAL_MAC_ADDRESS;
+import static android.net.NetworkCapabilities.REDACT_FOR_NETWORK_SETTINGS;
+import static android.net.NetworkCapabilities.SIGNAL_STRENGTH_UNSPECIFIED;
+import static android.net.NetworkCapabilities.TRANSPORT_CELLULAR;
+import static android.net.NetworkCapabilities.TRANSPORT_TEST;
+import static android.net.NetworkCapabilities.TRANSPORT_VPN;
+import static android.net.NetworkCapabilities.TRANSPORT_WIFI;
+import static android.net.NetworkCapabilities.TRANSPORT_WIFI_AWARE;
+import static android.os.Process.INVALID_UID;
+
+import static com.android.modules.utils.build.SdkLevel.isAtLeastR;
+import static com.android.modules.utils.build.SdkLevel.isAtLeastS;
+import static com.android.net.module.util.NetworkCapabilitiesUtils.TRANSPORT_USB;
+import static com.android.testutils.MiscAsserts.assertEmpty;
+import static com.android.testutils.MiscAsserts.assertThrows;
+import static com.android.testutils.ParcelUtils.assertParcelSane;
+import static com.android.testutils.ParcelUtils.assertParcelingIsLossless;
+
+import static org.junit.Assert.assertArrayEquals;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertNotEquals;
+import static org.junit.Assert.assertNull;
+import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.fail;
+import static org.junit.Assume.assumeTrue;
+
+import android.net.wifi.aware.DiscoverySession;
+import android.net.wifi.aware.PeerHandle;
+import android.net.wifi.aware.WifiAwareNetworkSpecifier;
+import android.os.Build;
+import android.test.suitebuilder.annotation.SmallTest;
+import android.util.ArraySet;
+import android.util.Range;
+
+import androidx.test.runner.AndroidJUnit4;
+
+import com.android.testutils.CompatUtil;
+import com.android.testutils.DevSdkIgnoreRule;
+import com.android.testutils.DevSdkIgnoreRule.IgnoreUpTo;
+
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mockito;
+
+import java.util.Arrays;
+import java.util.Set;
+
+@RunWith(AndroidJUnit4.class)
+@SmallTest
+public class NetworkCapabilitiesTest {
+    private static final String TEST_SSID = "TEST_SSID";
+    private static final String DIFFERENT_TEST_SSID = "DIFFERENT_TEST_SSID";
+    private static final int TEST_SUBID1 = 1;
+    private static final int TEST_SUBID2 = 2;
+    private static final int TEST_SUBID3 = 3;
+
+    @Rule
+    public DevSdkIgnoreRule mDevSdkIgnoreRule = new DevSdkIgnoreRule();
+
+    private DiscoverySession mDiscoverySession = Mockito.mock(DiscoverySession.class);
+    private PeerHandle mPeerHandle = Mockito.mock(PeerHandle.class);
+
+    @Test
+    public void testMaybeMarkCapabilitiesRestricted() {
+        // check that internet does not get restricted
+        NetworkCapabilities netCap = new NetworkCapabilities();
+        netCap.addCapability(NET_CAPABILITY_INTERNET);
+        netCap.maybeMarkCapabilitiesRestricted();
+        assertTrue(netCap.hasCapability(NET_CAPABILITY_NOT_RESTRICTED));
+
+        // metered-ness shouldn't matter
+        netCap = new NetworkCapabilities();
+        netCap.addCapability(NET_CAPABILITY_INTERNET);
+        netCap.addCapability(NET_CAPABILITY_NOT_METERED);
+        netCap.maybeMarkCapabilitiesRestricted();
+        assertTrue(netCap.hasCapability(NET_CAPABILITY_NOT_RESTRICTED));
+        netCap = new NetworkCapabilities();
+        netCap.addCapability(NET_CAPABILITY_INTERNET);
+        netCap.removeCapability(NET_CAPABILITY_NOT_METERED);
+        netCap.maybeMarkCapabilitiesRestricted();
+        assertTrue(netCap.hasCapability(NET_CAPABILITY_NOT_RESTRICTED));
+
+        // add EIMS - bundled with unrestricted means it's unrestricted
+        netCap = new NetworkCapabilities();
+        netCap.addCapability(NET_CAPABILITY_INTERNET);
+        netCap.addCapability(NET_CAPABILITY_EIMS);
+        netCap.addCapability(NET_CAPABILITY_NOT_METERED);
+        netCap.maybeMarkCapabilitiesRestricted();
+        assertTrue(netCap.hasCapability(NET_CAPABILITY_NOT_RESTRICTED));
+        netCap = new NetworkCapabilities();
+        netCap.addCapability(NET_CAPABILITY_INTERNET);
+        netCap.addCapability(NET_CAPABILITY_EIMS);
+        netCap.removeCapability(NET_CAPABILITY_NOT_METERED);
+        netCap.maybeMarkCapabilitiesRestricted();
+        assertTrue(netCap.hasCapability(NET_CAPABILITY_NOT_RESTRICTED));
+
+        // just a restricted cap should be restricted regardless of meteredness
+        netCap = new NetworkCapabilities();
+        netCap.addCapability(NET_CAPABILITY_EIMS);
+        netCap.addCapability(NET_CAPABILITY_NOT_METERED);
+        netCap.maybeMarkCapabilitiesRestricted();
+        assertFalse(netCap.hasCapability(NET_CAPABILITY_NOT_RESTRICTED));
+        netCap = new NetworkCapabilities();
+        netCap.addCapability(NET_CAPABILITY_EIMS);
+        netCap.removeCapability(NET_CAPABILITY_NOT_METERED);
+        netCap.maybeMarkCapabilitiesRestricted();
+        assertFalse(netCap.hasCapability(NET_CAPABILITY_NOT_RESTRICTED));
+
+        // try 2 restricted caps
+        netCap = new NetworkCapabilities();
+        netCap.addCapability(NET_CAPABILITY_CBS);
+        netCap.addCapability(NET_CAPABILITY_EIMS);
+        netCap.addCapability(NET_CAPABILITY_NOT_METERED);
+        netCap.maybeMarkCapabilitiesRestricted();
+        assertFalse(netCap.hasCapability(NET_CAPABILITY_NOT_RESTRICTED));
+        netCap = new NetworkCapabilities();
+        netCap.addCapability(NET_CAPABILITY_CBS);
+        netCap.addCapability(NET_CAPABILITY_EIMS);
+        netCap.removeCapability(NET_CAPABILITY_NOT_METERED);
+        netCap.maybeMarkCapabilitiesRestricted();
+        assertFalse(netCap.hasCapability(NET_CAPABILITY_NOT_RESTRICTED));
+    }
+
+    @Test
+    public void testDescribeImmutableDifferences() {
+        NetworkCapabilities nc1;
+        NetworkCapabilities nc2;
+
+        // Transports changing
+        nc1 = new NetworkCapabilities().addTransportType(TRANSPORT_CELLULAR);
+        nc2 = new NetworkCapabilities().addTransportType(TRANSPORT_WIFI);
+        assertNotEquals("", nc1.describeImmutableDifferences(nc2));
+        assertEquals("", nc1.describeImmutableDifferences(nc1));
+
+        // Mutable capability changing
+        nc1 = new NetworkCapabilities().addCapability(NET_CAPABILITY_VALIDATED);
+        nc2 = new NetworkCapabilities();
+        assertEquals("", nc1.describeImmutableDifferences(nc2));
+        assertEquals("", nc1.describeImmutableDifferences(nc1));
+
+        // NOT_METERED changing (http://b/63326103)
+        nc1 = new NetworkCapabilities()
+                .addCapability(NET_CAPABILITY_NOT_METERED)
+                .addCapability(NET_CAPABILITY_INTERNET);
+        nc2 = new NetworkCapabilities().addCapability(NET_CAPABILITY_INTERNET);
+        assertEquals("", nc1.describeImmutableDifferences(nc2));
+        assertEquals("", nc1.describeImmutableDifferences(nc1));
+
+        // Immutable capability changing
+        nc1 = new NetworkCapabilities()
+                .addCapability(NET_CAPABILITY_INTERNET)
+                .removeCapability(NET_CAPABILITY_NOT_RESTRICTED);
+        nc2 = new NetworkCapabilities().addCapability(NET_CAPABILITY_INTERNET);
+        assertNotEquals("", nc1.describeImmutableDifferences(nc2));
+        assertEquals("", nc1.describeImmutableDifferences(nc1));
+
+        // Specifier changing
+        nc1 = new NetworkCapabilities().addTransportType(TRANSPORT_WIFI);
+        nc2 = new NetworkCapabilities()
+                .addTransportType(TRANSPORT_WIFI)
+                .setNetworkSpecifier(CompatUtil.makeEthernetNetworkSpecifier("eth42"));
+        assertNotEquals("", nc1.describeImmutableDifferences(nc2));
+        assertEquals("", nc1.describeImmutableDifferences(nc1));
+    }
+
+    @Test
+    public void testLinkBandwidthUtils() {
+        assertEquals(LINK_BANDWIDTH_UNSPECIFIED, NetworkCapabilities
+                .minBandwidth(LINK_BANDWIDTH_UNSPECIFIED, LINK_BANDWIDTH_UNSPECIFIED));
+        assertEquals(10, NetworkCapabilities
+                .minBandwidth(LINK_BANDWIDTH_UNSPECIFIED, 10));
+        assertEquals(10, NetworkCapabilities
+                .minBandwidth(10, LINK_BANDWIDTH_UNSPECIFIED));
+        assertEquals(10, NetworkCapabilities
+                .minBandwidth(10, 20));
+
+        assertEquals(LINK_BANDWIDTH_UNSPECIFIED, NetworkCapabilities
+                .maxBandwidth(LINK_BANDWIDTH_UNSPECIFIED, LINK_BANDWIDTH_UNSPECIFIED));
+        assertEquals(10, NetworkCapabilities
+                .maxBandwidth(LINK_BANDWIDTH_UNSPECIFIED, 10));
+        assertEquals(10, NetworkCapabilities
+                .maxBandwidth(10, LINK_BANDWIDTH_UNSPECIFIED));
+        assertEquals(20, NetworkCapabilities
+                .maxBandwidth(10, 20));
+    }
+
+    @Test
+    public void testSetUids() {
+        final NetworkCapabilities netCap = new NetworkCapabilities();
+        // Null uids match all UIDs
+        netCap.setUids(null);
+        assertTrue(netCap.appliesToUid(10));
+        assertTrue(netCap.appliesToUid(200));
+        assertTrue(netCap.appliesToUid(3000));
+        assertTrue(netCap.appliesToUid(10010));
+        assertTrue(netCap.appliesToUidRange(new UidRange(50, 100)));
+        assertTrue(netCap.appliesToUidRange(new UidRange(70, 72)));
+        assertTrue(netCap.appliesToUidRange(new UidRange(3500, 3912)));
+        assertTrue(netCap.appliesToUidRange(new UidRange(1, 100000)));
+
+        if (isAtLeastS()) {
+            final Set<Range<Integer>> uids = new ArraySet<>();
+            uids.add(uidRange(50, 100));
+            uids.add(uidRange(3000, 4000));
+            netCap.setUids(uids);
+            assertTrue(netCap.appliesToUid(50));
+            assertTrue(netCap.appliesToUid(80));
+            assertTrue(netCap.appliesToUid(100));
+            assertTrue(netCap.appliesToUid(3000));
+            assertTrue(netCap.appliesToUid(3001));
+            assertFalse(netCap.appliesToUid(10));
+            assertFalse(netCap.appliesToUid(25));
+            assertFalse(netCap.appliesToUid(49));
+            assertFalse(netCap.appliesToUid(101));
+            assertFalse(netCap.appliesToUid(2000));
+            assertFalse(netCap.appliesToUid(100000));
+
+            assertTrue(netCap.appliesToUidRange(new UidRange(50, 100)));
+            assertTrue(netCap.appliesToUidRange(new UidRange(70, 72)));
+            assertTrue(netCap.appliesToUidRange(new UidRange(3500, 3912)));
+            assertFalse(netCap.appliesToUidRange(new UidRange(1, 100)));
+            assertFalse(netCap.appliesToUidRange(new UidRange(49, 100)));
+            assertFalse(netCap.appliesToUidRange(new UidRange(1, 10)));
+            assertFalse(netCap.appliesToUidRange(new UidRange(60, 101)));
+            assertFalse(netCap.appliesToUidRange(new UidRange(60, 3400)));
+
+            NetworkCapabilities netCap2 = new NetworkCapabilities();
+            // A new netcap object has null UIDs, so anything will satisfy it.
+            assertTrue(netCap2.satisfiedByUids(netCap));
+            // Still not equal though.
+            assertFalse(netCap2.equalsUids(netCap));
+            netCap2.setUids(uids);
+            assertTrue(netCap2.satisfiedByUids(netCap));
+            assertTrue(netCap.equalsUids(netCap2));
+            assertTrue(netCap2.equalsUids(netCap));
+
+            uids.add(uidRange(600, 700));
+            netCap2.setUids(uids);
+            assertFalse(netCap2.satisfiedByUids(netCap));
+            assertFalse(netCap.appliesToUid(650));
+            assertTrue(netCap2.appliesToUid(650));
+            netCap.combineCapabilities(netCap2);
+            assertTrue(netCap2.satisfiedByUids(netCap));
+            assertTrue(netCap.appliesToUid(650));
+            assertFalse(netCap.appliesToUid(500));
+
+            assertTrue(new NetworkCapabilities().satisfiedByUids(netCap));
+            netCap.combineCapabilities(new NetworkCapabilities());
+            assertTrue(netCap.appliesToUid(500));
+            assertTrue(netCap.appliesToUidRange(new UidRange(1, 100000)));
+            assertFalse(netCap2.appliesToUid(500));
+            assertFalse(netCap2.appliesToUidRange(new UidRange(1, 100000)));
+            assertTrue(new NetworkCapabilities().satisfiedByUids(netCap));
+
+            // Null uids satisfies everything.
+            netCap.setUids(null);
+            assertTrue(netCap2.satisfiedByUids(netCap));
+            assertTrue(netCap.satisfiedByUids(netCap2));
+            netCap2.setUids(null);
+            assertTrue(netCap2.satisfiedByUids(netCap));
+            assertTrue(netCap.satisfiedByUids(netCap2));
+        }
+    }
+
+    @Test
+    public void testParcelNetworkCapabilities() {
+        final Set<Range<Integer>> uids = new ArraySet<>();
+        uids.add(uidRange(50, 100));
+        uids.add(uidRange(3000, 4000));
+        final NetworkCapabilities netCap = new NetworkCapabilities()
+            .addCapability(NET_CAPABILITY_INTERNET)
+            .addCapability(NET_CAPABILITY_EIMS)
+            .addCapability(NET_CAPABILITY_NOT_METERED);
+        if (isAtLeastS()) {
+            netCap.setSubscriptionIds(Set.of(TEST_SUBID1, TEST_SUBID2));
+            netCap.setUids(uids);
+        }
+        if (isAtLeastR()) {
+            netCap.setOwnerUid(123);
+            netCap.setAdministratorUids(new int[] {5, 11});
+        }
+        assertParcelingIsLossless(netCap);
+        netCap.setSSID(TEST_SSID);
+        testParcelSane(netCap);
+    }
+
+    @Test
+    public void testParcelNetworkCapabilitiesWithRequestorUidAndPackageName() {
+        final NetworkCapabilities netCap = new NetworkCapabilities()
+                .addCapability(NET_CAPABILITY_INTERNET)
+                .addCapability(NET_CAPABILITY_EIMS)
+                .addCapability(NET_CAPABILITY_NOT_METERED);
+        if (isAtLeastR()) {
+            netCap.setRequestorPackageName("com.android.test");
+            netCap.setRequestorUid(9304);
+        }
+        assertParcelingIsLossless(netCap);
+        netCap.setSSID(TEST_SSID);
+        testParcelSane(netCap);
+    }
+
+    private void testParcelSane(NetworkCapabilities cap) {
+        if (isAtLeastS()) {
+            assertParcelSane(cap, 16);
+        } else if (isAtLeastR()) {
+            assertParcelSane(cap, 15);
+        } else {
+            assertParcelSane(cap, 11);
+        }
+    }
+
+    private static NetworkCapabilities createNetworkCapabilitiesWithTransportInfo() {
+        return new NetworkCapabilities()
+                .addCapability(NET_CAPABILITY_INTERNET)
+                .addCapability(NET_CAPABILITY_EIMS)
+                .addCapability(NET_CAPABILITY_NOT_METERED)
+                .setSSID(TEST_SSID)
+                .setTransportInfo(new TestTransportInfo())
+                .setRequestorPackageName("com.android.test")
+                .setRequestorUid(9304);
+    }
+
+    @Test
+    public void testNetworkCapabilitiesCopyWithNoRedactions() {
+        assumeTrue(isAtLeastS());
+
+        final NetworkCapabilities netCap = createNetworkCapabilitiesWithTransportInfo();
+        final NetworkCapabilities netCapWithNoRedactions =
+                new NetworkCapabilities(netCap, NetworkCapabilities.REDACT_NONE);
+        TestTransportInfo testTransportInfo =
+                (TestTransportInfo) netCapWithNoRedactions.getTransportInfo();
+        assertFalse(testTransportInfo.locationRedacted);
+        assertFalse(testTransportInfo.localMacAddressRedacted);
+        assertFalse(testTransportInfo.settingsRedacted);
+    }
+
+    @Test
+    public void testNetworkCapabilitiesCopyWithoutLocationSensitiveFields() {
+        assumeTrue(isAtLeastS());
+
+        final NetworkCapabilities netCap = createNetworkCapabilitiesWithTransportInfo();
+        final NetworkCapabilities netCapWithNoRedactions =
+                new NetworkCapabilities(netCap, REDACT_FOR_ACCESS_FINE_LOCATION);
+        TestTransportInfo testTransportInfo =
+                (TestTransportInfo) netCapWithNoRedactions.getTransportInfo();
+        assertTrue(testTransportInfo.locationRedacted);
+        assertFalse(testTransportInfo.localMacAddressRedacted);
+        assertFalse(testTransportInfo.settingsRedacted);
+    }
+
+    @Test
+    public void testOemPaid() {
+        NetworkCapabilities nc = new NetworkCapabilities();
+        // By default OEM_PAID is neither in the required or forbidden lists and the network is not
+        // restricted.
+        if (isAtLeastS()) {
+            assertFalse(nc.hasForbiddenCapability(NET_CAPABILITY_OEM_PAID));
+        }
+        assertFalse(nc.hasCapability(NET_CAPABILITY_OEM_PAID));
+        nc.maybeMarkCapabilitiesRestricted();
+        assertTrue(nc.hasCapability(NET_CAPABILITY_NOT_RESTRICTED));
+
+        // Adding OEM_PAID to capability list should make network restricted.
+        nc.addCapability(NET_CAPABILITY_OEM_PAID);
+        nc.addCapability(NET_CAPABILITY_INTERNET);  // Combine with unrestricted capability.
+        nc.maybeMarkCapabilitiesRestricted();
+        assertTrue(nc.hasCapability(NET_CAPABILITY_OEM_PAID));
+        assertFalse(nc.hasCapability(NET_CAPABILITY_NOT_RESTRICTED));
+
+        // Now let's make request for OEM_PAID network.
+        NetworkCapabilities nr = new NetworkCapabilities();
+        nr.addCapability(NET_CAPABILITY_OEM_PAID);
+        nr.maybeMarkCapabilitiesRestricted();
+        assertTrue(nr.satisfiedByNetworkCapabilities(nc));
+
+        // Request fails for network with the default capabilities.
+        assertFalse(nr.satisfiedByNetworkCapabilities(new NetworkCapabilities()));
+    }
+
+    @Test @IgnoreUpTo(Build.VERSION_CODES.R)
+    public void testOemPrivate() {
+        NetworkCapabilities nc = new NetworkCapabilities();
+        // By default OEM_PRIVATE is neither in the required or forbidden lists and the network is
+        // not restricted.
+        assertFalse(nc.hasForbiddenCapability(NET_CAPABILITY_OEM_PRIVATE));
+        assertFalse(nc.hasCapability(NET_CAPABILITY_OEM_PRIVATE));
+        nc.maybeMarkCapabilitiesRestricted();
+        assertTrue(nc.hasCapability(NET_CAPABILITY_NOT_RESTRICTED));
+
+        // Adding OEM_PRIVATE to capability list should make network restricted.
+        nc.addCapability(NET_CAPABILITY_OEM_PRIVATE);
+        nc.addCapability(NET_CAPABILITY_INTERNET);  // Combine with unrestricted capability.
+        nc.maybeMarkCapabilitiesRestricted();
+        assertTrue(nc.hasCapability(NET_CAPABILITY_OEM_PRIVATE));
+        assertFalse(nc.hasCapability(NET_CAPABILITY_NOT_RESTRICTED));
+
+        // Now let's make request for OEM_PRIVATE network.
+        NetworkCapabilities nr = new NetworkCapabilities();
+        nr.addCapability(NET_CAPABILITY_OEM_PRIVATE);
+        nr.maybeMarkCapabilitiesRestricted();
+        assertTrue(nr.satisfiedByNetworkCapabilities(nc));
+
+        // Request fails for network with the default capabilities.
+        assertFalse(nr.satisfiedByNetworkCapabilities(new NetworkCapabilities()));
+    }
+
+    @Test @IgnoreUpTo(Build.VERSION_CODES.R)
+    public void testForbiddenCapabilities() {
+        NetworkCapabilities network = new NetworkCapabilities();
+
+        NetworkCapabilities request = new NetworkCapabilities();
+        assertTrue("Request: " + request + ", Network:" + network,
+                request.satisfiedByNetworkCapabilities(network));
+
+        // Requesting absence of capabilities that network doesn't have. Request should satisfy.
+        request.addForbiddenCapability(NET_CAPABILITY_WIFI_P2P);
+        request.addForbiddenCapability(NET_CAPABILITY_NOT_METERED);
+        assertTrue(request.satisfiedByNetworkCapabilities(network));
+        assertArrayEquals(new int[]{NET_CAPABILITY_WIFI_P2P,
+                        NET_CAPABILITY_NOT_METERED},
+                request.getForbiddenCapabilities());
+
+        // This is a default capability, just want to make sure its there because we use it below.
+        assertTrue(network.hasCapability(NET_CAPABILITY_NOT_RESTRICTED));
+
+        // Verify that adding forbidden capability will effectively remove it from capability list.
+        request.addForbiddenCapability(NET_CAPABILITY_NOT_RESTRICTED);
+        assertTrue(request.hasForbiddenCapability(NET_CAPABILITY_NOT_RESTRICTED));
+        assertFalse(request.hasCapability(NET_CAPABILITY_NOT_RESTRICTED));
+
+        // Now this request won't be satisfied because network contains NOT_RESTRICTED.
+        assertFalse(request.satisfiedByNetworkCapabilities(network));
+        network.removeCapability(NET_CAPABILITY_NOT_RESTRICTED);
+        assertTrue(request.satisfiedByNetworkCapabilities(network));
+
+        // Verify that adding capability will effectively remove it from forbidden list
+        request.addCapability(NET_CAPABILITY_NOT_RESTRICTED);
+        assertTrue(request.hasCapability(NET_CAPABILITY_NOT_RESTRICTED));
+        assertFalse(request.hasForbiddenCapability(NET_CAPABILITY_NOT_RESTRICTED));
+
+        assertFalse(request.satisfiedByNetworkCapabilities(network));
+        network.addCapability(NET_CAPABILITY_NOT_RESTRICTED);
+        assertTrue(request.satisfiedByNetworkCapabilities(network));
+    }
+
+    @Test
+    public void testConnectivityManagedCapabilities() {
+        NetworkCapabilities nc = new NetworkCapabilities();
+        assertFalse(nc.hasConnectivityManagedCapability());
+        // Check every single system managed capability.
+        nc.addCapability(NET_CAPABILITY_CAPTIVE_PORTAL);
+        assertTrue(nc.hasConnectivityManagedCapability());
+        nc.removeCapability(NET_CAPABILITY_CAPTIVE_PORTAL);
+        nc.addCapability(NET_CAPABILITY_FOREGROUND);
+        assertTrue(nc.hasConnectivityManagedCapability());
+        nc.removeCapability(NET_CAPABILITY_FOREGROUND);
+        nc.addCapability(NET_CAPABILITY_PARTIAL_CONNECTIVITY);
+        assertTrue(nc.hasConnectivityManagedCapability());
+        nc.removeCapability(NET_CAPABILITY_PARTIAL_CONNECTIVITY);
+        nc.addCapability(NET_CAPABILITY_VALIDATED);
+        assertTrue(nc.hasConnectivityManagedCapability());
+    }
+
+    @Test
+    public void testEqualsNetCapabilities() {
+        NetworkCapabilities nc1 = new NetworkCapabilities();
+        NetworkCapabilities nc2 = new NetworkCapabilities();
+        assertTrue(nc1.equalsNetCapabilities(nc2));
+        assertEquals(nc1, nc2);
+
+        nc1.addCapability(NET_CAPABILITY_MMS);
+        assertFalse(nc1.equalsNetCapabilities(nc2));
+        assertNotEquals(nc1, nc2);
+        nc2.addCapability(NET_CAPABILITY_MMS);
+        assertTrue(nc1.equalsNetCapabilities(nc2));
+        assertEquals(nc1, nc2);
+
+        if (isAtLeastS()) {
+            nc1.addForbiddenCapability(NET_CAPABILITY_INTERNET);
+            assertFalse(nc1.equalsNetCapabilities(nc2));
+            nc2.addForbiddenCapability(NET_CAPABILITY_INTERNET);
+            assertTrue(nc1.equalsNetCapabilities(nc2));
+
+            // Remove a required capability doesn't affect forbidden capabilities.
+            // This is a behaviour change from R to S.
+            nc1.removeCapability(NET_CAPABILITY_INTERNET);
+            assertTrue(nc1.equalsNetCapabilities(nc2));
+
+            nc1.removeForbiddenCapability(NET_CAPABILITY_INTERNET);
+            assertFalse(nc1.equalsNetCapabilities(nc2));
+            nc2.removeForbiddenCapability(NET_CAPABILITY_INTERNET);
+            assertTrue(nc1.equalsNetCapabilities(nc2));
+        }
+    }
+
+    @Test
+    public void testSSID() {
+        NetworkCapabilities nc1 = new NetworkCapabilities();
+        NetworkCapabilities nc2 = new NetworkCapabilities();
+        assertTrue(nc2.satisfiedBySSID(nc1));
+
+        nc1.setSSID(TEST_SSID);
+        assertTrue(nc2.satisfiedBySSID(nc1));
+        nc2.setSSID("different " + TEST_SSID);
+        assertFalse(nc2.satisfiedBySSID(nc1));
+
+        assertTrue(nc1.satisfiedByImmutableNetworkCapabilities(nc2));
+        assertFalse(nc1.satisfiedByNetworkCapabilities(nc2));
+    }
+
+    private ArraySet<Range<Integer>> uidRanges(int from, int to) {
+        final ArraySet<Range<Integer>> range = new ArraySet<>(1);
+        range.add(uidRange(from, to));
+        return range;
+    }
+
+    private Range<Integer> uidRange(int from, int to) {
+        return new Range<Integer>(from, to);
+    }
+
+    @Test @IgnoreUpTo(Build.VERSION_CODES.Q)
+    public void testSetAdministratorUids() {
+        NetworkCapabilities nc =
+                new NetworkCapabilities().setAdministratorUids(new int[] {2, 1, 3});
+
+        assertArrayEquals(new int[] {1, 2, 3}, nc.getAdministratorUids());
+    }
+
+    @Test @IgnoreUpTo(Build.VERSION_CODES.Q)
+    public void testSetAdministratorUidsWithDuplicates() {
+        try {
+            new NetworkCapabilities().setAdministratorUids(new int[] {1, 1});
+            fail("Expected IllegalArgumentException for duplicate uids");
+        } catch (IllegalArgumentException expected) {
+        }
+    }
+
+    @Test
+    public void testCombineCapabilities() {
+        NetworkCapabilities nc1 = new NetworkCapabilities();
+        NetworkCapabilities nc2 = new NetworkCapabilities();
+
+        if (isAtLeastS()) {
+            nc1.addForbiddenCapability(NET_CAPABILITY_CAPTIVE_PORTAL);
+        }
+        nc1.addCapability(NET_CAPABILITY_NOT_ROAMING);
+        assertNotEquals(nc1, nc2);
+        nc2.combineCapabilities(nc1);
+        assertEquals(nc1, nc2);
+        assertTrue(nc2.hasCapability(NET_CAPABILITY_NOT_ROAMING));
+        if (isAtLeastS()) {
+            assertTrue(nc2.hasForbiddenCapability(NET_CAPABILITY_CAPTIVE_PORTAL));
+        }
+
+        if (isAtLeastS()) {
+            // This will effectively move NOT_ROAMING capability from required to forbidden for nc1.
+            nc1.addForbiddenCapability(NET_CAPABILITY_NOT_ROAMING);
+            // It is not allowed to have the same capability in both wanted and forbidden list.
+            assertThrows(IllegalArgumentException.class, () -> nc2.combineCapabilities(nc1));
+            // Remove forbidden capability to continue other tests.
+            nc1.removeForbiddenCapability(NET_CAPABILITY_NOT_ROAMING);
+        }
+
+        nc1.setSSID(TEST_SSID);
+        nc2.combineCapabilities(nc1);
+        if (isAtLeastR()) {
+            assertTrue(TEST_SSID.equals(nc2.getSsid()));
+        }
+
+        // Because they now have the same SSID, the following call should not throw
+        nc2.combineCapabilities(nc1);
+
+        nc1.setSSID(DIFFERENT_TEST_SSID);
+        try {
+            nc2.combineCapabilities(nc1);
+            fail("Expected IllegalStateException: can't combine different SSIDs");
+        } catch (IllegalStateException expected) {}
+        nc1.setSSID(TEST_SSID);
+
+        if (isAtLeastS()) {
+            nc1.setUids(uidRanges(10, 13));
+            assertNotEquals(nc1, nc2);
+            nc2.combineCapabilities(nc1);  // Everything + 10~13 is still everything.
+            assertNotEquals(nc1, nc2);
+            nc1.combineCapabilities(nc2);  // 10~13 + everything is everything.
+            assertEquals(nc1, nc2);
+            nc1.setUids(uidRanges(10, 13));
+            nc2.setUids(uidRanges(20, 23));
+            assertNotEquals(nc1, nc2);
+            nc1.combineCapabilities(nc2);
+            assertTrue(nc1.appliesToUid(12));
+            assertFalse(nc2.appliesToUid(12));
+            assertTrue(nc1.appliesToUid(22));
+            assertTrue(nc2.appliesToUid(22));
+
+            // Verify the subscription id list can be combined only when they are equal.
+            nc1.setSubscriptionIds(Set.of(TEST_SUBID1, TEST_SUBID2));
+            nc2.setSubscriptionIds(Set.of(TEST_SUBID2));
+            assertThrows(IllegalStateException.class, () -> nc2.combineCapabilities(nc1));
+
+            nc2.setSubscriptionIds(Set.of());
+            assertThrows(IllegalStateException.class, () -> nc2.combineCapabilities(nc1));
+
+            nc2.setSubscriptionIds(Set.of(TEST_SUBID2, TEST_SUBID1));
+            nc2.combineCapabilities(nc1);
+            assertEquals(Set.of(TEST_SUBID2, TEST_SUBID1), nc2.getSubscriptionIds());
+        }
+    }
+
+    @Test @IgnoreUpTo(Build.VERSION_CODES.Q)
+    public void testCombineCapabilities_AdministratorUids() {
+        final NetworkCapabilities nc1 = new NetworkCapabilities();
+        final NetworkCapabilities nc2 = new NetworkCapabilities();
+
+        final int[] adminUids = {3, 6, 12};
+        nc1.setAdministratorUids(adminUids);
+        nc2.combineCapabilities(nc1);
+        assertTrue(nc2.equalsAdministratorUids(nc1));
+        assertArrayEquals(nc2.getAdministratorUids(), adminUids);
+
+        final int[] adminUidsOtherOrder = {3, 12, 6};
+        nc1.setAdministratorUids(adminUidsOtherOrder);
+        assertTrue(nc2.equalsAdministratorUids(nc1));
+
+        final int[] adminUids2 = {11, 1, 12, 3, 6};
+        nc1.setAdministratorUids(adminUids2);
+        assertFalse(nc2.equalsAdministratorUids(nc1));
+        assertFalse(Arrays.equals(nc2.getAdministratorUids(), adminUids2));
+        try {
+            nc2.combineCapabilities(nc1);
+            fail("Shouldn't be able to combine different lists of admin UIDs");
+        } catch (IllegalStateException expected) { }
+    }
+
+    @Test
+    public void testSetCapabilities() {
+        final int[] REQUIRED_CAPABILITIES = new int[] {
+                NET_CAPABILITY_INTERNET, NET_CAPABILITY_NOT_VPN };
+
+        NetworkCapabilities nc1 = new NetworkCapabilities();
+        NetworkCapabilities nc2 = new NetworkCapabilities();
+
+        nc1.setCapabilities(REQUIRED_CAPABILITIES);
+        assertArrayEquals(REQUIRED_CAPABILITIES, nc1.getCapabilities());
+
+        // Verify that setting and adding capabilities leads to the same object state.
+        nc2.clearAll();
+        for (int cap : REQUIRED_CAPABILITIES) {
+            nc2.addCapability(cap);
+        }
+        assertEquals(nc1, nc2);
+
+        if (isAtLeastS()) {
+            final int[] forbiddenCapabilities = new int[]{
+                    NET_CAPABILITY_NOT_METERED, NET_CAPABILITY_NOT_RESTRICTED };
+
+            nc1.setCapabilities(REQUIRED_CAPABILITIES, forbiddenCapabilities);
+            assertArrayEquals(REQUIRED_CAPABILITIES, nc1.getCapabilities());
+            assertArrayEquals(forbiddenCapabilities, nc1.getForbiddenCapabilities());
+
+            nc2.clearAll();
+            for (int cap : REQUIRED_CAPABILITIES) {
+                nc2.addCapability(cap);
+            }
+            for (int cap : forbiddenCapabilities) {
+                nc2.addForbiddenCapability(cap);
+            }
+            assertEquals(nc1, nc2);
+        }
+    }
+
+    @Test
+    public void testSetNetworkSpecifierOnMultiTransportNc() {
+        // Sequence 1: Transport + Transport + NetworkSpecifier
+        NetworkCapabilities nc1 = new NetworkCapabilities();
+        nc1.addTransportType(TRANSPORT_CELLULAR).addTransportType(TRANSPORT_WIFI);
+        try {
+            nc1.setNetworkSpecifier(CompatUtil.makeEthernetNetworkSpecifier("eth0"));
+            fail("Cannot set NetworkSpecifier on a NetworkCapability with multiple transports!");
+        } catch (IllegalStateException expected) {
+            // empty
+        }
+
+        // Sequence 2: Transport + NetworkSpecifier + Transport
+        NetworkCapabilities nc2 = new NetworkCapabilities();
+        nc2.addTransportType(TRANSPORT_CELLULAR).setNetworkSpecifier(
+                CompatUtil.makeEthernetNetworkSpecifier("testtap3"));
+        try {
+            nc2.addTransportType(TRANSPORT_WIFI);
+            fail("Cannot set a second TransportType of a network which has a NetworkSpecifier!");
+        } catch (IllegalStateException expected) {
+            // empty
+        }
+    }
+
+    @Test
+    public void testSetTransportInfoOnMultiTransportNc() {
+        // Sequence 1: Transport + Transport + TransportInfo
+        NetworkCapabilities nc1 = new NetworkCapabilities();
+        nc1.addTransportType(TRANSPORT_CELLULAR).addTransportType(TRANSPORT_WIFI)
+                .setTransportInfo(new TestTransportInfo());
+
+        // Sequence 2: Transport + NetworkSpecifier + Transport
+        NetworkCapabilities nc2 = new NetworkCapabilities();
+        nc2.addTransportType(TRANSPORT_CELLULAR).setTransportInfo(new TestTransportInfo())
+                .addTransportType(TRANSPORT_WIFI);
+    }
+
+    @Test
+    public void testCombineTransportInfo() {
+        NetworkCapabilities nc1 = new NetworkCapabilities();
+        nc1.setTransportInfo(new TestTransportInfo());
+
+        NetworkCapabilities nc2 = new NetworkCapabilities();
+        // new TransportInfo so that object is not #equals to nc1's TransportInfo (that's where
+        // combine fails)
+        nc2.setTransportInfo(new TestTransportInfo());
+
+        try {
+            nc1.combineCapabilities(nc2);
+            fail("Should not be able to combine NetworkCabilities which contain TransportInfos");
+        } catch (IllegalStateException expected) {
+            // empty
+        }
+
+        // verify that can combine with identical TransportInfo objects
+        NetworkCapabilities nc3 = new NetworkCapabilities();
+        nc3.setTransportInfo(nc1.getTransportInfo());
+        nc1.combineCapabilities(nc3);
+    }
+
+    @Test
+    public void testSet() {
+        NetworkCapabilities nc1 = new NetworkCapabilities();
+        NetworkCapabilities nc2 = new NetworkCapabilities();
+
+        if (isAtLeastS()) {
+            nc1.addForbiddenCapability(NET_CAPABILITY_CAPTIVE_PORTAL);
+        }
+        nc1.addCapability(NET_CAPABILITY_NOT_ROAMING);
+        assertNotEquals(nc1, nc2);
+        nc2.set(nc1);
+        assertEquals(nc1, nc2);
+        assertTrue(nc2.hasCapability(NET_CAPABILITY_NOT_ROAMING));
+        if (isAtLeastS()) {
+            assertTrue(nc2.hasForbiddenCapability(NET_CAPABILITY_CAPTIVE_PORTAL));
+        }
+
+        if (isAtLeastS()) {
+            // This will effectively move NOT_ROAMING capability from required to forbidden for nc1.
+            nc1.addForbiddenCapability(NET_CAPABILITY_NOT_ROAMING);
+        }
+        nc1.setSSID(TEST_SSID);
+        nc2.set(nc1);
+        assertEquals(nc1, nc2);
+        if (isAtLeastS()) {
+            // Contrary to combineCapabilities, set() will have removed the NOT_ROAMING capability
+            // from nc2.
+            assertFalse(nc2.hasCapability(NET_CAPABILITY_NOT_ROAMING));
+            assertTrue(nc2.hasForbiddenCapability(NET_CAPABILITY_NOT_ROAMING));
+        }
+
+        if (isAtLeastR()) {
+            assertTrue(TEST_SSID.equals(nc2.getSsid()));
+        }
+
+        nc1.setSSID(DIFFERENT_TEST_SSID);
+        nc2.set(nc1);
+        assertEquals(nc1, nc2);
+        if (isAtLeastR()) {
+            assertTrue(DIFFERENT_TEST_SSID.equals(nc2.getSsid()));
+        }
+        if (isAtLeastS()) {
+            nc1.setUids(uidRanges(10, 13));
+        } else {
+            nc1.setUids(null);
+        }
+        nc2.set(nc1);  // Overwrites, as opposed to combineCapabilities
+        assertEquals(nc1, nc2);
+
+        if (isAtLeastS()) {
+            assertThrows(NullPointerException.class, () -> nc1.setSubscriptionIds(null));
+            nc1.setSubscriptionIds(Set.of());
+            nc2.set(nc1);
+            assertEquals(nc1, nc2);
+
+            nc1.setSubscriptionIds(Set.of(TEST_SUBID1));
+            nc2.set(nc1);
+            assertEquals(nc1, nc2);
+
+            nc2.setSubscriptionIds(Set.of(TEST_SUBID2, TEST_SUBID1));
+            nc2.set(nc1);
+            assertEquals(nc1, nc2);
+
+            nc2.setSubscriptionIds(Set.of(TEST_SUBID3, TEST_SUBID2));
+            assertNotEquals(nc1, nc2);
+        }
+    }
+
+    @Test
+    public void testGetTransportTypes() {
+        final NetworkCapabilities nc = new NetworkCapabilities();
+        nc.addTransportType(TRANSPORT_CELLULAR);
+        nc.addTransportType(TRANSPORT_WIFI);
+        nc.addTransportType(TRANSPORT_VPN);
+        nc.addTransportType(TRANSPORT_TEST);
+
+        final int[] transportTypes = nc.getTransportTypes();
+        assertEquals(4, transportTypes.length);
+        assertEquals(TRANSPORT_CELLULAR, transportTypes[0]);
+        assertEquals(TRANSPORT_WIFI, transportTypes[1]);
+        assertEquals(TRANSPORT_VPN, transportTypes[2]);
+        assertEquals(TRANSPORT_TEST, transportTypes[3]);
+    }
+
+    @Test @IgnoreUpTo(Build.VERSION_CODES.Q)
+    public void testTelephonyNetworkSpecifier() {
+        final TelephonyNetworkSpecifier specifier = new TelephonyNetworkSpecifier(1);
+        final NetworkCapabilities nc1 = new NetworkCapabilities.Builder()
+                .addTransportType(TRANSPORT_WIFI)
+                .setNetworkSpecifier(specifier)
+                .build();
+        assertEquals(specifier, nc1.getNetworkSpecifier());
+        try {
+            final NetworkCapabilities nc2 = new NetworkCapabilities.Builder()
+                    .setNetworkSpecifier(specifier)
+                    .build();
+            fail("Must have a single transport type. Without transport type or multiple transport"
+                    + " types is invalid.");
+        } catch (IllegalStateException expected) { }
+    }
+
+    @Test
+    public void testWifiAwareNetworkSpecifier() {
+        final NetworkCapabilities nc = new NetworkCapabilities()
+                .addTransportType(TRANSPORT_WIFI_AWARE);
+        // If NetworkSpecifier is not set, the default value is null.
+        assertNull(nc.getNetworkSpecifier());
+        final WifiAwareNetworkSpecifier specifier = new WifiAwareNetworkSpecifier.Builder(
+                mDiscoverySession, mPeerHandle).build();
+        nc.setNetworkSpecifier(specifier);
+        assertEquals(specifier, nc.getNetworkSpecifier());
+    }
+
+    @Test @IgnoreUpTo(Build.VERSION_CODES.Q)
+    public void testAdministratorUidsAndOwnerUid() {
+        // Test default owner uid.
+        // If the owner uid is not set, the default value should be Process.INVALID_UID.
+        final NetworkCapabilities nc1 = new NetworkCapabilities.Builder().build();
+        assertEquals(INVALID_UID, nc1.getOwnerUid());
+        // Test setAdministratorUids and getAdministratorUids.
+        final int[] administratorUids = {1001, 10001};
+        final NetworkCapabilities nc2 = new NetworkCapabilities.Builder()
+                .setAdministratorUids(administratorUids)
+                .build();
+        assertTrue(Arrays.equals(administratorUids, nc2.getAdministratorUids()));
+        // Test setOwnerUid and getOwnerUid.
+        // The owner UID must be included in administrator UIDs, or throw IllegalStateException.
+        try {
+            final NetworkCapabilities nc3 = new NetworkCapabilities.Builder()
+                    .setOwnerUid(1001)
+                    .build();
+            fail("The owner UID must be included in administrator UIDs.");
+        } catch (IllegalStateException expected) { }
+        final NetworkCapabilities nc4 = new NetworkCapabilities.Builder()
+                .setAdministratorUids(administratorUids)
+                .setOwnerUid(1001)
+                .build();
+        assertEquals(1001, nc4.getOwnerUid());
+        try {
+            final NetworkCapabilities nc5 = new NetworkCapabilities.Builder()
+                    .setAdministratorUids(null)
+                    .build();
+            fail("Should not set null into setAdministratorUids");
+        } catch (NullPointerException expected) { }
+    }
+
+    private static NetworkCapabilities capsWithSubIds(Integer ... subIds) {
+        // Since the NetworkRequest would put NOT_VCN_MANAGED capabilities in general, for
+        // every NetworkCapabilities that simulates networks needs to add it too in order to
+        // satisfy these requests.
+        final NetworkCapabilities nc = new NetworkCapabilities.Builder()
+                .addCapability(NET_CAPABILITY_NOT_VCN_MANAGED)
+                .setSubscriptionIds(new ArraySet<>(subIds)).build();
+        assertEquals(new ArraySet<>(subIds), nc.getSubscriptionIds());
+        return nc;
+    }
+
+    @Test @IgnoreUpTo(Build.VERSION_CODES.R)
+    public void testSubIds() throws Exception {
+        final NetworkCapabilities ncWithoutId = capsWithSubIds();
+        final NetworkCapabilities ncWithId = capsWithSubIds(TEST_SUBID1);
+        final NetworkCapabilities ncWithOtherIds = capsWithSubIds(TEST_SUBID1, TEST_SUBID3);
+        final NetworkCapabilities ncWithoutRequestedIds = capsWithSubIds(TEST_SUBID3);
+
+        final NetworkRequest requestWithoutId = new NetworkRequest.Builder().build();
+        assertEmpty(requestWithoutId.networkCapabilities.getSubscriptionIds());
+        final NetworkRequest requestWithIds = new NetworkRequest.Builder()
+                .setSubscriptionIds(Set.of(TEST_SUBID1, TEST_SUBID2)).build();
+        assertEquals(Set.of(TEST_SUBID1, TEST_SUBID2),
+                requestWithIds.networkCapabilities.getSubscriptionIds());
+
+        assertFalse(requestWithIds.canBeSatisfiedBy(ncWithoutId));
+        assertTrue(requestWithIds.canBeSatisfiedBy(ncWithOtherIds));
+        assertFalse(requestWithIds.canBeSatisfiedBy(ncWithoutRequestedIds));
+        assertTrue(requestWithIds.canBeSatisfiedBy(ncWithId));
+        assertTrue(requestWithoutId.canBeSatisfiedBy(ncWithoutId));
+        assertTrue(requestWithoutId.canBeSatisfiedBy(ncWithId));
+    }
+
+    @Test @IgnoreUpTo(Build.VERSION_CODES.R)
+    public void testEqualsSubIds() throws Exception {
+        assertEquals(capsWithSubIds(), capsWithSubIds());
+        assertNotEquals(capsWithSubIds(), capsWithSubIds(TEST_SUBID1));
+        assertEquals(capsWithSubIds(TEST_SUBID1), capsWithSubIds(TEST_SUBID1));
+        assertNotEquals(capsWithSubIds(TEST_SUBID1), capsWithSubIds(TEST_SUBID2));
+        assertNotEquals(capsWithSubIds(TEST_SUBID1), capsWithSubIds(TEST_SUBID2, TEST_SUBID1));
+        assertEquals(capsWithSubIds(TEST_SUBID1, TEST_SUBID2),
+                capsWithSubIds(TEST_SUBID2, TEST_SUBID1));
+    }
+
+    @Test
+    public void testLinkBandwidthKbps() {
+        final NetworkCapabilities nc = new NetworkCapabilities();
+        // The default value of LinkDown/UpstreamBandwidthKbps should be LINK_BANDWIDTH_UNSPECIFIED.
+        assertEquals(LINK_BANDWIDTH_UNSPECIFIED, nc.getLinkDownstreamBandwidthKbps());
+        assertEquals(LINK_BANDWIDTH_UNSPECIFIED, nc.getLinkUpstreamBandwidthKbps());
+        nc.setLinkDownstreamBandwidthKbps(512);
+        nc.setLinkUpstreamBandwidthKbps(128);
+        assertEquals(512, nc.getLinkDownstreamBandwidthKbps());
+        assertNotEquals(128, nc.getLinkDownstreamBandwidthKbps());
+        assertEquals(128, nc.getLinkUpstreamBandwidthKbps());
+        assertNotEquals(512, nc.getLinkUpstreamBandwidthKbps());
+    }
+
+    private int getMaxTransport() {
+        if (!isAtLeastS() && MAX_TRANSPORT == TRANSPORT_USB) return MAX_TRANSPORT - 1;
+        return MAX_TRANSPORT;
+    }
+
+    @Test
+    public void testSignalStrength() {
+        final NetworkCapabilities nc = new NetworkCapabilities();
+        // The default value of signal strength should be SIGNAL_STRENGTH_UNSPECIFIED.
+        assertEquals(SIGNAL_STRENGTH_UNSPECIFIED, nc.getSignalStrength());
+        nc.setSignalStrength(-80);
+        assertEquals(-80, nc.getSignalStrength());
+        assertNotEquals(-50, nc.getSignalStrength());
+    }
+
+    private void assertNoTransport(NetworkCapabilities nc) {
+        for (int i = MIN_TRANSPORT; i <= getMaxTransport(); i++) {
+            assertFalse(nc.hasTransport(i));
+        }
+    }
+
+    // Checks that all transport types from MIN_TRANSPORT to maxTransportType are set and all
+    // transport types from maxTransportType + 1 to MAX_TRANSPORT are not set when positiveSequence
+    // is true. If positiveSequence is false, then the check sequence is opposite.
+    private void checkCurrentTransportTypes(NetworkCapabilities nc, int maxTransportType,
+            boolean positiveSequence) {
+        for (int i = MIN_TRANSPORT; i <= maxTransportType; i++) {
+            if (positiveSequence) {
+                assertTrue(nc.hasTransport(i));
+            } else {
+                assertFalse(nc.hasTransport(i));
+            }
+        }
+        for (int i = getMaxTransport(); i > maxTransportType; i--) {
+            if (positiveSequence) {
+                assertFalse(nc.hasTransport(i));
+            } else {
+                assertTrue(nc.hasTransport(i));
+            }
+        }
+    }
+
+    @Test
+    public void testMultipleTransportTypes() {
+        final NetworkCapabilities nc = new NetworkCapabilities();
+        assertNoTransport(nc);
+        // Test adding multiple transport types.
+        for (int i = MIN_TRANSPORT; i <= getMaxTransport(); i++) {
+            nc.addTransportType(i);
+            checkCurrentTransportTypes(nc, i, true /* positiveSequence */);
+        }
+        // Test removing multiple transport types.
+        for (int i = MIN_TRANSPORT; i <= getMaxTransport(); i++) {
+            nc.removeTransportType(i);
+            checkCurrentTransportTypes(nc, i, false /* positiveSequence */);
+        }
+        assertNoTransport(nc);
+        nc.addTransportType(TRANSPORT_WIFI);
+        assertTrue(nc.hasTransport(TRANSPORT_WIFI));
+        assertFalse(nc.hasTransport(TRANSPORT_VPN));
+        nc.addTransportType(TRANSPORT_VPN);
+        assertTrue(nc.hasTransport(TRANSPORT_WIFI));
+        assertTrue(nc.hasTransport(TRANSPORT_VPN));
+        nc.removeTransportType(TRANSPORT_WIFI);
+        assertFalse(nc.hasTransport(TRANSPORT_WIFI));
+        assertTrue(nc.hasTransport(TRANSPORT_VPN));
+        nc.removeTransportType(TRANSPORT_VPN);
+        assertFalse(nc.hasTransport(TRANSPORT_WIFI));
+        assertFalse(nc.hasTransport(TRANSPORT_VPN));
+        assertNoTransport(nc);
+    }
+
+    @Test
+    public void testAddAndRemoveTransportType() {
+        final NetworkCapabilities nc = new NetworkCapabilities();
+        try {
+            nc.addTransportType(-1);
+            fail("Should not set invalid transport type into addTransportType");
+        } catch (IllegalArgumentException expected) { }
+        try {
+            nc.removeTransportType(-1);
+            fail("Should not set invalid transport type into removeTransportType");
+        } catch (IllegalArgumentException e) { }
+    }
+
+    /**
+     * Test TransportInfo to verify redaction mechanism.
+     */
+    private static class TestTransportInfo implements TransportInfo {
+        public final boolean locationRedacted;
+        public final boolean localMacAddressRedacted;
+        public final boolean settingsRedacted;
+
+        TestTransportInfo() {
+            locationRedacted = false;
+            localMacAddressRedacted = false;
+            settingsRedacted = false;
+        }
+
+        TestTransportInfo(boolean locationRedacted,
+                boolean localMacAddressRedacted,
+                boolean settingsRedacted) {
+            this.locationRedacted = locationRedacted;
+            this.localMacAddressRedacted =
+                    localMacAddressRedacted;
+            this.settingsRedacted = settingsRedacted;
+        }
+
+        @Override
+        public TransportInfo makeCopy(@NetworkCapabilities.RedactionType long redactions) {
+            return new TestTransportInfo(
+                    (redactions & NetworkCapabilities.REDACT_FOR_ACCESS_FINE_LOCATION) != 0,
+                    (redactions & REDACT_FOR_LOCAL_MAC_ADDRESS) != 0,
+                    (redactions & REDACT_FOR_NETWORK_SETTINGS) != 0
+            );
+        }
+
+        @Override
+        public @NetworkCapabilities.RedactionType long getApplicableRedactions() {
+            return REDACT_FOR_ACCESS_FINE_LOCATION | REDACT_FOR_LOCAL_MAC_ADDRESS
+                    | REDACT_FOR_NETWORK_SETTINGS;
+        }
+    }
+
+    @Test @IgnoreUpTo(Build.VERSION_CODES.Q)
+    public void testBuilder() {
+        final int ownerUid = 1001;
+        final int signalStrength = -80;
+        final int requestUid = 10100;
+        final int[] administratorUids = {ownerUid, 10001};
+        final TelephonyNetworkSpecifier specifier = new TelephonyNetworkSpecifier(1);
+        final TransportInfo transportInfo = new TransportInfo() {};
+        final String ssid = "TEST_SSID";
+        final String packageName = "com.google.test.networkcapabilities";
+        final NetworkCapabilities nc = new NetworkCapabilities.Builder()
+                .addTransportType(TRANSPORT_WIFI)
+                .addTransportType(TRANSPORT_CELLULAR)
+                .removeTransportType(TRANSPORT_CELLULAR)
+                .addCapability(NET_CAPABILITY_EIMS)
+                .addCapability(NET_CAPABILITY_CBS)
+                .removeCapability(NET_CAPABILITY_CBS)
+                .setAdministratorUids(administratorUids)
+                .setOwnerUid(ownerUid)
+                .setLinkDownstreamBandwidthKbps(512)
+                .setLinkUpstreamBandwidthKbps(128)
+                .setNetworkSpecifier(specifier)
+                .setTransportInfo(transportInfo)
+                .setSignalStrength(signalStrength)
+                .setSsid(ssid)
+                .setRequestorUid(requestUid)
+                .setRequestorPackageName(packageName)
+                .build();
+        assertEquals(1, nc.getTransportTypes().length);
+        assertEquals(TRANSPORT_WIFI, nc.getTransportTypes()[0]);
+        assertTrue(nc.hasCapability(NET_CAPABILITY_EIMS));
+        assertFalse(nc.hasCapability(NET_CAPABILITY_CBS));
+        assertTrue(Arrays.equals(administratorUids, nc.getAdministratorUids()));
+        assertEquals(ownerUid, nc.getOwnerUid());
+        assertEquals(512, nc.getLinkDownstreamBandwidthKbps());
+        assertNotEquals(128, nc.getLinkDownstreamBandwidthKbps());
+        assertEquals(128, nc.getLinkUpstreamBandwidthKbps());
+        assertNotEquals(512, nc.getLinkUpstreamBandwidthKbps());
+        assertEquals(specifier, nc.getNetworkSpecifier());
+        assertEquals(transportInfo, nc.getTransportInfo());
+        assertEquals(signalStrength, nc.getSignalStrength());
+        assertNotEquals(-50, nc.getSignalStrength());
+        assertEquals(ssid, nc.getSsid());
+        assertEquals(requestUid, nc.getRequestorUid());
+        assertEquals(packageName, nc.getRequestorPackageName());
+        // Cannot assign null into NetworkCapabilities.Builder
+        try {
+            final NetworkCapabilities.Builder builder = new NetworkCapabilities.Builder(null);
+            fail("Should not set null into NetworkCapabilities.Builder");
+        } catch (NullPointerException expected) { }
+        assertEquals(nc, new NetworkCapabilities.Builder(nc).build());
+
+        if (isAtLeastS()) {
+            final NetworkCapabilities nc2 = new NetworkCapabilities.Builder()
+                    .setSubscriptionIds(Set.of(TEST_SUBID1)).build();
+            assertEquals(Set.of(TEST_SUBID1), nc2.getSubscriptionIds());
+        }
+    }
+}
diff --git a/tests/common/java/android/net/NetworkProviderTest.kt b/tests/common/java/android/net/NetworkProviderTest.kt
new file mode 100644
index 0000000..7424157
--- /dev/null
+++ b/tests/common/java/android/net/NetworkProviderTest.kt
@@ -0,0 +1,201 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.net
+
+import android.app.Instrumentation
+import android.content.Context
+import android.net.NetworkCapabilities.TRANSPORT_TEST
+import android.net.NetworkProviderTest.TestNetworkCallback.CallbackEntry.OnUnavailable
+import android.net.NetworkProviderTest.TestNetworkProvider.CallbackEntry.OnNetworkRequestWithdrawn
+import android.net.NetworkProviderTest.TestNetworkProvider.CallbackEntry.OnNetworkRequested
+import android.os.Build
+import android.os.HandlerThread
+import android.os.Looper
+import androidx.test.InstrumentationRegistry
+import com.android.net.module.util.ArrayTrackRecord
+import com.android.testutils.CompatUtil
+import com.android.testutils.DevSdkIgnoreRule.IgnoreUpTo
+import com.android.testutils.DevSdkIgnoreRunner
+import com.android.testutils.isDevSdkInRange
+import org.junit.After
+import org.junit.Before
+import org.junit.Test
+import org.junit.runner.RunWith
+import org.mockito.Mockito.doReturn
+import org.mockito.Mockito.mock
+import org.mockito.Mockito.verifyNoMoreInteractions
+import java.util.UUID
+import kotlin.test.assertEquals
+import kotlin.test.assertNotEquals
+
+private const val DEFAULT_TIMEOUT_MS = 5000L
+private val instrumentation: Instrumentation
+    get() = InstrumentationRegistry.getInstrumentation()
+private val context: Context get() = InstrumentationRegistry.getContext()
+private val PROVIDER_NAME = "NetworkProviderTest"
+
+@RunWith(DevSdkIgnoreRunner::class)
+@IgnoreUpTo(Build.VERSION_CODES.Q)
+class NetworkProviderTest {
+    private val mCm = context.getSystemService(ConnectivityManager::class.java)
+    private val mHandlerThread = HandlerThread("${javaClass.simpleName} handler thread")
+
+    @Before
+    fun setUp() {
+        instrumentation.getUiAutomation().adoptShellPermissionIdentity()
+        mHandlerThread.start()
+    }
+
+    @After
+    fun tearDown() {
+        mHandlerThread.quitSafely()
+        instrumentation.getUiAutomation().dropShellPermissionIdentity()
+    }
+
+    private class TestNetworkProvider(context: Context, looper: Looper) :
+            NetworkProvider(context, looper, PROVIDER_NAME) {
+        private val seenEvents = ArrayTrackRecord<CallbackEntry>().newReadHead()
+
+        sealed class CallbackEntry {
+            data class OnNetworkRequested(
+                val request: NetworkRequest,
+                val score: Int,
+                val id: Int
+            ) : CallbackEntry()
+            data class OnNetworkRequestWithdrawn(val request: NetworkRequest) : CallbackEntry()
+        }
+
+        override fun onNetworkRequested(request: NetworkRequest, score: Int, id: Int) {
+            seenEvents.add(OnNetworkRequested(request, score, id))
+        }
+
+        override fun onNetworkRequestWithdrawn(request: NetworkRequest) {
+            seenEvents.add(OnNetworkRequestWithdrawn(request))
+        }
+
+        inline fun <reified T : CallbackEntry> expectCallback(
+            crossinline predicate: (T) -> Boolean
+        ) = seenEvents.poll(DEFAULT_TIMEOUT_MS) { it is T && predicate(it) }
+    }
+
+    private fun createNetworkProvider(ctx: Context = context): TestNetworkProvider {
+        return TestNetworkProvider(ctx, mHandlerThread.looper)
+    }
+
+    @Test
+    fun testOnNetworkRequested() {
+        val provider = createNetworkProvider()
+        assertEquals(provider.getProviderId(), NetworkProvider.ID_NONE)
+        mCm.registerNetworkProvider(provider)
+        assertNotEquals(provider.getProviderId(), NetworkProvider.ID_NONE)
+
+        val specifier = CompatUtil.makeTestNetworkSpecifier(
+                UUID.randomUUID().toString())
+        val nr: NetworkRequest = NetworkRequest.Builder()
+                .addTransportType(TRANSPORT_TEST)
+                .setNetworkSpecifier(specifier)
+                .build()
+        val cb = ConnectivityManager.NetworkCallback()
+        mCm.requestNetwork(nr, cb)
+        provider.expectCallback<OnNetworkRequested>() { callback ->
+            callback.request.getNetworkSpecifier() == specifier &&
+            callback.request.hasTransport(TRANSPORT_TEST)
+        }
+
+        val initialScore = 40
+        val updatedScore = 60
+        val nc = NetworkCapabilities().apply {
+                addTransportType(NetworkCapabilities.TRANSPORT_TEST)
+                removeCapability(NetworkCapabilities.NET_CAPABILITY_TRUSTED)
+                removeCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET)
+                addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_SUSPENDED)
+                addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_ROAMING)
+                addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_VPN)
+                setNetworkSpecifier(specifier)
+        }
+        val lp = LinkProperties()
+        val config = NetworkAgentConfig.Builder().build()
+        val agent = object : NetworkAgent(context, mHandlerThread.looper, "TestAgent", nc, lp,
+                initialScore, config, provider) {}
+
+        provider.expectCallback<OnNetworkRequested>() { callback ->
+            callback.request.getNetworkSpecifier() == specifier &&
+            callback.score == initialScore &&
+            callback.id == agent.providerId
+        }
+
+        agent.sendNetworkScore(updatedScore)
+        provider.expectCallback<OnNetworkRequested>() { callback ->
+            callback.request.getNetworkSpecifier() == specifier &&
+            callback.score == updatedScore &&
+            callback.id == agent.providerId
+        }
+
+        mCm.unregisterNetworkCallback(cb)
+        provider.expectCallback<OnNetworkRequestWithdrawn>() { callback ->
+            callback.request.getNetworkSpecifier() == specifier &&
+            callback.request.hasTransport(TRANSPORT_TEST)
+        }
+        mCm.unregisterNetworkProvider(provider)
+        // Provider id should be ID_NONE after unregister network provider
+        assertEquals(provider.getProviderId(), NetworkProvider.ID_NONE)
+        // unregisterNetworkProvider should not crash even if it's called on an
+        // already unregistered provider.
+        mCm.unregisterNetworkProvider(provider)
+    }
+
+    private class TestNetworkCallback : ConnectivityManager.NetworkCallback() {
+        private val seenEvents = ArrayTrackRecord<CallbackEntry>().newReadHead()
+        sealed class CallbackEntry {
+            object OnUnavailable : CallbackEntry()
+        }
+
+        override fun onUnavailable() {
+            seenEvents.add(OnUnavailable)
+        }
+
+        inline fun <reified T : CallbackEntry> expectCallback(
+            crossinline predicate: (T) -> Boolean
+        ) = seenEvents.poll(DEFAULT_TIMEOUT_MS) { it is T && predicate(it) }
+    }
+
+    @Test
+    fun testDeclareNetworkRequestUnfulfillable() {
+        val mockContext = mock(Context::class.java)
+        doReturn(mCm).`when`(mockContext).getSystemService(Context.CONNECTIVITY_SERVICE)
+        val provider = createNetworkProvider(mockContext)
+        // ConnectivityManager not required at creation time after R
+        if (!isDevSdkInRange(0, Build.VERSION_CODES.R)) {
+            verifyNoMoreInteractions(mockContext)
+        }
+
+        mCm.registerNetworkProvider(provider)
+
+        val specifier = CompatUtil.makeTestNetworkSpecifier(
+                UUID.randomUUID().toString())
+        val nr: NetworkRequest = NetworkRequest.Builder()
+                .addTransportType(TRANSPORT_TEST)
+                .setNetworkSpecifier(specifier)
+                .build()
+
+        val cb = TestNetworkCallback()
+        mCm.requestNetwork(nr, cb)
+        provider.declareNetworkRequestUnfulfillable(nr)
+        cb.expectCallback<OnUnavailable>() { nr.getNetworkSpecifier() == specifier }
+        mCm.unregisterNetworkProvider(provider)
+    }
+}
diff --git a/tests/common/java/android/net/NetworkSpecifierTest.kt b/tests/common/java/android/net/NetworkSpecifierTest.kt
new file mode 100644
index 0000000..f3409f5
--- /dev/null
+++ b/tests/common/java/android/net/NetworkSpecifierTest.kt
@@ -0,0 +1,67 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package android.net
+
+import android.os.Build
+import androidx.test.filters.SmallTest
+import com.android.testutils.DevSdkIgnoreRule.IgnoreUpTo
+import com.android.testutils.DevSdkIgnoreRunner
+import kotlin.test.assertTrue
+import kotlin.test.assertEquals
+import kotlin.test.assertFalse
+import kotlin.test.assertNotEquals
+import org.junit.Test
+import org.junit.runner.RunWith
+
+@SmallTest
+@RunWith(DevSdkIgnoreRunner::class)
+@IgnoreUpTo(Build.VERSION_CODES.Q)
+class NetworkSpecifierTest {
+    private class TestNetworkSpecifier(
+        val intData: Int = 123,
+        val stringData: String = "init"
+    ) : NetworkSpecifier() {
+        override fun canBeSatisfiedBy(other: NetworkSpecifier?): Boolean =
+                other != null &&
+                other is TestNetworkSpecifier &&
+                other.intData >= intData &&
+                stringData.equals(other.stringData)
+
+        override fun redact(): NetworkSpecifier = TestNetworkSpecifier(intData, "redact")
+    }
+
+    @Test
+    fun testRedact() {
+        val ns: TestNetworkSpecifier = TestNetworkSpecifier()
+        val redactNs = ns.redact()
+        assertTrue(redactNs is TestNetworkSpecifier)
+        assertEquals(ns.intData, redactNs.intData)
+        assertNotEquals(ns.stringData, redactNs.stringData)
+        assertTrue("redact".equals(redactNs.stringData))
+    }
+
+    @Test
+    fun testcanBeSatisfiedBy() {
+        val target: TestNetworkSpecifier = TestNetworkSpecifier()
+        assertFalse(target.canBeSatisfiedBy(null))
+        assertTrue(target.canBeSatisfiedBy(TestNetworkSpecifier()))
+        val otherNs = TelephonyNetworkSpecifier.Builder().setSubscriptionId(123).build()
+        assertFalse(target.canBeSatisfiedBy(otherNs))
+        assertTrue(target.canBeSatisfiedBy(TestNetworkSpecifier(intData = 999)))
+        assertFalse(target.canBeSatisfiedBy(TestNetworkSpecifier(intData = 1)))
+        assertFalse(target.canBeSatisfiedBy(TestNetworkSpecifier(stringData = "diff")))
+    }
+}
\ No newline at end of file
diff --git a/tests/common/java/android/net/NetworkStackTest.java b/tests/common/java/android/net/NetworkStackTest.java
new file mode 100644
index 0000000..f8f9c72
--- /dev/null
+++ b/tests/common/java/android/net/NetworkStackTest.java
@@ -0,0 +1,51 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package android.net;
+
+import static org.junit.Assert.assertEquals;
+
+import android.os.Build;
+import android.os.IBinder;
+
+import androidx.test.runner.AndroidJUnit4;
+
+import com.android.testutils.DevSdkIgnoreRule;
+import com.android.testutils.DevSdkIgnoreRule.IgnoreUpTo;
+
+import org.junit.Before;
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+
+@RunWith(AndroidJUnit4.class)
+public class NetworkStackTest {
+    @Rule
+    public DevSdkIgnoreRule mDevSdkIgnoreRule = new DevSdkIgnoreRule();
+
+    @Mock private IBinder mConnectorBinder;
+
+    @Before public void setUp() throws Exception {
+        MockitoAnnotations.initMocks(this);
+    }
+
+    @Test @IgnoreUpTo(Build.VERSION_CODES.Q)
+    public void testGetService() {
+        NetworkStack.setServiceForTest(mConnectorBinder);
+        assertEquals(NetworkStack.getService(), mConnectorBinder);
+    }
+}
diff --git a/tests/common/java/android/net/NetworkStateSnapshotTest.kt b/tests/common/java/android/net/NetworkStateSnapshotTest.kt
new file mode 100644
index 0000000..0ca4d95
--- /dev/null
+++ b/tests/common/java/android/net/NetworkStateSnapshotTest.kt
@@ -0,0 +1,73 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.net
+
+import android.net.ConnectivityManager.TYPE_NONE
+import android.net.ConnectivityManager.TYPE_WIFI
+import android.net.InetAddresses.parseNumericAddress
+import android.net.NetworkCapabilities.TRANSPORT_WIFI
+import android.os.Build
+import androidx.test.filters.SmallTest
+import com.android.testutils.DevSdkIgnoreRule
+import com.android.testutils.DevSdkIgnoreRunner
+import com.android.testutils.assertParcelSane
+import org.junit.Test
+import org.junit.runner.RunWith
+import java.net.Inet4Address
+import java.net.Inet6Address
+
+private const val TEST_IMSI = "imsi1"
+private const val TEST_SSID = "SSID1"
+private const val TEST_NETID = 123
+
+private val TEST_IPV4_GATEWAY = parseNumericAddress("192.168.222.3") as Inet4Address
+private val TEST_IPV6_GATEWAY = parseNumericAddress("2001:db8::1") as Inet6Address
+private val TEST_IPV4_LINKADDR = LinkAddress("192.168.222.123/24")
+private val TEST_IPV6_LINKADDR = LinkAddress("2001:db8::123/64")
+private val TEST_IFACE = "fake0"
+private val TEST_LINK_PROPERTIES = LinkProperties().apply {
+    interfaceName = TEST_IFACE
+    addLinkAddress(TEST_IPV4_LINKADDR)
+    addLinkAddress(TEST_IPV6_LINKADDR)
+
+    // Add default routes
+    addRoute(RouteInfo(IpPrefix(parseNumericAddress("0.0.0.0"), 0), TEST_IPV4_GATEWAY))
+    addRoute(RouteInfo(IpPrefix(parseNumericAddress("::"), 0), TEST_IPV6_GATEWAY))
+}
+
+private val TEST_CAPABILITIES = NetworkCapabilities().apply {
+    addTransportType(TRANSPORT_WIFI)
+    setCapability(NetworkCapabilities.NET_CAPABILITY_NOT_METERED, false)
+    setCapability(NetworkCapabilities.NET_CAPABILITY_NOT_ROAMING, true)
+    setSSID(TEST_SSID)
+}
+
+@SmallTest
+@RunWith(DevSdkIgnoreRunner::class)
+@DevSdkIgnoreRule.IgnoreUpTo(Build.VERSION_CODES.R)
+class NetworkStateSnapshotTest {
+
+    @Test
+    fun testParcelUnparcel() {
+        val emptySnapshot = NetworkStateSnapshot(Network(TEST_NETID), NetworkCapabilities(),
+                LinkProperties(), null, TYPE_NONE)
+        val snapshot = NetworkStateSnapshot(
+                Network(TEST_NETID), TEST_CAPABILITIES, TEST_LINK_PROPERTIES, TEST_IMSI, TYPE_WIFI)
+        assertParcelSane(emptySnapshot, 5)
+        assertParcelSane(snapshot, 5)
+    }
+}
diff --git a/tests/common/java/android/net/NetworkTest.java b/tests/common/java/android/net/NetworkTest.java
new file mode 100644
index 0000000..7423c73
--- /dev/null
+++ b/tests/common/java/android/net/NetworkTest.java
@@ -0,0 +1,202 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.net;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertNotEquals;
+import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.fail;
+
+import android.os.Build;
+import android.platform.test.annotations.AppModeFull;
+
+import androidx.test.filters.SmallTest;
+import androidx.test.runner.AndroidJUnit4;
+
+import com.android.testutils.DevSdkIgnoreRule;
+import com.android.testutils.DevSdkIgnoreRule.IgnoreAfter;
+import com.android.testutils.DevSdkIgnoreRule.IgnoreUpTo;
+
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import java.io.File;
+import java.io.FileDescriptor;
+import java.io.FileInputStream;
+import java.net.DatagramSocket;
+import java.net.Inet6Address;
+import java.net.InetAddress;
+import java.net.SocketException;
+
+@RunWith(AndroidJUnit4.class)
+@SmallTest
+public class NetworkTest {
+    final Network mNetwork = new Network(99);
+
+    @Rule
+    public final DevSdkIgnoreRule mIgnoreRule = new DevSdkIgnoreRule();
+
+    @Test
+    public void testBindSocketOfInvalidFdThrows() throws Exception {
+
+        final FileDescriptor fd = new FileDescriptor();
+        assertFalse(fd.valid());
+
+        try {
+            mNetwork.bindSocket(fd);
+            fail("SocketException not thrown");
+        } catch (SocketException expected) {}
+    }
+
+    @Test
+    public void testBindSocketOfNonSocketFdThrows() throws Exception {
+        final File devNull = new File("/dev/null");
+        assertTrue(devNull.canRead());
+
+        final FileInputStream fis = new FileInputStream(devNull);
+        assertTrue(null != fis.getFD());
+        assertTrue(fis.getFD().valid());
+
+        try {
+            mNetwork.bindSocket(fis.getFD());
+            fail("SocketException not thrown");
+        } catch (SocketException expected) {}
+    }
+
+    @Test
+    @AppModeFull(reason = "Socket cannot bind in instant app mode")
+    public void testBindSocketOfConnectedDatagramSocketThrows() throws Exception {
+        final DatagramSocket mDgramSocket = new DatagramSocket(0, (InetAddress) Inet6Address.ANY);
+        mDgramSocket.connect((InetAddress) Inet6Address.LOOPBACK, 53);
+        assertTrue(mDgramSocket.isConnected());
+
+        try {
+            mNetwork.bindSocket(mDgramSocket);
+            fail("SocketException not thrown");
+        } catch (SocketException expected) {}
+    }
+
+    @Test
+    public void testBindSocketOfLocalSocketThrows() throws Exception {
+        final LocalSocket mLocalClient = new LocalSocket();
+        mLocalClient.bind(new LocalSocketAddress("testClient"));
+        assertTrue(mLocalClient.getFileDescriptor().valid());
+
+        try {
+            mNetwork.bindSocket(mLocalClient.getFileDescriptor());
+            fail("SocketException not thrown");
+        } catch (SocketException expected) {}
+
+        final LocalServerSocket mLocalServer = new LocalServerSocket("testServer");
+        mLocalClient.connect(mLocalServer.getLocalSocketAddress());
+        assertTrue(mLocalClient.isConnected());
+
+        try {
+            mNetwork.bindSocket(mLocalClient.getFileDescriptor());
+            fail("SocketException not thrown");
+        } catch (SocketException expected) {}
+    }
+
+    @Test
+    public void testZeroIsObviousForDebugging() {
+        Network zero = new Network(0);
+        assertEquals(0, zero.hashCode());
+        assertEquals(0, zero.getNetworkHandle());
+        assertEquals("0", zero.toString());
+    }
+
+    @Test
+    public void testGetNetworkHandle() {
+        Network one = new Network(1);
+        Network two = new Network(2);
+        Network three = new Network(3);
+
+        // None of the hashcodes are zero.
+        assertNotEquals(0, one.hashCode());
+        assertNotEquals(0, two.hashCode());
+        assertNotEquals(0, three.hashCode());
+
+        // All the hashcodes are distinct.
+        assertNotEquals(one.hashCode(), two.hashCode());
+        assertNotEquals(one.hashCode(), three.hashCode());
+        assertNotEquals(two.hashCode(), three.hashCode());
+
+        // None of the handles are zero.
+        assertNotEquals(0, one.getNetworkHandle());
+        assertNotEquals(0, two.getNetworkHandle());
+        assertNotEquals(0, three.getNetworkHandle());
+
+        // All the handles are distinct.
+        assertNotEquals(one.getNetworkHandle(), two.getNetworkHandle());
+        assertNotEquals(one.getNetworkHandle(), three.getNetworkHandle());
+        assertNotEquals(two.getNetworkHandle(), three.getNetworkHandle());
+
+        // The handles are not equal to the hashcodes.
+        assertNotEquals(one.hashCode(), one.getNetworkHandle());
+        assertNotEquals(two.hashCode(), two.getNetworkHandle());
+        assertNotEquals(three.hashCode(), three.getNetworkHandle());
+
+        // Adjust as necessary to test an implementation's specific constants.
+        // When running with runtest, "adb logcat -s TestRunner" can be useful.
+        assertEquals(7700664333L, one.getNetworkHandle());
+        assertEquals(11995631629L, two.getNetworkHandle());
+        assertEquals(16290598925L, three.getNetworkHandle());
+    }
+
+    // getNetId() did not exist in Q
+    @Test @IgnoreUpTo(Build.VERSION_CODES.Q)
+    public void testGetNetId() {
+        assertEquals(1234, new Network(1234).getNetId());
+        assertEquals(2345, new Network(2345, true).getNetId());
+    }
+
+    @Test
+    public void testFromNetworkHandle() {
+        final Network network = new Network(1234);
+        assertEquals(network.netId, Network.fromNetworkHandle(network.getNetworkHandle()).netId);
+    }
+
+    // Parsing private DNS bypassing handle was not supported until S
+    @Test @IgnoreUpTo(Build.VERSION_CODES.R)
+    public void testFromNetworkHandlePrivateDnsBypass_S() {
+        final Network network = new Network(1234, true);
+
+        final Network recreatedNetwork = Network.fromNetworkHandle(network.getNetworkHandle());
+        assertEquals(network.netId, recreatedNetwork.netId);
+        assertEquals(network.getNetIdForResolv(), recreatedNetwork.getNetIdForResolv());
+    }
+
+    @Test @IgnoreAfter(Build.VERSION_CODES.R)
+    public void testFromNetworkHandlePrivateDnsBypass_R() {
+        final Network network = new Network(1234, true);
+
+        final Network recreatedNetwork = Network.fromNetworkHandle(network.getNetworkHandle());
+        assertEquals(network.netId, recreatedNetwork.netId);
+        // Until R included, fromNetworkHandle would not parse the private DNS bypass flag
+        assertEquals(network.netId, recreatedNetwork.getNetIdForResolv());
+    }
+
+    @Test
+    public void testGetPrivateDnsBypassingCopy() {
+        final Network copy = mNetwork.getPrivateDnsBypassingCopy();
+        assertEquals(mNetwork.netId, copy.netId);
+        assertNotEquals(copy.netId, copy.getNetIdForResolv());
+        assertNotEquals(mNetwork.getNetIdForResolv(), copy.getNetIdForResolv());
+    }
+}
diff --git a/tests/common/java/android/net/OemNetworkPreferencesTest.java b/tests/common/java/android/net/OemNetworkPreferencesTest.java
new file mode 100644
index 0000000..fd29a95
--- /dev/null
+++ b/tests/common/java/android/net/OemNetworkPreferencesTest.java
@@ -0,0 +1,152 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.net;
+
+import static com.android.testutils.MiscAsserts.assertThrows;
+import static com.android.testutils.ParcelUtils.assertParcelSane;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+
+import android.os.Build;
+
+import androidx.test.filters.SmallTest;
+
+import com.android.testutils.DevSdkIgnoreRule.IgnoreUpTo;
+import com.android.testutils.DevSdkIgnoreRunner;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import java.util.Map;
+
+@IgnoreUpTo(Build.VERSION_CODES.R)
+@RunWith(DevSdkIgnoreRunner.class)
+@SmallTest
+public class OemNetworkPreferencesTest {
+
+    private static final int TEST_PREF = OemNetworkPreferences.OEM_NETWORK_PREFERENCE_UNINITIALIZED;
+    private static final String TEST_PACKAGE = "com.google.apps.contacts";
+
+    private final OemNetworkPreferences.Builder mBuilder = new OemNetworkPreferences.Builder();
+
+    @Test
+    public void testBuilderAddNetworkPreferenceRequiresNonNullPackageName() {
+        assertThrows(NullPointerException.class,
+                () -> mBuilder.addNetworkPreference(null, TEST_PREF));
+    }
+
+    @Test
+    public void testBuilderRemoveNetworkPreferenceRequiresNonNullPackageName() {
+        assertThrows(NullPointerException.class,
+                () -> mBuilder.clearNetworkPreference(null));
+    }
+
+    @Test
+    public void testGetNetworkPreferenceReturnsCorrectValue() {
+        final int expectedNumberOfMappings = 1;
+        mBuilder.addNetworkPreference(TEST_PACKAGE, TEST_PREF);
+
+        final Map<String, Integer> networkPreferences =
+                mBuilder.build().getNetworkPreferences();
+
+        assertEquals(expectedNumberOfMappings, networkPreferences.size());
+        assertTrue(networkPreferences.containsKey(TEST_PACKAGE));
+    }
+
+    @Test
+    public void testGetNetworkPreferenceReturnsUnmodifiableValue() {
+        final String newPackage = "new.com.google.apps.contacts";
+        mBuilder.addNetworkPreference(TEST_PACKAGE, TEST_PREF);
+
+        final Map<String, Integer> networkPreferences =
+                mBuilder.build().getNetworkPreferences();
+
+        assertThrows(UnsupportedOperationException.class,
+                () -> networkPreferences.put(newPackage, TEST_PREF));
+
+        assertThrows(UnsupportedOperationException.class,
+                () -> networkPreferences.remove(TEST_PACKAGE));
+
+    }
+
+    @Test
+    public void testToStringReturnsCorrectValue() {
+        mBuilder.addNetworkPreference(TEST_PACKAGE, TEST_PREF);
+
+        final String networkPreferencesString = mBuilder.build().getNetworkPreferences().toString();
+
+        assertTrue(networkPreferencesString.contains(Integer.toString(TEST_PREF)));
+        assertTrue(networkPreferencesString.contains(TEST_PACKAGE));
+    }
+
+    @Test
+    public void testOemNetworkPreferencesParcelable() {
+        mBuilder.addNetworkPreference(TEST_PACKAGE, TEST_PREF);
+
+        final OemNetworkPreferences prefs = mBuilder.build();
+
+        assertParcelSane(prefs, 1 /* fieldCount */);
+    }
+
+    @Test
+    public void testAddNetworkPreferenceOverwritesPriorPreference() {
+        final int newPref = OemNetworkPreferences.OEM_NETWORK_PREFERENCE_OEM_PAID;
+        mBuilder.addNetworkPreference(TEST_PACKAGE, TEST_PREF);
+        Map<String, Integer> networkPreferences =
+                mBuilder.build().getNetworkPreferences();
+
+        assertTrue(networkPreferences.containsKey(TEST_PACKAGE));
+        assertEquals(networkPreferences.get(TEST_PACKAGE).intValue(), TEST_PREF);
+
+        mBuilder.addNetworkPreference(TEST_PACKAGE, newPref);
+        networkPreferences = mBuilder.build().getNetworkPreferences();
+
+        assertTrue(networkPreferences.containsKey(TEST_PACKAGE));
+        assertEquals(networkPreferences.get(TEST_PACKAGE).intValue(), newPref);
+    }
+
+    @Test
+    public void testRemoveNetworkPreferenceRemovesValue() {
+        mBuilder.addNetworkPreference(TEST_PACKAGE, TEST_PREF);
+        Map<String, Integer> networkPreferences =
+                mBuilder.build().getNetworkPreferences();
+
+        assertTrue(networkPreferences.containsKey(TEST_PACKAGE));
+
+        mBuilder.clearNetworkPreference(TEST_PACKAGE);
+        networkPreferences = mBuilder.build().getNetworkPreferences();
+
+        assertFalse(networkPreferences.containsKey(TEST_PACKAGE));
+    }
+
+    @Test
+    public void testConstructorByOemNetworkPreferencesSetsValue() {
+        mBuilder.addNetworkPreference(TEST_PACKAGE, TEST_PREF);
+        OemNetworkPreferences networkPreference = mBuilder.build();
+
+        final Map<String, Integer> networkPreferences =
+                new OemNetworkPreferences
+                        .Builder(networkPreference)
+                        .build()
+                        .getNetworkPreferences();
+
+        assertTrue(networkPreferences.containsKey(TEST_PACKAGE));
+        assertEquals(networkPreferences.get(TEST_PACKAGE).intValue(), TEST_PREF);
+    }
+}
diff --git a/tests/common/java/android/net/RouteInfoTest.java b/tests/common/java/android/net/RouteInfoTest.java
new file mode 100644
index 0000000..71689f9
--- /dev/null
+++ b/tests/common/java/android/net/RouteInfoTest.java
@@ -0,0 +1,434 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.net;
+
+import static android.net.RouteInfo.RTN_UNREACHABLE;
+
+import static com.android.testutils.MiscAsserts.assertEqualBothWays;
+import static com.android.testutils.MiscAsserts.assertFieldCountEquals;
+import static com.android.testutils.MiscAsserts.assertNotEqualEitherWay;
+import static com.android.testutils.ParcelUtils.assertParcelingIsLossless;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertNotEquals;
+import static org.junit.Assert.assertNull;
+import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.fail;
+
+import android.os.Build;
+
+import androidx.core.os.BuildCompat;
+import androidx.test.filters.SmallTest;
+import androidx.test.runner.AndroidJUnit4;
+
+import com.android.testutils.DevSdkIgnoreRule;
+import com.android.testutils.DevSdkIgnoreRule.IgnoreAfter;
+import com.android.testutils.DevSdkIgnoreRule.IgnoreUpTo;
+
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import java.net.Inet4Address;
+import java.net.Inet6Address;
+import java.net.InetAddress;
+
+@RunWith(AndroidJUnit4.class)
+@SmallTest
+public class RouteInfoTest {
+    @Rule
+    public final DevSdkIgnoreRule ignoreRule = new DevSdkIgnoreRule();
+
+    private static final int INVALID_ROUTE_TYPE = -1;
+
+    private InetAddress Address(String addr) {
+        return InetAddresses.parseNumericAddress(addr);
+    }
+
+    private IpPrefix Prefix(String prefix) {
+        return new IpPrefix(prefix);
+    }
+
+    private static boolean isAtLeastR() {
+        // BuildCompat.isAtLeastR is documented to return false on release SDKs (including R)
+        return Build.VERSION.SDK_INT > Build.VERSION_CODES.Q || BuildCompat.isAtLeastR();
+    }
+
+    @Test
+    public void testConstructor() {
+        RouteInfo r;
+        // Invalid input.
+        try {
+            r = new RouteInfo((IpPrefix) null, null, "rmnet0");
+            fail("Expected RuntimeException:  destination and gateway null");
+        } catch (RuntimeException e) { }
+
+        try {
+            r = new RouteInfo(Prefix("2001:db8:ace::/49"), Address("2001:db8::1"), "rmnet0",
+                    INVALID_ROUTE_TYPE);
+            fail("Invalid route type should cause exception");
+        } catch (IllegalArgumentException e) { }
+
+        try {
+            r = new RouteInfo(Prefix("2001:db8:ace::/49"), Address("192.0.2.1"), "rmnet0",
+                    RTN_UNREACHABLE);
+            fail("Address family mismatch should cause exception");
+        } catch (IllegalArgumentException e) { }
+
+        try {
+            r = new RouteInfo(Prefix("0.0.0.0/0"), Address("2001:db8::1"), "rmnet0",
+                    RTN_UNREACHABLE);
+            fail("Address family mismatch should cause exception");
+        } catch (IllegalArgumentException e) { }
+
+        // Null destination is default route.
+        r = new RouteInfo((IpPrefix) null, Address("2001:db8::1"), null);
+        assertEquals(Prefix("::/0"), r.getDestination());
+        assertEquals(Address("2001:db8::1"), r.getGateway());
+        assertNull(r.getInterface());
+
+        r = new RouteInfo((IpPrefix) null, Address("192.0.2.1"), "wlan0");
+        assertEquals(Prefix("0.0.0.0/0"), r.getDestination());
+        assertEquals(Address("192.0.2.1"), r.getGateway());
+        assertEquals("wlan0", r.getInterface());
+
+        // Null gateway sets gateway to unspecified address (why?).
+        r = new RouteInfo(Prefix("2001:db8:beef:cafe::/48"), null, "lo");
+        assertEquals(Prefix("2001:db8:beef::/48"), r.getDestination());
+        assertEquals(Address("::"), r.getGateway());
+        assertEquals("lo", r.getInterface());
+
+        r = new RouteInfo(Prefix("192.0.2.5/24"), null);
+        assertEquals(Prefix("192.0.2.0/24"), r.getDestination());
+        assertEquals(Address("0.0.0.0"), r.getGateway());
+        assertNull(r.getInterface());
+    }
+
+    @Test
+    public void testMatches() {
+        class PatchedRouteInfo {
+            private final RouteInfo mRouteInfo;
+
+            public PatchedRouteInfo(IpPrefix destination, InetAddress gateway, String iface) {
+                mRouteInfo = new RouteInfo(destination, gateway, iface);
+            }
+
+            public boolean matches(InetAddress destination) {
+                return mRouteInfo.matches(destination);
+            }
+        }
+
+        PatchedRouteInfo r;
+
+        r = new PatchedRouteInfo(Prefix("2001:db8:f00::ace:d00d/127"), null, "rmnet0");
+        assertTrue(r.matches(Address("2001:db8:f00::ace:d00c")));
+        assertTrue(r.matches(Address("2001:db8:f00::ace:d00d")));
+        assertFalse(r.matches(Address("2001:db8:f00::ace:d00e")));
+        assertFalse(r.matches(Address("2001:db8:f00::bad:d00d")));
+        assertFalse(r.matches(Address("2001:4868:4860::8888")));
+        assertFalse(r.matches(Address("8.8.8.8")));
+
+        r = new PatchedRouteInfo(Prefix("192.0.2.0/23"), null, "wlan0");
+        assertTrue(r.matches(Address("192.0.2.43")));
+        assertTrue(r.matches(Address("192.0.3.21")));
+        assertFalse(r.matches(Address("192.0.0.21")));
+        assertFalse(r.matches(Address("8.8.8.8")));
+
+        PatchedRouteInfo ipv6Default = new PatchedRouteInfo(Prefix("::/0"), null, "rmnet0");
+        assertTrue(ipv6Default.matches(Address("2001:db8::f00")));
+        assertFalse(ipv6Default.matches(Address("192.0.2.1")));
+
+        PatchedRouteInfo ipv4Default = new PatchedRouteInfo(Prefix("0.0.0.0/0"), null, "rmnet0");
+        assertTrue(ipv4Default.matches(Address("255.255.255.255")));
+        assertTrue(ipv4Default.matches(Address("192.0.2.1")));
+        assertFalse(ipv4Default.matches(Address("2001:db8::f00")));
+    }
+
+    @Test
+    public void testEquals() {
+        // IPv4
+        RouteInfo r1 = new RouteInfo(Prefix("2001:db8:ace::/48"), Address("2001:db8::1"), "wlan0");
+        RouteInfo r2 = new RouteInfo(Prefix("2001:db8:ace::/48"), Address("2001:db8::1"), "wlan0");
+        assertEqualBothWays(r1, r2);
+
+        RouteInfo r3 = new RouteInfo(Prefix("2001:db8:ace::/49"), Address("2001:db8::1"), "wlan0");
+        RouteInfo r4 = new RouteInfo(Prefix("2001:db8:ace::/48"), Address("2001:db8::2"), "wlan0");
+        RouteInfo r5 = new RouteInfo(Prefix("2001:db8:ace::/48"), Address("2001:db8::1"), "rmnet0");
+        assertNotEqualEitherWay(r1, r3);
+        assertNotEqualEitherWay(r1, r4);
+        assertNotEqualEitherWay(r1, r5);
+
+        // IPv6
+        r1 = new RouteInfo(Prefix("192.0.2.0/25"), Address("192.0.2.1"), "wlan0");
+        r2 = new RouteInfo(Prefix("192.0.2.0/25"), Address("192.0.2.1"), "wlan0");
+        assertEqualBothWays(r1, r2);
+
+        r3 = new RouteInfo(Prefix("192.0.2.0/24"), Address("192.0.2.1"), "wlan0");
+        r4 = new RouteInfo(Prefix("192.0.2.0/25"), Address("192.0.2.2"), "wlan0");
+        r5 = new RouteInfo(Prefix("192.0.2.0/25"), Address("192.0.2.1"), "rmnet0");
+        assertNotEqualEitherWay(r1, r3);
+        assertNotEqualEitherWay(r1, r4);
+        assertNotEqualEitherWay(r1, r5);
+
+        // Interfaces (but not destinations or gateways) can be null.
+        r1 = new RouteInfo(Prefix("192.0.2.0/25"), Address("192.0.2.1"), null);
+        r2 = new RouteInfo(Prefix("192.0.2.0/25"), Address("192.0.2.1"), null);
+        r3 = new RouteInfo(Prefix("192.0.2.0/24"), Address("192.0.2.1"), "wlan0");
+        assertEqualBothWays(r1, r2);
+        assertNotEqualEitherWay(r1, r3);
+    }
+
+    @Test
+    public void testHostAndDefaultRoutes() {
+        RouteInfo r;
+
+        r = new RouteInfo(Prefix("0.0.0.0/0"), Address("0.0.0.0"), "wlan0");
+        assertFalse(r.isHostRoute());
+        assertTrue(r.isDefaultRoute());
+        assertTrue(r.isIPv4Default());
+        assertFalse(r.isIPv6Default());
+        if (isAtLeastR()) {
+            assertFalse(r.isIPv4UnreachableDefault());
+            assertFalse(r.isIPv6UnreachableDefault());
+        }
+
+        r = new RouteInfo(Prefix("::/0"), Address("::"), "wlan0");
+        assertFalse(r.isHostRoute());
+        assertTrue(r.isDefaultRoute());
+        assertFalse(r.isIPv4Default());
+        assertTrue(r.isIPv6Default());
+        if (isAtLeastR()) {
+            assertFalse(r.isIPv4UnreachableDefault());
+            assertFalse(r.isIPv6UnreachableDefault());
+        }
+
+        r = new RouteInfo(Prefix("192.0.2.0/24"), null, "wlan0");
+        assertFalse(r.isHostRoute());
+        assertFalse(r.isDefaultRoute());
+        assertFalse(r.isIPv4Default());
+        assertFalse(r.isIPv6Default());
+        if (isAtLeastR()) {
+            assertFalse(r.isIPv4UnreachableDefault());
+            assertFalse(r.isIPv6UnreachableDefault());
+        }
+
+        r = new RouteInfo(Prefix("2001:db8::/48"), null, "wlan0");
+        assertFalse(r.isHostRoute());
+        assertFalse(r.isDefaultRoute());
+        assertFalse(r.isIPv4Default());
+        assertFalse(r.isIPv6Default());
+        if (isAtLeastR()) {
+            assertFalse(r.isIPv4UnreachableDefault());
+            assertFalse(r.isIPv6UnreachableDefault());
+        }
+
+        r = new RouteInfo(Prefix("192.0.2.0/32"), Address("0.0.0.0"), "wlan0");
+        assertTrue(r.isHostRoute());
+        assertFalse(r.isDefaultRoute());
+        assertFalse(r.isIPv4Default());
+        assertFalse(r.isIPv6Default());
+        if (isAtLeastR()) {
+            assertFalse(r.isIPv4UnreachableDefault());
+            assertFalse(r.isIPv6UnreachableDefault());
+        }
+
+        r = new RouteInfo(Prefix("2001:db8::/128"), Address("::"), "wlan0");
+        assertTrue(r.isHostRoute());
+        assertFalse(r.isDefaultRoute());
+        assertFalse(r.isIPv4Default());
+        assertFalse(r.isIPv6Default());
+        if (isAtLeastR()) {
+            assertFalse(r.isIPv4UnreachableDefault());
+            assertFalse(r.isIPv6UnreachableDefault());
+        }
+
+        r = new RouteInfo(Prefix("192.0.2.0/32"), null, "wlan0");
+        assertTrue(r.isHostRoute());
+        assertFalse(r.isDefaultRoute());
+        assertFalse(r.isIPv4Default());
+        assertFalse(r.isIPv6Default());
+        if (isAtLeastR()) {
+            assertFalse(r.isIPv4UnreachableDefault());
+            assertFalse(r.isIPv6UnreachableDefault());
+        }
+
+        r = new RouteInfo(Prefix("2001:db8::/128"), null, "wlan0");
+        assertTrue(r.isHostRoute());
+        assertFalse(r.isDefaultRoute());
+        assertFalse(r.isIPv4Default());
+        assertFalse(r.isIPv6Default());
+        if (isAtLeastR()) {
+            assertFalse(r.isIPv4UnreachableDefault());
+            assertFalse(r.isIPv6UnreachableDefault());
+        }
+
+        r = new RouteInfo(Prefix("::/128"), Address("fe80::"), "wlan0");
+        assertTrue(r.isHostRoute());
+        assertFalse(r.isDefaultRoute());
+        assertFalse(r.isIPv4Default());
+        assertFalse(r.isIPv6Default());
+        if (isAtLeastR()) {
+            assertFalse(r.isIPv4UnreachableDefault());
+            assertFalse(r.isIPv6UnreachableDefault());
+        }
+
+        r = new RouteInfo(Prefix("0.0.0.0/32"), Address("192.0.2.1"), "wlan0");
+        assertTrue(r.isHostRoute());
+        assertFalse(r.isDefaultRoute());
+        assertFalse(r.isIPv4Default());
+        assertFalse(r.isIPv6Default());
+        if (isAtLeastR()) {
+            assertFalse(r.isIPv4UnreachableDefault());
+            assertFalse(r.isIPv6UnreachableDefault());
+        }
+
+        r = new RouteInfo(Prefix("0.0.0.0/32"), Address("192.0.2.1"), "wlan0");
+        assertTrue(r.isHostRoute());
+        assertFalse(r.isDefaultRoute());
+        assertFalse(r.isIPv4Default());
+        assertFalse(r.isIPv6Default());
+        if (isAtLeastR()) {
+            assertFalse(r.isIPv4UnreachableDefault());
+            assertFalse(r.isIPv6UnreachableDefault());
+        }
+
+        r = new RouteInfo(new IpPrefix(Inet4Address.ANY, 0), RTN_UNREACHABLE);
+        assertFalse(r.isHostRoute());
+        assertFalse(r.isDefaultRoute());
+        assertFalse(r.isIPv4Default());
+        assertFalse(r.isIPv6Default());
+        if (isAtLeastR()) {
+            assertTrue(r.isIPv4UnreachableDefault());
+            assertFalse(r.isIPv6UnreachableDefault());
+        }
+
+        r = new RouteInfo(new IpPrefix(Inet6Address.ANY, 0), RTN_UNREACHABLE);
+        assertFalse(r.isHostRoute());
+        assertFalse(r.isDefaultRoute());
+        assertFalse(r.isIPv4Default());
+        assertFalse(r.isIPv6Default());
+        if (isAtLeastR()) {
+            assertFalse(r.isIPv4UnreachableDefault());
+            assertTrue(r.isIPv6UnreachableDefault());
+        }
+    }
+
+    @Test
+    public void testTruncation() {
+      LinkAddress l;
+      RouteInfo r;
+
+      l = new LinkAddress("192.0.2.5/30");
+      r = new RouteInfo(l, Address("192.0.2.1"), "wlan0");
+      assertEquals("192.0.2.4", r.getDestination().getAddress().getHostAddress());
+
+      l = new LinkAddress("2001:db8:1:f::5/63");
+      r = new RouteInfo(l, Address("2001:db8:5::1"), "wlan0");
+      assertEquals("2001:db8:1:e::", r.getDestination().getAddress().getHostAddress());
+    }
+
+    // Make sure that creating routes to multicast addresses doesn't throw an exception. Even though
+    // there's nothing we can do with them, we don't want to crash if, e.g., someone calls
+    // requestRouteToHostAddress("230.0.0.0", MOBILE_HIPRI);
+    @Test
+    public void testMulticastRoute() {
+      RouteInfo r;
+      r = new RouteInfo(Prefix("230.0.0.0/32"), Address("192.0.2.1"), "wlan0");
+      r = new RouteInfo(Prefix("ff02::1/128"), Address("2001:db8::1"), "wlan0");
+      // No exceptions? Good.
+    }
+
+    @Test
+    public void testParceling() {
+        RouteInfo r;
+        r = new RouteInfo(Prefix("192.0.2.0/24"), Address("192.0.2.1"), null);
+        assertParcelingIsLossless(r);
+        r = new RouteInfo(Prefix("192.0.2.0/24"), null, "wlan0");
+        assertParcelingIsLossless(r);
+        r = new RouteInfo(Prefix("192.0.2.0/24"), Address("192.0.2.1"), "wlan0", RTN_UNREACHABLE);
+        assertParcelingIsLossless(r);
+    }
+
+    @Test @IgnoreUpTo(Build.VERSION_CODES.Q)
+    public void testMtuParceling() {
+        final RouteInfo r = new RouteInfo(Prefix("ff02::1/128"), Address("2001:db8::"), "testiface",
+                RTN_UNREACHABLE, 1450 /* mtu */);
+        assertParcelingIsLossless(r);
+    }
+
+    @Test @IgnoreAfter(Build.VERSION_CODES.Q)
+    public void testFieldCount_Q() {
+        assertFieldCountEquals(6, RouteInfo.class);
+    }
+
+    @Test @IgnoreUpTo(Build.VERSION_CODES.Q)
+    public void testFieldCount() {
+        // Make sure any new field is covered by the above parceling tests when changing this number
+        assertFieldCountEquals(7, RouteInfo.class);
+    }
+
+    @Test @IgnoreUpTo(Build.VERSION_CODES.Q)
+    public void testMtu() {
+        RouteInfo r;
+        r = new RouteInfo(Prefix("0.0.0.0/0"), Address("0.0.0.0"), "wlan0",
+                RouteInfo.RTN_UNICAST, 1500);
+        assertEquals(1500, r.getMtu());
+
+        r = new RouteInfo(Prefix("0.0.0.0/0"), Address("0.0.0.0"), "wlan0");
+        assertEquals(0, r.getMtu());
+    }
+
+    @Test @IgnoreUpTo(Build.VERSION_CODES.Q)
+    public void testRouteKey() {
+        RouteInfo.RouteKey k1, k2;
+        // Only prefix, null gateway and null interface
+        k1 = new RouteInfo(Prefix("2001:db8::/128"), null).getRouteKey();
+        k2 = new RouteInfo(Prefix("2001:db8::/128"), null).getRouteKey();
+        assertEquals(k1, k2);
+        assertEquals(k1.hashCode(), k2.hashCode());
+
+        // With prefix, gateway and interface. Type and MTU does not affect RouteKey equality
+        k1 = new RouteInfo(Prefix("192.0.2.0/24"), Address("192.0.2.1"), "wlan0",
+                RTN_UNREACHABLE, 1450).getRouteKey();
+        k2 = new RouteInfo(Prefix("192.0.2.0/24"), Address("192.0.2.1"), "wlan0",
+                RouteInfo.RTN_UNICAST, 1400).getRouteKey();
+        assertEquals(k1, k2);
+        assertEquals(k1.hashCode(), k2.hashCode());
+
+        // Different scope IDs are ignored by the kernel, so we consider them equal here too.
+        k1 = new RouteInfo(Prefix("2001:db8::/64"), Address("fe80::1%1"), "wlan0").getRouteKey();
+        k2 = new RouteInfo(Prefix("2001:db8::/64"), Address("fe80::1%2"), "wlan0").getRouteKey();
+        assertEquals(k1, k2);
+        assertEquals(k1.hashCode(), k2.hashCode());
+
+        // Different prefix
+        k1 = new RouteInfo(Prefix("192.0.2.0/24"), null).getRouteKey();
+        k2 = new RouteInfo(Prefix("192.0.3.0/24"), null).getRouteKey();
+        assertNotEquals(k1, k2);
+
+        // Different gateway
+        k1 = new RouteInfo(Prefix("ff02::1/128"), Address("2001:db8::1"), null).getRouteKey();
+        k2 = new RouteInfo(Prefix("ff02::1/128"), Address("2001:db8::2"), null).getRouteKey();
+        assertNotEquals(k1, k2);
+
+        // Different interface
+        k1 = new RouteInfo(Prefix("ff02::1/128"), null, "tun0").getRouteKey();
+        k2 = new RouteInfo(Prefix("ff02::1/128"), null, "tun1").getRouteKey();
+        assertNotEquals(k1, k2);
+    }
+}
diff --git a/tests/common/java/android/net/StaticIpConfigurationTest.java b/tests/common/java/android/net/StaticIpConfigurationTest.java
new file mode 100644
index 0000000..b5f23bf
--- /dev/null
+++ b/tests/common/java/android/net/StaticIpConfigurationTest.java
@@ -0,0 +1,269 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.net;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertNotEquals;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertNull;
+import static org.junit.Assert.assertTrue;
+
+import android.os.Parcel;
+
+import androidx.test.filters.SmallTest;
+import androidx.test.runner.AndroidJUnit4;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import java.net.InetAddress;
+import java.util.ArrayList;
+import java.util.HashSet;
+import java.util.List;
+
+@RunWith(AndroidJUnit4.class)
+@SmallTest
+public class StaticIpConfigurationTest {
+
+    private static final String ADDRSTR = "192.0.2.2/25";
+    private static final LinkAddress ADDR = new LinkAddress(ADDRSTR);
+    private static final InetAddress GATEWAY = IpAddress("192.0.2.1");
+    private static final InetAddress OFFLINKGATEWAY = IpAddress("192.0.2.129");
+    private static final InetAddress DNS1 = IpAddress("8.8.8.8");
+    private static final InetAddress DNS2 = IpAddress("8.8.4.4");
+    private static final InetAddress DNS3 = IpAddress("4.2.2.2");
+    private static final String IFACE = "eth0";
+    private static final String FAKE_DOMAINS = "google.com";
+
+    private static InetAddress IpAddress(String addr) {
+        return InetAddress.parseNumericAddress(addr);
+    }
+
+    private void checkEmpty(StaticIpConfiguration s) {
+        assertNull(s.ipAddress);
+        assertNull(s.gateway);
+        assertNull(s.domains);
+        assertEquals(0, s.dnsServers.size());
+    }
+
+    private StaticIpConfiguration makeTestObject() {
+        StaticIpConfiguration s = new StaticIpConfiguration();
+        s.ipAddress = ADDR;
+        s.gateway = GATEWAY;
+        s.dnsServers.add(DNS1);
+        s.dnsServers.add(DNS2);
+        s.dnsServers.add(DNS3);
+        s.domains = FAKE_DOMAINS;
+        return s;
+    }
+
+    @Test
+    public void testConstructor() {
+        StaticIpConfiguration s = new StaticIpConfiguration();
+        checkEmpty(s);
+    }
+
+    @Test
+    public void testCopyAndClear() {
+        StaticIpConfiguration empty = new StaticIpConfiguration((StaticIpConfiguration) null);
+        checkEmpty(empty);
+
+        StaticIpConfiguration s1 = makeTestObject();
+        StaticIpConfiguration s2 = new StaticIpConfiguration(s1);
+        assertEquals(s1, s2);
+        s2.clear();
+        assertEquals(empty, s2);
+    }
+
+    @Test
+    public void testHashCodeAndEquals() {
+        HashSet<Integer> hashCodes = new HashSet();
+        hashCodes.add(0);
+
+        StaticIpConfiguration s = new StaticIpConfiguration();
+        // Check that this hash code is nonzero and different from all the ones seen so far.
+        assertTrue(hashCodes.add(s.hashCode()));
+
+        s.ipAddress = ADDR;
+        assertTrue(hashCodes.add(s.hashCode()));
+
+        s.gateway = GATEWAY;
+        assertTrue(hashCodes.add(s.hashCode()));
+
+        s.dnsServers.add(DNS1);
+        assertTrue(hashCodes.add(s.hashCode()));
+
+        s.dnsServers.add(DNS2);
+        assertTrue(hashCodes.add(s.hashCode()));
+
+        s.dnsServers.add(DNS3);
+        assertTrue(hashCodes.add(s.hashCode()));
+
+        s.domains = "example.com";
+        assertTrue(hashCodes.add(s.hashCode()));
+
+        assertFalse(s.equals(null));
+        assertEquals(s, s);
+
+        StaticIpConfiguration s2 = new StaticIpConfiguration(s);
+        assertEquals(s, s2);
+
+        s.ipAddress = new LinkAddress(DNS1, 32);
+        assertNotEquals(s, s2);
+
+        s2 = new StaticIpConfiguration(s);
+        s.domains = "foo";
+        assertNotEquals(s, s2);
+
+        s2 = new StaticIpConfiguration(s);
+        s.gateway = DNS2;
+        assertNotEquals(s, s2);
+
+        s2 = new StaticIpConfiguration(s);
+        s.dnsServers.add(DNS3);
+        assertNotEquals(s, s2);
+    }
+
+    @Test
+    public void testToLinkProperties() {
+        LinkProperties expected = new LinkProperties();
+        expected.setInterfaceName(IFACE);
+
+        StaticIpConfiguration s = new StaticIpConfiguration();
+        assertEquals(expected, s.toLinkProperties(IFACE));
+
+        final RouteInfo connectedRoute = new RouteInfo(new IpPrefix(ADDRSTR), null, IFACE);
+        s.ipAddress = ADDR;
+        expected.addLinkAddress(ADDR);
+        expected.addRoute(connectedRoute);
+        assertEquals(expected, s.toLinkProperties(IFACE));
+
+        s.gateway = GATEWAY;
+        RouteInfo defaultRoute = new RouteInfo(new IpPrefix("0.0.0.0/0"), GATEWAY, IFACE);
+        expected.addRoute(defaultRoute);
+        assertEquals(expected, s.toLinkProperties(IFACE));
+
+        s.gateway = OFFLINKGATEWAY;
+        expected.removeRoute(defaultRoute);
+        defaultRoute = new RouteInfo(new IpPrefix("0.0.0.0/0"), OFFLINKGATEWAY, IFACE);
+        expected.addRoute(defaultRoute);
+
+        RouteInfo gatewayRoute = new RouteInfo(new IpPrefix("192.0.2.129/32"), null, IFACE);
+        expected.addRoute(gatewayRoute);
+        assertEquals(expected, s.toLinkProperties(IFACE));
+
+        s.dnsServers.add(DNS1);
+        expected.addDnsServer(DNS1);
+        assertEquals(expected, s.toLinkProperties(IFACE));
+
+        s.dnsServers.add(DNS2);
+        s.dnsServers.add(DNS3);
+        expected.addDnsServer(DNS2);
+        expected.addDnsServer(DNS3);
+        assertEquals(expected, s.toLinkProperties(IFACE));
+
+        s.domains = FAKE_DOMAINS;
+        expected.setDomains(FAKE_DOMAINS);
+        assertEquals(expected, s.toLinkProperties(IFACE));
+
+        s.gateway = null;
+        expected.removeRoute(defaultRoute);
+        expected.removeRoute(gatewayRoute);
+        assertEquals(expected, s.toLinkProperties(IFACE));
+
+        // Without knowing the IP address, we don't have a directly-connected route, so we can't
+        // tell if the gateway is off-link or not and we don't add a host route. This isn't a real
+        // configuration, but we should at least not crash.
+        s.gateway = OFFLINKGATEWAY;
+        s.ipAddress = null;
+        expected.removeLinkAddress(ADDR);
+        expected.removeRoute(connectedRoute);
+        expected.addRoute(defaultRoute);
+        assertEquals(expected, s.toLinkProperties(IFACE));
+    }
+
+    private StaticIpConfiguration passThroughParcel(StaticIpConfiguration s) {
+        Parcel p = Parcel.obtain();
+        StaticIpConfiguration s2 = null;
+        try {
+            s.writeToParcel(p, 0);
+            p.setDataPosition(0);
+            s2 = StaticIpConfiguration.readFromParcel(p);
+        } finally {
+            p.recycle();
+        }
+        assertNotNull(s2);
+        return s2;
+    }
+
+    @Test
+    public void testParceling() {
+        StaticIpConfiguration s = makeTestObject();
+        StaticIpConfiguration s2 = passThroughParcel(s);
+        assertEquals(s, s2);
+    }
+
+    @Test
+    public void testBuilder() {
+        final ArrayList<InetAddress> dnsServers = new ArrayList<>();
+        dnsServers.add(DNS1);
+
+        final StaticIpConfiguration s = new StaticIpConfiguration.Builder()
+                .setIpAddress(ADDR)
+                .setGateway(GATEWAY)
+                .setDomains(FAKE_DOMAINS)
+                .setDnsServers(dnsServers)
+                .build();
+
+        assertEquals(s.ipAddress, s.getIpAddress());
+        assertEquals(ADDR, s.getIpAddress());
+        assertEquals(s.gateway, s.getGateway());
+        assertEquals(GATEWAY, s.getGateway());
+        assertEquals(s.domains, s.getDomains());
+        assertEquals(FAKE_DOMAINS, s.getDomains());
+        assertTrue(s.dnsServers.equals(s.getDnsServers()));
+        assertEquals(1, s.getDnsServers().size());
+        assertEquals(DNS1, s.getDnsServers().get(0));
+    }
+
+    @Test
+    public void testAddDnsServers() {
+        final StaticIpConfiguration s = new StaticIpConfiguration((StaticIpConfiguration) null);
+        checkEmpty(s);
+
+        s.addDnsServer(DNS1);
+        assertEquals(1, s.getDnsServers().size());
+        assertEquals(DNS1, s.getDnsServers().get(0));
+
+        s.addDnsServer(DNS2);
+        s.addDnsServer(DNS3);
+        assertEquals(3, s.getDnsServers().size());
+        assertEquals(DNS2, s.getDnsServers().get(1));
+        assertEquals(DNS3, s.getDnsServers().get(2));
+    }
+
+    @Test
+    public void testGetRoutes() {
+        final StaticIpConfiguration s = makeTestObject();
+        final List<RouteInfo> routeInfoList = s.getRoutes(IFACE);
+
+        assertEquals(2, routeInfoList.size());
+        assertEquals(new RouteInfo(ADDR, (InetAddress) null, IFACE), routeInfoList.get(0));
+        assertEquals(new RouteInfo((IpPrefix) null, GATEWAY, IFACE), routeInfoList.get(1));
+    }
+}
diff --git a/tests/common/java/android/net/TcpKeepalivePacketDataTest.kt b/tests/common/java/android/net/TcpKeepalivePacketDataTest.kt
new file mode 100644
index 0000000..7a18bb0
--- /dev/null
+++ b/tests/common/java/android/net/TcpKeepalivePacketDataTest.kt
@@ -0,0 +1,106 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.net
+
+import android.net.InetAddresses.parseNumericAddress
+import android.os.Build
+import com.android.testutils.DevSdkIgnoreRule
+import com.android.testutils.DevSdkIgnoreRunner
+import com.android.testutils.assertFieldCountEquals
+import com.android.testutils.assertParcelSane
+import org.junit.Test
+import org.junit.runner.RunWith
+import java.net.InetAddress
+import kotlin.test.assertEquals
+import kotlin.test.assertNotEquals
+import kotlin.test.assertTrue
+
+@RunWith(DevSdkIgnoreRunner::class)
+@DevSdkIgnoreRule.IgnoreUpTo(Build.VERSION_CODES.R) // TcpKeepalivePacketData added to SDK in S
+class TcpKeepalivePacketDataTest {
+    private fun makeData(
+        srcAddress: InetAddress = parseNumericAddress("192.0.2.123"),
+        srcPort: Int = 1234,
+        dstAddress: InetAddress = parseNumericAddress("192.0.2.231"),
+        dstPort: Int = 4321,
+        data: ByteArray = byteArrayOf(1, 2, 3),
+        tcpSeq: Int = 135,
+        tcpAck: Int = 246,
+        tcpWnd: Int = 1234,
+        tcpWndScale: Int = 2,
+        ipTos: Int = 0x12,
+        ipTtl: Int = 10
+    ) = TcpKeepalivePacketData(srcAddress, srcPort, dstAddress, dstPort, data, tcpSeq, tcpAck,
+            tcpWnd, tcpWndScale, ipTos, ipTtl)
+
+    @Test
+    fun testEquals() {
+        val data1 = makeData()
+        val data2 = makeData()
+        assertEquals(data1, data2)
+        assertEquals(data1.hashCode(), data2.hashCode())
+    }
+
+    @Test
+    fun testNotEquals() {
+        assertNotEquals(makeData(srcAddress = parseNumericAddress("192.0.2.124")), makeData())
+        assertNotEquals(makeData(srcPort = 1235), makeData())
+        assertNotEquals(makeData(dstAddress = parseNumericAddress("192.0.2.232")), makeData())
+        assertNotEquals(makeData(dstPort = 4322), makeData())
+        // .equals does not test .packet, as it should be generated from the other fields
+        assertNotEquals(makeData(tcpSeq = 136), makeData())
+        assertNotEquals(makeData(tcpAck = 247), makeData())
+        assertNotEquals(makeData(tcpWnd = 1235), makeData())
+        assertNotEquals(makeData(tcpWndScale = 3), makeData())
+        assertNotEquals(makeData(ipTos = 0x14), makeData())
+        assertNotEquals(makeData(ipTtl = 11), makeData())
+
+        // Update above assertions if field is added
+        assertFieldCountEquals(5, KeepalivePacketData::class.java)
+        assertFieldCountEquals(6, TcpKeepalivePacketData::class.java)
+    }
+
+    @Test
+    fun testParcelUnparcel() {
+        assertParcelSane(makeData(), fieldCount = 6) { a, b ->
+            // .equals() does not verify .packet
+            a == b && a.packet contentEquals b.packet
+        }
+    }
+
+    @Test
+    fun testToString() {
+        val data = makeData()
+        val str = data.toString()
+
+        assertTrue(str.contains(data.srcAddress.hostAddress))
+        assertTrue(str.contains(data.srcPort.toString()))
+        assertTrue(str.contains(data.dstAddress.hostAddress))
+        assertTrue(str.contains(data.dstPort.toString()))
+        // .packet not included in toString()
+        assertTrue(str.contains(data.getTcpSeq().toString()))
+        assertTrue(str.contains(data.getTcpAck().toString()))
+        assertTrue(str.contains(data.getTcpWindow().toString()))
+        assertTrue(str.contains(data.getTcpWindowScale().toString()))
+        assertTrue(str.contains(data.getIpTos().toString()))
+        assertTrue(str.contains(data.getIpTtl().toString()))
+
+        // Update above assertions if field is added
+        assertFieldCountEquals(5, KeepalivePacketData::class.java)
+        assertFieldCountEquals(6, TcpKeepalivePacketData::class.java)
+    }
+}
\ No newline at end of file
diff --git a/tests/common/java/android/net/UidRangeTest.java b/tests/common/java/android/net/UidRangeTest.java
new file mode 100644
index 0000000..1b1c954
--- /dev/null
+++ b/tests/common/java/android/net/UidRangeTest.java
@@ -0,0 +1,113 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.net;
+
+import static android.os.UserHandle.MIN_SECONDARY_USER_ID;
+import static android.os.UserHandle.SYSTEM;
+import static android.os.UserHandle.USER_SYSTEM;
+import static android.os.UserHandle.getUid;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.fail;
+
+import android.os.Build;
+import android.os.UserHandle;
+
+import androidx.test.filters.SmallTest;
+import androidx.test.runner.AndroidJUnit4;
+
+import com.android.testutils.DevSdkIgnoreRule;
+import com.android.testutils.DevSdkIgnoreRule.IgnoreUpTo;
+
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+@RunWith(AndroidJUnit4.class)
+@SmallTest
+public class UidRangeTest {
+
+    /*
+     * UidRange is no longer passed to netd. UID ranges between the framework and netd are passed as
+     * UidRangeParcel objects.
+     */
+
+    @Rule
+    public final DevSdkIgnoreRule mIgnoreRule = new DevSdkIgnoreRule();
+
+    @Test
+    public void testSingleItemUidRangeAllowed() {
+        new UidRange(123, 123);
+        new UidRange(0, 0);
+        new UidRange(Integer.MAX_VALUE, Integer.MAX_VALUE);
+    }
+
+    @Test
+    public void testNegativeUidsDisallowed() {
+        try {
+            new UidRange(-2, 100);
+            fail("Exception not thrown for negative start UID");
+        } catch (IllegalArgumentException expected) {
+        }
+
+        try {
+            new UidRange(-200, -100);
+            fail("Exception not thrown for negative stop UID");
+        } catch (IllegalArgumentException expected) {
+        }
+    }
+
+    @Test
+    public void testStopLessThanStartDisallowed() {
+        final int x = 4195000;
+        try {
+            new UidRange(x, x - 1);
+            fail("Exception not thrown for negative-length UID range");
+        } catch (IllegalArgumentException expected) {
+        }
+    }
+
+    @Test
+    public void testGetStartAndEndUser() throws Exception {
+        final UidRange uidRangeOfPrimaryUser = new UidRange(
+                getUid(USER_SYSTEM, 10000), getUid(USER_SYSTEM, 10100));
+        final UidRange uidRangeOfSecondaryUser = new UidRange(
+                getUid(MIN_SECONDARY_USER_ID, 10000), getUid(MIN_SECONDARY_USER_ID, 10100));
+        assertEquals(USER_SYSTEM, uidRangeOfPrimaryUser.getStartUser());
+        assertEquals(USER_SYSTEM, uidRangeOfPrimaryUser.getEndUser());
+        assertEquals(MIN_SECONDARY_USER_ID, uidRangeOfSecondaryUser.getStartUser());
+        assertEquals(MIN_SECONDARY_USER_ID, uidRangeOfSecondaryUser.getEndUser());
+
+        final UidRange uidRangeForDifferentUsers = new UidRange(
+                getUid(USER_SYSTEM, 10000), getUid(MIN_SECONDARY_USER_ID, 10100));
+        assertEquals(USER_SYSTEM, uidRangeOfPrimaryUser.getStartUser());
+        assertEquals(MIN_SECONDARY_USER_ID, uidRangeOfSecondaryUser.getEndUser());
+    }
+
+    @Test @IgnoreUpTo(Build.VERSION_CODES.R)
+    public void testCreateForUser() throws Exception {
+        final UidRange uidRangeOfPrimaryUser = UidRange.createForUser(SYSTEM);
+        final UidRange uidRangeOfSecondaryUser = UidRange.createForUser(
+                UserHandle.of(USER_SYSTEM + 1));
+        assertTrue(uidRangeOfPrimaryUser.stop < uidRangeOfSecondaryUser.start);
+        assertEquals(USER_SYSTEM, uidRangeOfPrimaryUser.getStartUser());
+        assertEquals(USER_SYSTEM, uidRangeOfPrimaryUser.getEndUser());
+        assertEquals(USER_SYSTEM + 1, uidRangeOfSecondaryUser.getStartUser());
+        assertEquals(USER_SYSTEM + 1, uidRangeOfSecondaryUser.getEndUser());
+    }
+}
diff --git a/tests/common/java/android/net/UnderlyingNetworkInfoTest.kt b/tests/common/java/android/net/UnderlyingNetworkInfoTest.kt
new file mode 100644
index 0000000..f23ba26
--- /dev/null
+++ b/tests/common/java/android/net/UnderlyingNetworkInfoTest.kt
@@ -0,0 +1,50 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.net
+
+import android.os.Build
+import androidx.test.filters.SmallTest
+import com.android.testutils.DevSdkIgnoreRule
+import com.android.testutils.DevSdkIgnoreRunner
+import com.android.testutils.assertParcelSane
+import org.junit.Test
+import org.junit.runner.RunWith
+import kotlin.test.assertEquals
+
+private const val TEST_OWNER_UID = 123
+private const val TEST_IFACE = "test_tun0"
+private val TEST_IFACE_LIST = listOf("wlan0", "rmnet_data0", "eth0")
+
+@SmallTest
+@RunWith(DevSdkIgnoreRunner::class)
+@DevSdkIgnoreRule.IgnoreUpTo(Build.VERSION_CODES.R)
+class UnderlyingNetworkInfoTest {
+    @Test
+    fun testParcelUnparcel() {
+        val testInfo = UnderlyingNetworkInfo(TEST_OWNER_UID, TEST_IFACE, TEST_IFACE_LIST)
+        assertEquals(TEST_OWNER_UID, testInfo.getOwnerUid())
+        assertEquals(TEST_IFACE, testInfo.getInterface())
+        assertEquals(TEST_IFACE_LIST, testInfo.getUnderlyingInterfaces())
+        assertParcelSane(testInfo, 3)
+
+        val emptyInfo = UnderlyingNetworkInfo(0, String(), listOf())
+        assertEquals(0, emptyInfo.getOwnerUid())
+        assertEquals(String(), emptyInfo.getInterface())
+        assertEquals(listOf(), emptyInfo.getUnderlyingInterfaces())
+        assertParcelSane(emptyInfo, 3)
+    }
+}
\ No newline at end of file
diff --git a/tests/common/java/android/net/apf/ApfCapabilitiesTest.java b/tests/common/java/android/net/apf/ApfCapabilitiesTest.java
new file mode 100644
index 0000000..d50406f
--- /dev/null
+++ b/tests/common/java/android/net/apf/ApfCapabilitiesTest.java
@@ -0,0 +1,99 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.net.apf;
+
+import static com.android.testutils.ParcelUtils.assertParcelSane;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertNotEquals;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertTrue;
+
+import android.content.Context;
+
+import androidx.test.InstrumentationRegistry;
+import androidx.test.filters.SmallTest;
+import androidx.test.runner.AndroidJUnit4;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import java.util.Arrays;
+
+@RunWith(AndroidJUnit4.class)
+@SmallTest
+public class ApfCapabilitiesTest {
+    private Context mContext;
+
+    @Before
+    public void setUp() {
+        mContext = InstrumentationRegistry.getContext();
+    }
+
+    @Test
+    public void testConstructAndParcel() {
+        final ApfCapabilities caps = new ApfCapabilities(123, 456, 789);
+        assertEquals(123, caps.apfVersionSupported);
+        assertEquals(456, caps.maximumApfProgramSize);
+        assertEquals(789, caps.apfPacketFormat);
+
+        assertParcelSane(caps, 3);
+    }
+
+    @Test
+    public void testEquals() {
+        assertEquals(new ApfCapabilities(1, 2, 3), new ApfCapabilities(1, 2, 3));
+        assertNotEquals(new ApfCapabilities(2, 2, 3), new ApfCapabilities(1, 2, 3));
+        assertNotEquals(new ApfCapabilities(1, 3, 3), new ApfCapabilities(1, 2, 3));
+        assertNotEquals(new ApfCapabilities(1, 2, 4), new ApfCapabilities(1, 2, 3));
+    }
+
+    @Test
+    public void testHasDataAccess() {
+        //hasDataAccess is only supported starting at apf version 4.
+        ApfCapabilities caps = new ApfCapabilities(1 /* apfVersionSupported */, 2, 3);
+        assertFalse(caps.hasDataAccess());
+
+        caps = new ApfCapabilities(4 /* apfVersionSupported */, 5, 6);
+        assertTrue(caps.hasDataAccess());
+    }
+
+    @Test
+    public void testGetApfDrop8023Frames() {
+        // Get com.android.internal.R.bool.config_apfDrop802_3Frames. The test cannot directly
+        // use R.bool.config_apfDrop802_3Frames because that is not a stable resource ID.
+        final int resId = mContext.getResources().getIdentifier("config_apfDrop802_3Frames",
+                "bool", "android");
+        final boolean shouldDrop8023Frames = mContext.getResources().getBoolean(resId);
+        final boolean actual = ApfCapabilities.getApfDrop8023Frames();
+        assertEquals(shouldDrop8023Frames, actual);
+    }
+
+    @Test
+    public void testGetApfEtherTypeBlackList() {
+        // Get com.android.internal.R.array.config_apfEthTypeBlackList. The test cannot directly
+        // use R.array.config_apfEthTypeBlackList because that is not a stable resource ID.
+        final int resId = mContext.getResources().getIdentifier("config_apfEthTypeBlackList",
+                "array", "android");
+        final int[] blacklistedEtherTypeArray = mContext.getResources().getIntArray(resId);
+        final int[] actual = ApfCapabilities.getApfEtherTypeBlackList();
+        assertNotNull(actual);
+        assertTrue(Arrays.equals(blacklistedEtherTypeArray, actual));
+    }
+}
diff --git a/tests/common/java/android/net/metrics/ApfProgramEventTest.kt b/tests/common/java/android/net/metrics/ApfProgramEventTest.kt
new file mode 100644
index 0000000..0b7b740
--- /dev/null
+++ b/tests/common/java/android/net/metrics/ApfProgramEventTest.kt
@@ -0,0 +1,72 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.net.metrics;
+
+import androidx.test.filters.SmallTest
+import androidx.test.runner.AndroidJUnit4
+import com.android.testutils.assertParcelSane
+import org.junit.Assert.assertEquals
+import org.junit.Assert.assertFalse
+import org.junit.Assert.assertTrue
+import org.junit.Test
+import org.junit.runner.RunWith
+
+@RunWith(AndroidJUnit4::class)
+@SmallTest
+class ApfProgramEventTest {
+    private infix fun Int.hasFlag(flag: Int) = (this and (1 shl flag)) != 0
+
+    @Test
+    fun testBuilderAndParcel() {
+        val apfProgramEvent = ApfProgramEvent.Builder()
+                .setLifetime(1)
+                .setActualLifetime(2)
+                .setFilteredRas(3)
+                .setCurrentRas(4)
+                .setProgramLength(5)
+                .setFlags(true, true)
+                .build()
+
+        assertEquals(1, apfProgramEvent.lifetime)
+        assertEquals(2, apfProgramEvent.actualLifetime)
+        assertEquals(3, apfProgramEvent.filteredRas)
+        assertEquals(4, apfProgramEvent.currentRas)
+        assertEquals(5, apfProgramEvent.programLength)
+        assertEquals(ApfProgramEvent.flagsFor(true, true), apfProgramEvent.flags)
+
+        assertParcelSane(apfProgramEvent, 6)
+    }
+
+    @Test
+    fun testFlagsFor() {
+        var flags = ApfProgramEvent.flagsFor(false, false)
+        assertFalse(flags hasFlag ApfProgramEvent.FLAG_HAS_IPV4_ADDRESS)
+        assertFalse(flags hasFlag ApfProgramEvent.FLAG_MULTICAST_FILTER_ON)
+
+        flags = ApfProgramEvent.flagsFor(true, false)
+        assertTrue(flags hasFlag ApfProgramEvent.FLAG_HAS_IPV4_ADDRESS)
+        assertFalse(flags hasFlag ApfProgramEvent.FLAG_MULTICAST_FILTER_ON)
+
+        flags = ApfProgramEvent.flagsFor(false, true)
+        assertFalse(flags hasFlag ApfProgramEvent.FLAG_HAS_IPV4_ADDRESS)
+        assertTrue(flags hasFlag ApfProgramEvent.FLAG_MULTICAST_FILTER_ON)
+
+        flags = ApfProgramEvent.flagsFor(true, true)
+        assertTrue(flags hasFlag ApfProgramEvent.FLAG_HAS_IPV4_ADDRESS)
+        assertTrue(flags hasFlag ApfProgramEvent.FLAG_MULTICAST_FILTER_ON)
+    }
+}
diff --git a/tests/common/java/android/net/metrics/ApfStatsTest.kt b/tests/common/java/android/net/metrics/ApfStatsTest.kt
new file mode 100644
index 0000000..46a8c8e
--- /dev/null
+++ b/tests/common/java/android/net/metrics/ApfStatsTest.kt
@@ -0,0 +1,57 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.net.metrics
+
+import androidx.test.filters.SmallTest
+import androidx.test.runner.AndroidJUnit4
+import com.android.testutils.assertParcelSane
+import org.junit.Assert.assertEquals
+import org.junit.Test
+import org.junit.runner.RunWith
+
+@RunWith(AndroidJUnit4::class)
+@SmallTest
+class ApfStatsTest {
+    @Test
+    fun testBuilderAndParcel() {
+        val apfStats = ApfStats.Builder()
+                .setDurationMs(Long.MAX_VALUE)
+                .setReceivedRas(1)
+                .setMatchingRas(2)
+                .setDroppedRas(3)
+                .setZeroLifetimeRas(4)
+                .setParseErrors(5)
+                .setProgramUpdates(6)
+                .setProgramUpdatesAll(7)
+                .setProgramUpdatesAllowingMulticast(8)
+                .setMaxProgramSize(9)
+                .build()
+
+        assertEquals(Long.MAX_VALUE, apfStats.durationMs)
+        assertEquals(1, apfStats.receivedRas)
+        assertEquals(2, apfStats.matchingRas)
+        assertEquals(3, apfStats.droppedRas)
+        assertEquals(4, apfStats.zeroLifetimeRas)
+        assertEquals(5, apfStats.parseErrors)
+        assertEquals(6, apfStats.programUpdates)
+        assertEquals(7, apfStats.programUpdatesAll)
+        assertEquals(8, apfStats.programUpdatesAllowingMulticast)
+        assertEquals(9, apfStats.maxProgramSize)
+
+        assertParcelSane(apfStats, 10)
+    }
+}
diff --git a/tests/common/java/android/net/metrics/DhcpClientEventTest.kt b/tests/common/java/android/net/metrics/DhcpClientEventTest.kt
new file mode 100644
index 0000000..8d7a9c4
--- /dev/null
+++ b/tests/common/java/android/net/metrics/DhcpClientEventTest.kt
@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.net.metrics
+
+import androidx.test.filters.SmallTest
+import androidx.test.runner.AndroidJUnit4
+import com.android.testutils.assertParcelSane
+import org.junit.Assert.assertEquals
+import org.junit.Test
+import org.junit.runner.RunWith
+
+private const val FAKE_MESSAGE = "test"
+
+@RunWith(AndroidJUnit4::class)
+@SmallTest
+class DhcpClientEventTest {
+    @Test
+    fun testBuilderAndParcel() {
+        val dhcpClientEvent = DhcpClientEvent.Builder()
+                .setMsg(FAKE_MESSAGE)
+                .setDurationMs(Integer.MAX_VALUE)
+                .build()
+
+        assertEquals(FAKE_MESSAGE, dhcpClientEvent.msg)
+        assertEquals(Integer.MAX_VALUE, dhcpClientEvent.durationMs)
+
+        assertParcelSane(dhcpClientEvent, 2)
+    }
+}
diff --git a/tests/common/java/android/net/metrics/DhcpErrorEventTest.kt b/tests/common/java/android/net/metrics/DhcpErrorEventTest.kt
new file mode 100644
index 0000000..236f72e
--- /dev/null
+++ b/tests/common/java/android/net/metrics/DhcpErrorEventTest.kt
@@ -0,0 +1,65 @@
+package android.net.metrics
+
+import android.net.metrics.DhcpErrorEvent.DHCP_INVALID_OPTION_LENGTH
+import android.net.metrics.DhcpErrorEvent.errorCodeWithOption
+import androidx.test.filters.SmallTest
+import androidx.test.runner.AndroidJUnit4
+import com.android.testutils.parcelingRoundTrip
+import java.lang.reflect.Modifier
+import org.junit.Assert.assertEquals
+import org.junit.Assert.assertNotNull
+import org.junit.Assert.assertTrue
+import org.junit.Test
+import org.junit.runner.RunWith
+
+private const val TEST_ERROR_CODE = 12345
+//DHCP Optional Type: DHCP Subnet Mask (Copy from DhcpPacket.java due to it's protected)
+private const val DHCP_SUBNET_MASK = 1
+
+@RunWith(AndroidJUnit4::class)
+@SmallTest
+class DhcpErrorEventTest {
+
+    @Test
+    fun testConstructor() {
+        val event = DhcpErrorEvent(TEST_ERROR_CODE)
+        assertEquals(TEST_ERROR_CODE, event.errorCode)
+    }
+
+    @Test
+    fun testParcelUnparcel() {
+        val event = DhcpErrorEvent(TEST_ERROR_CODE)
+        val parceled = parcelingRoundTrip(event)
+        assertEquals(TEST_ERROR_CODE, parceled.errorCode)
+    }
+
+    @Test
+    fun testErrorCodeWithOption() {
+        val errorCode = errorCodeWithOption(DHCP_INVALID_OPTION_LENGTH, DHCP_SUBNET_MASK);
+        assertTrue((DHCP_INVALID_OPTION_LENGTH and errorCode) == DHCP_INVALID_OPTION_LENGTH);
+        assertTrue((DHCP_SUBNET_MASK and errorCode) == DHCP_SUBNET_MASK);
+    }
+
+    @Test
+    fun testToString() {
+        val names = listOf("L2_ERROR", "L3_ERROR", "L4_ERROR", "DHCP_ERROR", "MISC_ERROR")
+        val errorFields = DhcpErrorEvent::class.java.declaredFields.filter {
+            it.type == Int::class.javaPrimitiveType
+                    && Modifier.isPublic(it.modifiers) && Modifier.isStatic(it.modifiers)
+                    && it.name !in names
+        }
+
+        errorFields.forEach {
+            val intValue = it.getInt(null)
+            val stringValue = DhcpErrorEvent(intValue).toString()
+            assertTrue("Invalid string for error 0x%08X (field %s): %s".format(intValue, it.name,
+                    stringValue),
+                    stringValue.contains(it.name))
+        }
+    }
+
+    @Test
+    fun testToString_InvalidErrorCode() {
+        assertNotNull(DhcpErrorEvent(TEST_ERROR_CODE).toString())
+    }
+}
diff --git a/tests/common/java/android/net/metrics/IpConnectivityLogTest.java b/tests/common/java/android/net/metrics/IpConnectivityLogTest.java
new file mode 100644
index 0000000..d4780d3
--- /dev/null
+++ b/tests/common/java/android/net/metrics/IpConnectivityLogTest.java
@@ -0,0 +1,161 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.net.metrics;
+
+import static android.net.NetworkCapabilities.TRANSPORT_CELLULAR;
+import static android.net.NetworkCapabilities.TRANSPORT_WIFI;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
+import static org.mockito.Mockito.timeout;
+import static org.mockito.Mockito.verify;
+
+import android.net.ConnectivityMetricsEvent;
+import android.net.IIpConnectivityMetrics;
+import android.net.Network;
+
+import androidx.test.filters.SmallTest;
+import androidx.test.runner.AndroidJUnit4;
+
+import com.android.internal.util.BitUtils;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.ArgumentCaptor;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+
+import java.util.Collections;
+import java.util.Comparator;
+import java.util.Iterator;
+import java.util.List;
+
+@RunWith(AndroidJUnit4.class)
+@SmallTest
+public class IpConnectivityLogTest {
+    private static final int FAKE_NET_ID = 100;
+    private static final int[] FAKE_TRANSPORT_TYPES = BitUtils.unpackBits(TRANSPORT_WIFI);
+    private static final long FAKE_TIME_STAMP = System.currentTimeMillis();
+    private static final String FAKE_INTERFACE_NAME = "test";
+    private static final IpReachabilityEvent FAKE_EV =
+            new IpReachabilityEvent(IpReachabilityEvent.NUD_FAILED);
+
+    @Mock IIpConnectivityMetrics mMockService;
+
+    @Before
+    public void setUp() {
+        MockitoAnnotations.initMocks(this);
+    }
+
+    @Test
+    public void testLoggingEvents() throws Exception {
+        IpConnectivityLog logger = new IpConnectivityLog(mMockService);
+
+        assertTrue(logger.log(FAKE_EV));
+        assertTrue(logger.log(FAKE_TIME_STAMP, FAKE_EV));
+        assertTrue(logger.log(FAKE_NET_ID, FAKE_TRANSPORT_TYPES, FAKE_EV));
+        assertTrue(logger.log(new Network(FAKE_NET_ID), FAKE_TRANSPORT_TYPES, FAKE_EV));
+        assertTrue(logger.log(FAKE_INTERFACE_NAME, FAKE_EV));
+        assertTrue(logger.log(makeExpectedEvent(FAKE_TIME_STAMP, FAKE_NET_ID, TRANSPORT_WIFI,
+                FAKE_INTERFACE_NAME)));
+
+        List<ConnectivityMetricsEvent> got = verifyEvents(6);
+        assertEventsEqual(makeExpectedEvent(got.get(0).timestamp, 0, 0, null), got.get(0));
+        assertEventsEqual(makeExpectedEvent(FAKE_TIME_STAMP, 0, 0, null), got.get(1));
+        assertEventsEqual(makeExpectedEvent(got.get(2).timestamp, FAKE_NET_ID,
+                TRANSPORT_WIFI, null), got.get(2));
+        assertEventsEqual(makeExpectedEvent(got.get(3).timestamp, FAKE_NET_ID,
+                TRANSPORT_WIFI, null), got.get(3));
+        assertEventsEqual(makeExpectedEvent(got.get(4).timestamp, 0, 0, FAKE_INTERFACE_NAME),
+                got.get(4));
+        assertEventsEqual(makeExpectedEvent(FAKE_TIME_STAMP, FAKE_NET_ID,
+                TRANSPORT_WIFI, FAKE_INTERFACE_NAME), got.get(5));
+    }
+
+    @Test
+    public void testLoggingEventsWithMultipleCallers() throws Exception {
+        IpConnectivityLog logger = new IpConnectivityLog(mMockService);
+
+        final int nCallers = 10;
+        final int nEvents = 10;
+        for (int n = 0; n < nCallers; n++) {
+            final int i = n;
+            new Thread() {
+                public void run() {
+                    for (int j = 0; j < nEvents; j++) {
+                        assertTrue(logger.log(makeExpectedEvent(
+                                FAKE_TIME_STAMP + i * 100 + j,
+                                FAKE_NET_ID + i * 100 + j,
+                                ((i + j) % 2 == 0) ? TRANSPORT_WIFI : TRANSPORT_CELLULAR,
+                                FAKE_INTERFACE_NAME)));
+                    }
+                }
+            }.start();
+        }
+
+        List<ConnectivityMetricsEvent> got = verifyEvents(nCallers * nEvents, 200);
+        Collections.sort(got, EVENT_COMPARATOR);
+        Iterator<ConnectivityMetricsEvent> iter = got.iterator();
+        for (int i = 0; i < nCallers; i++) {
+            for (int j = 0; j < nEvents; j++) {
+                final long expectedTimestamp = FAKE_TIME_STAMP + i * 100 + j;
+                final int expectedNetId = FAKE_NET_ID + i * 100 + j;
+                final long expectedTransports =
+                        ((i + j) % 2 == 0) ? TRANSPORT_WIFI : TRANSPORT_CELLULAR;
+                assertEventsEqual(makeExpectedEvent(expectedTimestamp, expectedNetId,
+                        expectedTransports, FAKE_INTERFACE_NAME), iter.next());
+            }
+        }
+    }
+
+    private List<ConnectivityMetricsEvent> verifyEvents(int n, int timeoutMs) throws Exception {
+        ArgumentCaptor<ConnectivityMetricsEvent> captor =
+                ArgumentCaptor.forClass(ConnectivityMetricsEvent.class);
+        verify(mMockService, timeout(timeoutMs).times(n)).logEvent(captor.capture());
+        return captor.getAllValues();
+    }
+
+    private List<ConnectivityMetricsEvent> verifyEvents(int n) throws Exception {
+        return verifyEvents(n, 10);
+    }
+
+
+    private ConnectivityMetricsEvent makeExpectedEvent(long timestamp, int netId, long transports,
+            String ifname) {
+        ConnectivityMetricsEvent ev = new ConnectivityMetricsEvent();
+        ev.timestamp = timestamp;
+        ev.data = FAKE_EV;
+        ev.netId = netId;
+        ev.transports = transports;
+        ev.ifname = ifname;
+        return ev;
+    }
+
+    /** Outer equality for ConnectivityMetricsEvent to avoid overriding equals() and hashCode(). */
+    private void assertEventsEqual(ConnectivityMetricsEvent expected,
+            ConnectivityMetricsEvent got) {
+        assertEquals(expected.data, got.data);
+        assertEquals(expected.timestamp, got.timestamp);
+        assertEquals(expected.netId, got.netId);
+        assertEquals(expected.transports, got.transports);
+        assertEquals(expected.ifname, got.ifname);
+    }
+
+    static final Comparator<ConnectivityMetricsEvent> EVENT_COMPARATOR =
+            Comparator.comparingLong((ev) -> ev.timestamp);
+}
diff --git a/tests/common/java/android/net/metrics/IpManagerEventTest.kt b/tests/common/java/android/net/metrics/IpManagerEventTest.kt
new file mode 100644
index 0000000..64be508
--- /dev/null
+++ b/tests/common/java/android/net/metrics/IpManagerEventTest.kt
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.net.metrics
+
+import androidx.test.filters.SmallTest
+import androidx.test.runner.AndroidJUnit4
+import com.android.testutils.assertParcelSane
+import org.junit.Assert.assertEquals
+import org.junit.Test
+import org.junit.runner.RunWith
+
+@RunWith(AndroidJUnit4::class)
+@SmallTest
+class IpManagerEventTest {
+    @Test
+    fun testConstructorAndParcel() {
+        (IpManagerEvent.PROVISIONING_OK..IpManagerEvent.ERROR_INTERFACE_NOT_FOUND).forEach {
+            val ipManagerEvent = IpManagerEvent(it, Long.MAX_VALUE)
+            assertEquals(it, ipManagerEvent.eventType)
+            assertEquals(Long.MAX_VALUE, ipManagerEvent.durationMs)
+
+            assertParcelSane(ipManagerEvent, 2)
+        }
+    }
+}
diff --git a/tests/common/java/android/net/metrics/IpReachabilityEventTest.kt b/tests/common/java/android/net/metrics/IpReachabilityEventTest.kt
new file mode 100644
index 0000000..55b5e49
--- /dev/null
+++ b/tests/common/java/android/net/metrics/IpReachabilityEventTest.kt
@@ -0,0 +1,38 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.net.metrics
+
+import androidx.test.filters.SmallTest
+import androidx.test.runner.AndroidJUnit4
+import com.android.testutils.assertParcelSane
+import org.junit.Assert.assertEquals
+import org.junit.Test
+import org.junit.runner.RunWith
+
+@RunWith(AndroidJUnit4::class)
+@SmallTest
+class IpReachabilityEventTest {
+    @Test
+    fun testConstructorAndParcel() {
+        (IpReachabilityEvent.PROBE..IpReachabilityEvent.PROVISIONING_LOST_ORGANIC).forEach {
+            val ipReachabilityEvent = IpReachabilityEvent(it)
+            assertEquals(it, ipReachabilityEvent.eventType)
+
+            assertParcelSane(ipReachabilityEvent, 1)
+        }
+    }
+}
diff --git a/tests/common/java/android/net/metrics/NetworkEventTest.kt b/tests/common/java/android/net/metrics/NetworkEventTest.kt
new file mode 100644
index 0000000..41430b0
--- /dev/null
+++ b/tests/common/java/android/net/metrics/NetworkEventTest.kt
@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.net.metrics
+
+import androidx.test.filters.SmallTest
+import androidx.test.runner.AndroidJUnit4
+import com.android.testutils.assertParcelSane
+import org.junit.Assert.assertEquals
+import org.junit.Test
+import org.junit.runner.RunWith
+
+@RunWith(AndroidJUnit4::class)
+@SmallTest
+class NetworkEventTest {
+    @Test
+    fun testConstructorAndParcel() {
+        (NetworkEvent.NETWORK_CONNECTED..NetworkEvent.NETWORK_PARTIAL_CONNECTIVITY).forEach {
+            var networkEvent = NetworkEvent(it)
+            assertEquals(it, networkEvent.eventType)
+            assertEquals(0, networkEvent.durationMs)
+
+            networkEvent = NetworkEvent(it, Long.MAX_VALUE)
+            assertEquals(it, networkEvent.eventType)
+            assertEquals(Long.MAX_VALUE, networkEvent.durationMs)
+
+            assertParcelSane(networkEvent, 2)
+        }
+    }
+}
diff --git a/tests/common/java/android/net/metrics/RaEventTest.kt b/tests/common/java/android/net/metrics/RaEventTest.kt
new file mode 100644
index 0000000..d9b7203
--- /dev/null
+++ b/tests/common/java/android/net/metrics/RaEventTest.kt
@@ -0,0 +1,72 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.net.metrics
+
+import androidx.test.filters.SmallTest
+import androidx.test.runner.AndroidJUnit4
+import com.android.testutils.assertParcelSane
+import org.junit.Assert.assertEquals
+import org.junit.Test
+import org.junit.runner.RunWith
+
+private const val NO_LIFETIME: Long = -1L
+
+@RunWith(AndroidJUnit4::class)
+@SmallTest
+class RaEventTest {
+    @Test
+    fun testConstructorAndParcel() {
+        var raEvent = RaEvent.Builder().build()
+        assertEquals(NO_LIFETIME, raEvent.routerLifetime)
+        assertEquals(NO_LIFETIME, raEvent.prefixValidLifetime)
+        assertEquals(NO_LIFETIME, raEvent.prefixPreferredLifetime)
+        assertEquals(NO_LIFETIME, raEvent.routeInfoLifetime)
+        assertEquals(NO_LIFETIME, raEvent.rdnssLifetime)
+        assertEquals(NO_LIFETIME, raEvent.dnsslLifetime)
+
+        raEvent = RaEvent.Builder()
+                .updateRouterLifetime(1)
+                .updatePrefixValidLifetime(2)
+                .updatePrefixPreferredLifetime(3)
+                .updateRouteInfoLifetime(4)
+                .updateRdnssLifetime(5)
+                .updateDnsslLifetime(6)
+                .build()
+        assertEquals(1, raEvent.routerLifetime)
+        assertEquals(2, raEvent.prefixValidLifetime)
+        assertEquals(3, raEvent.prefixPreferredLifetime)
+        assertEquals(4, raEvent.routeInfoLifetime)
+        assertEquals(5, raEvent.rdnssLifetime)
+        assertEquals(6, raEvent.dnsslLifetime)
+
+        raEvent = RaEvent.Builder()
+                .updateRouterLifetime(Long.MIN_VALUE)
+                .updateRouterLifetime(Long.MAX_VALUE)
+                .build()
+        assertEquals(Long.MIN_VALUE, raEvent.routerLifetime)
+
+        raEvent = RaEvent(1, 2, 3, 4, 5, 6)
+        assertEquals(1, raEvent.routerLifetime)
+        assertEquals(2, raEvent.prefixValidLifetime)
+        assertEquals(3, raEvent.prefixPreferredLifetime)
+        assertEquals(4, raEvent.routeInfoLifetime)
+        assertEquals(5, raEvent.rdnssLifetime)
+        assertEquals(6, raEvent.dnsslLifetime)
+
+        assertParcelSane(raEvent, 6)
+    }
+}
diff --git a/tests/common/java/android/net/metrics/ValidationProbeEventTest.kt b/tests/common/java/android/net/metrics/ValidationProbeEventTest.kt
new file mode 100644
index 0000000..51c0d41
--- /dev/null
+++ b/tests/common/java/android/net/metrics/ValidationProbeEventTest.kt
@@ -0,0 +1,72 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.net.metrics
+
+import androidx.test.filters.SmallTest
+import androidx.test.runner.AndroidJUnit4
+import com.android.testutils.assertParcelSane
+import java.lang.reflect.Modifier
+import org.junit.Assert.assertEquals
+import org.junit.Assert.assertTrue
+import org.junit.Test
+import org.junit.runner.RunWith
+
+private const val FIRST_VALIDATION: Int = 1 shl 8
+private const val REVALIDATION: Int = 2 shl 8
+
+@RunWith(AndroidJUnit4::class)
+@SmallTest
+class ValidationProbeEventTest {
+    private infix fun Int.hasType(type: Int) = (type and this) == type
+
+    @Test
+    fun testBuilderAndParcel() {
+        var validationProbeEvent = ValidationProbeEvent.Builder()
+                .setProbeType(ValidationProbeEvent.PROBE_DNS, false).build()
+
+        assertTrue(validationProbeEvent.probeType hasType REVALIDATION)
+
+        validationProbeEvent = ValidationProbeEvent.Builder()
+                .setDurationMs(Long.MAX_VALUE)
+                .setProbeType(ValidationProbeEvent.PROBE_DNS, true)
+                .setReturnCode(ValidationProbeEvent.DNS_SUCCESS)
+                .build()
+
+        assertEquals(Long.MAX_VALUE, validationProbeEvent.durationMs)
+        assertTrue(validationProbeEvent.probeType hasType ValidationProbeEvent.PROBE_DNS)
+        assertTrue(validationProbeEvent.probeType hasType FIRST_VALIDATION)
+        assertEquals(ValidationProbeEvent.DNS_SUCCESS, validationProbeEvent.returnCode)
+
+        assertParcelSane(validationProbeEvent, 3)
+    }
+
+    @Test
+    fun testGetProbeName() {
+        val probeFields = ValidationProbeEvent::class.java.declaredFields.filter {
+            it.type == Int::class.javaPrimitiveType
+              && Modifier.isPublic(it.modifiers) && Modifier.isStatic(it.modifiers)
+              && it.name.contains("PROBE")
+        }
+
+        probeFields.forEach {
+            val intValue = it.getInt(null)
+            val stringValue = ValidationProbeEvent.getProbeName(intValue)
+            assertEquals(it.name, stringValue)
+        }
+
+    }
+}
diff --git a/tests/common/java/android/net/netstats/NetworkStatsApiTest.kt b/tests/common/java/android/net/netstats/NetworkStatsApiTest.kt
new file mode 100644
index 0000000..7b22e45
--- /dev/null
+++ b/tests/common/java/android/net/netstats/NetworkStatsApiTest.kt
@@ -0,0 +1,209 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.net.netstats
+
+import android.net.NetworkStats
+import android.net.NetworkStats.DEFAULT_NETWORK_NO
+import android.net.NetworkStats.DEFAULT_NETWORK_YES
+import android.net.NetworkStats.Entry
+import android.net.NetworkStats.IFACE_VT
+import android.net.NetworkStats.METERED_NO
+import android.net.NetworkStats.METERED_YES
+import android.net.NetworkStats.ROAMING_NO
+import android.net.NetworkStats.ROAMING_YES
+import android.net.NetworkStats.SET_DEFAULT
+import android.net.NetworkStats.SET_FOREGROUND
+import android.net.NetworkStats.TAG_NONE
+import android.os.Build
+import androidx.test.filters.SmallTest
+import com.android.testutils.DevSdkIgnoreRule
+import com.android.testutils.assertFieldCountEquals
+import com.android.testutils.assertNetworkStatsEquals
+import com.android.testutils.assertParcelingIsLossless
+import org.junit.Before
+import org.junit.Rule
+import org.junit.Test
+import org.junit.runner.RunWith
+import org.junit.runners.JUnit4
+import kotlin.test.assertEquals
+
+@RunWith(JUnit4::class)
+@SmallTest
+class NetworkStatsApiTest {
+    @Rule
+    @JvmField
+    val ignoreRule = DevSdkIgnoreRule(ignoreClassUpTo = Build.VERSION_CODES.Q)
+
+    private val testStatsEmpty = NetworkStats(0L, 0)
+
+    // Note that these variables need to be initialized outside of constructor, initialize
+    // here with methods that don't exist in Q devices will result in crash.
+
+    // stats1 and stats2 will have some entries with common keys, which are expected to
+    // be merged if performing add on these 2 stats.
+    private lateinit var testStats1: NetworkStats
+    private lateinit var testStats2: NetworkStats
+
+    // This is a result of adding stats1 and stats2, while the merging of common key items is
+    // subject to test later, this should not be initialized with for a loop to add stats1
+    // and stats2 above.
+    private lateinit var testStats3: NetworkStats
+
+    companion object {
+        private const val TEST_IFACE = "test0"
+        private const val TEST_UID1 = 1001
+        private const val TEST_UID2 = 1002
+    }
+
+    @Before
+    fun setUp() {
+        testStats1 = NetworkStats(0L, 0)
+                // Entries which only appear in set1.
+                .addEntry(Entry(TEST_IFACE, TEST_UID1, SET_DEFAULT, TAG_NONE,
+                        METERED_NO, ROAMING_NO, DEFAULT_NETWORK_YES, 20, 3, 57, 40, 3))
+                .addEntry(Entry(TEST_IFACE, TEST_UID1, SET_DEFAULT, TAG_NONE,
+                        METERED_NO, ROAMING_YES, DEFAULT_NETWORK_NO, 31, 7, 24, 5, 8))
+                .addEntry(Entry(TEST_IFACE, TEST_UID1, SET_DEFAULT, TAG_NONE,
+                        METERED_YES, ROAMING_NO, DEFAULT_NETWORK_NO, 25, 3, 47, 8, 2))
+                .addEntry(Entry(TEST_IFACE, TEST_UID1, SET_FOREGROUND, TAG_NONE,
+                        METERED_NO, ROAMING_NO, DEFAULT_NETWORK_NO, 37, 52, 1, 10, 4))
+                // Entries which are common for set1 and set2.
+                .addEntry(Entry(TEST_IFACE, TEST_UID1, SET_DEFAULT, TAG_NONE,
+                        METERED_NO, ROAMING_NO, DEFAULT_NETWORK_NO, 101, 2, 103, 4, 5))
+                .addEntry(Entry(TEST_IFACE, TEST_UID1, SET_DEFAULT, 0x80,
+                        METERED_NO, ROAMING_NO, DEFAULT_NETWORK_NO, 17, 2, 11, 1, 0))
+                .addEntry(Entry(TEST_IFACE, TEST_UID2, SET_DEFAULT, TAG_NONE,
+                        METERED_NO, ROAMING_NO, DEFAULT_NETWORK_NO, 40, 1, 0, 0, 8))
+                .addEntry(Entry(IFACE_VT, TEST_UID1, SET_DEFAULT, TAG_NONE,
+                        METERED_NO, ROAMING_NO, DEFAULT_NETWORK_NO, 3, 1, 6, 2, 0))
+        assertEquals(8, testStats1.size())
+
+        testStats2 = NetworkStats(0L, 0)
+                // Entries which are common for set1 and set2.
+                .addEntry(Entry(TEST_IFACE, TEST_UID1, SET_DEFAULT, 0x80,
+                        METERED_NO, ROAMING_NO, DEFAULT_NETWORK_NO, 3, 15, 2, 31, 1))
+                .addEntry(Entry(TEST_IFACE, TEST_UID1, SET_FOREGROUND, TAG_NONE,
+                        METERED_NO, ROAMING_NO, DEFAULT_NETWORK_NO, 13, 61, 10, 1, 45))
+                .addEntry(Entry(TEST_IFACE, TEST_UID2, SET_DEFAULT, TAG_NONE,
+                        METERED_NO, ROAMING_NO, DEFAULT_NETWORK_NO, 11, 2, 3, 4, 7))
+                .addEntry(Entry(IFACE_VT, TEST_UID1, SET_DEFAULT, TAG_NONE,
+                        METERED_NO, ROAMING_NO, DEFAULT_NETWORK_NO, 4, 3, 2, 1, 0))
+                // Entry which only appears in set2.
+                .addEntry(Entry(IFACE_VT, TEST_UID2, SET_DEFAULT, TAG_NONE,
+                        METERED_NO, ROAMING_NO, DEFAULT_NETWORK_NO, 2, 3, 7, 8, 0))
+        assertEquals(5, testStats2.size())
+
+        testStats3 = NetworkStats(0L, 9)
+                // Entries which are unique either in stats1 or stats2.
+                .addEntry(Entry(TEST_IFACE, TEST_UID1, SET_DEFAULT, TAG_NONE,
+                        METERED_NO, ROAMING_NO, DEFAULT_NETWORK_NO, 101, 2, 103, 4, 5))
+                .addEntry(Entry(TEST_IFACE, TEST_UID1, SET_DEFAULT, TAG_NONE,
+                        METERED_NO, ROAMING_YES, DEFAULT_NETWORK_NO, 31, 7, 24, 5, 8))
+                .addEntry(Entry(TEST_IFACE, TEST_UID1, SET_DEFAULT, TAG_NONE,
+                        METERED_YES, ROAMING_NO, DEFAULT_NETWORK_NO, 25, 3, 47, 8, 2))
+                .addEntry(Entry(IFACE_VT, TEST_UID2, SET_DEFAULT, TAG_NONE,
+                        METERED_NO, ROAMING_NO, DEFAULT_NETWORK_NO, 2, 3, 7, 8, 0))
+                // Entries which are common for stats1 and stats2 are being merged.
+                .addEntry(Entry(TEST_IFACE, TEST_UID1, SET_DEFAULT, TAG_NONE,
+                        METERED_NO, ROAMING_NO, DEFAULT_NETWORK_YES, 20, 3, 57, 40, 3))
+                .addEntry(Entry(TEST_IFACE, TEST_UID1, SET_DEFAULT, 0x80,
+                        METERED_NO, ROAMING_NO, DEFAULT_NETWORK_NO, 20, 17, 13, 32, 1))
+                .addEntry(Entry(TEST_IFACE, TEST_UID1, SET_FOREGROUND, TAG_NONE,
+                        METERED_NO, ROAMING_NO, DEFAULT_NETWORK_NO, 50, 113, 11, 11, 49))
+                .addEntry(Entry(TEST_IFACE, TEST_UID2, SET_DEFAULT, TAG_NONE,
+                        METERED_NO, ROAMING_NO, DEFAULT_NETWORK_NO, 51, 3, 3, 4, 15))
+                .addEntry(Entry(IFACE_VT, TEST_UID1, SET_DEFAULT, TAG_NONE,
+                        METERED_NO, ROAMING_NO, DEFAULT_NETWORK_NO, 7, 4, 8, 3, 0))
+        assertEquals(9, testStats3.size())
+    }
+
+    @Test
+    fun testAddEntry() {
+        val expectedEntriesInStats2 = arrayOf(
+                Entry(TEST_IFACE, TEST_UID1, SET_DEFAULT, 0x80,
+                        METERED_NO, ROAMING_NO, DEFAULT_NETWORK_NO, 3, 15, 2, 31, 1),
+                Entry(TEST_IFACE, TEST_UID1, SET_FOREGROUND, TAG_NONE,
+                        METERED_NO, ROAMING_NO, DEFAULT_NETWORK_NO, 13, 61, 10, 1, 45),
+                Entry(TEST_IFACE, TEST_UID2, SET_DEFAULT, TAG_NONE,
+                        METERED_NO, ROAMING_NO, DEFAULT_NETWORK_NO, 11, 2, 3, 4, 7),
+                Entry(IFACE_VT, TEST_UID1, SET_DEFAULT, TAG_NONE,
+                        METERED_NO, ROAMING_NO, DEFAULT_NETWORK_NO, 4, 3, 2, 1, 0),
+                Entry(IFACE_VT, TEST_UID2, SET_DEFAULT, TAG_NONE,
+                        METERED_NO, ROAMING_NO, DEFAULT_NETWORK_NO, 2, 3, 7, 8, 0))
+
+        // While testStats* are already initialized with addEntry, verify content added
+        // matches expectation.
+        for (i in expectedEntriesInStats2.indices) {
+            val entry = testStats2.getValues(i, null)
+            assertEquals(expectedEntriesInStats2[i], entry)
+        }
+
+        // Verify entry updated with addEntry.
+        val stats = testStats2.addEntry(Entry(IFACE_VT, TEST_UID1, SET_DEFAULT, TAG_NONE,
+                METERED_NO, ROAMING_NO, DEFAULT_NETWORK_NO, 12, -5, 7, 0, 9))
+        assertEquals(Entry(IFACE_VT, TEST_UID1, SET_DEFAULT, TAG_NONE,
+                METERED_NO, ROAMING_NO, DEFAULT_NETWORK_NO, 16, -2, 9, 1, 9),
+                stats.getValues(3, null))
+    }
+
+    @Test
+    fun testAdd() {
+        var stats = NetworkStats(0L, 0)
+        assertNetworkStatsEquals(testStatsEmpty, stats)
+        stats = stats.add(testStats2)
+        assertNetworkStatsEquals(testStats2, stats)
+        stats = stats.add(testStats1)
+        // EMPTY + STATS2 + STATS1 = STATS3
+        assertNetworkStatsEquals(testStats3, stats)
+    }
+
+    @Test
+    fun testParcelUnparcel() {
+        assertParcelingIsLossless(testStatsEmpty)
+        assertParcelingIsLossless(testStats1)
+        assertParcelingIsLossless(testStats2)
+        assertFieldCountEquals(15, NetworkStats::class.java)
+    }
+
+    @Test
+    fun testDescribeContents() {
+        assertEquals(0, testStatsEmpty.describeContents())
+        assertEquals(0, testStats1.describeContents())
+        assertEquals(0, testStats2.describeContents())
+        assertEquals(0, testStats3.describeContents())
+    }
+
+    @Test
+    fun testSubtract() {
+        // STATS3 - STATS2 = STATS1
+        assertNetworkStatsEquals(testStats1, testStats3.subtract(testStats2))
+        // STATS3 - STATS1 = STATS2
+        assertNetworkStatsEquals(testStats2, testStats3.subtract(testStats1))
+    }
+
+    @Test
+    fun testMethodsDontModifyReceiver() {
+        listOf(testStatsEmpty, testStats1, testStats2, testStats3).forEach {
+            val origStats = it.clone()
+            it.addEntry(Entry(TEST_IFACE, TEST_UID1, SET_FOREGROUND, TAG_NONE,
+                    METERED_NO, ROAMING_NO, DEFAULT_NETWORK_NO, 13, 61, 10, 1, 45))
+            it.add(testStats3)
+            it.subtract(testStats1)
+            assertNetworkStatsEquals(origStats, it)
+        }
+    }
+}
\ No newline at end of file
diff --git a/tests/common/java/android/net/util/SocketUtilsTest.kt b/tests/common/java/android/net/util/SocketUtilsTest.kt
new file mode 100644
index 0000000..aaf97f3
--- /dev/null
+++ b/tests/common/java/android/net/util/SocketUtilsTest.kt
@@ -0,0 +1,90 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.net.util
+
+import android.os.Build
+import android.system.NetlinkSocketAddress
+import android.system.Os
+import android.system.OsConstants.AF_INET
+import android.system.OsConstants.ETH_P_ALL
+import android.system.OsConstants.IPPROTO_UDP
+import android.system.OsConstants.RTMGRP_NEIGH
+import android.system.OsConstants.SOCK_DGRAM
+import android.system.PacketSocketAddress
+import androidx.test.filters.SmallTest
+import androidx.test.runner.AndroidJUnit4
+import com.android.testutils.DevSdkIgnoreRule
+import com.android.testutils.DevSdkIgnoreRule.IgnoreUpTo
+import org.junit.Assert.assertEquals
+import org.junit.Assert.assertFalse
+import org.junit.Assert.assertTrue
+import org.junit.Assert.fail
+import org.junit.Rule
+import org.junit.Test
+import org.junit.runner.RunWith
+
+private const val TEST_INDEX = 123
+private const val TEST_PORT = 555
+private const val FF_BYTE = 0xff.toByte()
+
+@RunWith(AndroidJUnit4::class)
+@SmallTest
+class SocketUtilsTest {
+    @Rule @JvmField
+    val ignoreRule = DevSdkIgnoreRule()
+
+    @Test
+    fun testMakeNetlinkSocketAddress() {
+        val nlAddress = SocketUtils.makeNetlinkSocketAddress(TEST_PORT, RTMGRP_NEIGH)
+        if (nlAddress is NetlinkSocketAddress) {
+            assertEquals(TEST_PORT, nlAddress.getPortId())
+            assertEquals(RTMGRP_NEIGH, nlAddress.getGroupsMask())
+        } else {
+            fail("Not NetlinkSocketAddress object")
+        }
+    }
+
+    @Test
+    fun testMakePacketSocketAddress_Q() {
+        val pkAddress = SocketUtils.makePacketSocketAddress(ETH_P_ALL, TEST_INDEX)
+        assertTrue("Not PacketSocketAddress object", pkAddress is PacketSocketAddress)
+
+        val pkAddress2 = SocketUtils.makePacketSocketAddress(TEST_INDEX, ByteArray(6) { FF_BYTE })
+        assertTrue("Not PacketSocketAddress object", pkAddress2 is PacketSocketAddress)
+    }
+
+    @Test @IgnoreUpTo(Build.VERSION_CODES.Q)
+    fun testMakePacketSocketAddress() {
+        val pkAddress = SocketUtils.makePacketSocketAddress(
+                ETH_P_ALL, TEST_INDEX, ByteArray(6) { FF_BYTE })
+        assertTrue("Not PacketSocketAddress object", pkAddress is PacketSocketAddress)
+    }
+
+    @Test
+    fun testCloseSocket() {
+        // Expect no exception happening with null object.
+        SocketUtils.closeSocket(null)
+
+        val fd = Os.socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP)
+        assertTrue(fd.valid())
+        SocketUtils.closeSocket(fd)
+        assertFalse(fd.valid())
+        // Expecting socket should be still invalid even closed socket again.
+        SocketUtils.closeSocket(fd)
+        assertFalse(fd.valid())
+    }
+}