diff --git a/tests/cts/net/ipsec/src/android/net/ipsec/ike/cts/ChildSessionParamsTest.java b/tests/cts/net/ipsec/src/android/net/ipsec/ike/cts/ChildSessionParamsTest.java
new file mode 100644
index 0000000..3163552
--- /dev/null
+++ b/tests/cts/net/ipsec/src/android/net/ipsec/ike/cts/ChildSessionParamsTest.java
@@ -0,0 +1,140 @@
+/*
+ * 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.ipsec.ike.cts;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
+
+import android.net.ipsec.ike.ChildSaProposal;
+import android.net.ipsec.ike.ChildSessionParams;
+import android.net.ipsec.ike.TransportModeChildSessionParams;
+import android.net.ipsec.ike.TunnelModeChildSessionParams;
+
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import java.util.Arrays;
+import java.util.concurrent.TimeUnit;
+
+@RunWith(AndroidJUnit4.class)
+public class ChildSessionParamsTest extends IkeTestBase {
+    private static final int HARD_LIFETIME_SECONDS = (int) TimeUnit.HOURS.toSeconds(3L);
+    private static final int SOFT_LIFETIME_SECONDS = (int) TimeUnit.HOURS.toSeconds(1L);
+
+    // Random proposal. Content doesn't matter
+    private final ChildSaProposal mSaProposal =
+            SaProposalTest.buildChildSaProposalWithCombinedModeCipher();
+
+    private void verifyTunnelModeChildParamsWithDefaultValues(ChildSessionParams childParams) {
+        assertTrue(childParams instanceof TunnelModeChildSessionParams);
+        verifyChildParamsWithDefaultValues(childParams);
+    }
+
+    private void verifyTunnelModeChildParamsWithCustomizedValues(ChildSessionParams childParams) {
+        assertTrue(childParams instanceof TunnelModeChildSessionParams);
+        verifyChildParamsWithCustomizedValues(childParams);
+    }
+
+    private void verifyTransportModeChildParamsWithDefaultValues(ChildSessionParams childParams) {
+        assertTrue(childParams instanceof TransportModeChildSessionParams);
+        verifyChildParamsWithDefaultValues(childParams);
+    }
+
+    private void verifyTransportModeChildParamsWithCustomizedValues(
+            ChildSessionParams childParams) {
+        assertTrue(childParams instanceof TransportModeChildSessionParams);
+        verifyChildParamsWithCustomizedValues(childParams);
+    }
+
+    private void verifyChildParamsWithDefaultValues(ChildSessionParams childParams) {
+        assertEquals(Arrays.asList(mSaProposal), childParams.getSaProposals());
+
+        // Do not do assertEquals to the default values to be avoid being a change-detector test
+        assertTrue(childParams.getHardLifetimeSeconds() > childParams.getSoftLifetimeSeconds());
+        assertTrue(childParams.getSoftLifetimeSeconds() > 0);
+
+        assertEquals(
+                Arrays.asList(DEFAULT_V4_TS, DEFAULT_V6_TS),
+                childParams.getInboundTrafficSelectors());
+        assertEquals(
+                Arrays.asList(DEFAULT_V4_TS, DEFAULT_V6_TS),
+                childParams.getOutboundTrafficSelectors());
+    }
+
+    private void verifyChildParamsWithCustomizedValues(ChildSessionParams childParams) {
+        assertEquals(Arrays.asList(mSaProposal), childParams.getSaProposals());
+
+        assertEquals(HARD_LIFETIME_SECONDS, childParams.getHardLifetimeSeconds());
+        assertEquals(SOFT_LIFETIME_SECONDS, childParams.getSoftLifetimeSeconds());
+
+        assertEquals(
+                Arrays.asList(INBOUND_V4_TS, INBOUND_V6_TS),
+                childParams.getInboundTrafficSelectors());
+        assertEquals(
+                Arrays.asList(OUTBOUND_V4_TS, OUTBOUND_V6_TS),
+                childParams.getOutboundTrafficSelectors());
+    }
+
+    @Test
+    public void testBuildTransportModeParamsWithDefaultValues() {
+        TransportModeChildSessionParams childParams =
+                new TransportModeChildSessionParams.Builder().addSaProposal(mSaProposal).build();
+
+        verifyTransportModeChildParamsWithDefaultValues(childParams);
+    }
+
+    @Test
+    public void testBuildTunnelModeParamsWithDefaultValues() {
+        TunnelModeChildSessionParams childParams =
+                new TunnelModeChildSessionParams.Builder().addSaProposal(mSaProposal).build();
+
+        verifyTunnelModeChildParamsWithDefaultValues(childParams);
+        assertTrue(childParams.getConfigurationRequests().isEmpty());
+    }
+
+    @Test
+    public void testBuildTransportModeParamsWithCustomizedValues() {
+        TransportModeChildSessionParams childParams =
+                new TransportModeChildSessionParams.Builder()
+                        .addSaProposal(mSaProposal)
+                        .setLifetimeSeconds(HARD_LIFETIME_SECONDS, SOFT_LIFETIME_SECONDS)
+                        .addInboundTrafficSelectors(INBOUND_V4_TS)
+                        .addInboundTrafficSelectors(INBOUND_V6_TS)
+                        .addOutboundTrafficSelectors(OUTBOUND_V4_TS)
+                        .addOutboundTrafficSelectors(OUTBOUND_V6_TS)
+                        .build();
+
+        verifyTransportModeChildParamsWithCustomizedValues(childParams);
+    }
+
+    @Test
+    public void testBuildTunnelModeParamsWithCustomizedValues() {
+        TunnelModeChildSessionParams childParams =
+                new TunnelModeChildSessionParams.Builder()
+                        .addSaProposal(mSaProposal)
+                        .setLifetimeSeconds(HARD_LIFETIME_SECONDS, SOFT_LIFETIME_SECONDS)
+                        .addInboundTrafficSelectors(INBOUND_V4_TS)
+                        .addInboundTrafficSelectors(INBOUND_V6_TS)
+                        .addOutboundTrafficSelectors(OUTBOUND_V4_TS)
+                        .addOutboundTrafficSelectors(OUTBOUND_V6_TS)
+                        .build();
+
+        verifyTunnelModeChildParamsWithCustomizedValues(childParams);
+    }
+}
diff --git a/tests/cts/net/ipsec/src/android/net/ipsec/ike/cts/IkeTestBase.java b/tests/cts/net/ipsec/src/android/net/ipsec/ike/cts/IkeTestBase.java
new file mode 100644
index 0000000..d4b431e
--- /dev/null
+++ b/tests/cts/net/ipsec/src/android/net/ipsec/ike/cts/IkeTestBase.java
@@ -0,0 +1,83 @@
+/*
+ * 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.ipsec.ike.cts;
+
+import android.net.InetAddresses;
+import android.net.ipsec.ike.IkeTrafficSelector;
+
+import java.net.Inet4Address;
+import java.net.Inet6Address;
+
+/** Shared parameters and util methods for testing different components of IKE */
+abstract class IkeTestBase {
+    private static final int MIN_PORT = 0;
+    private static final int MAX_PORT = 65535;
+    private static final int INBOUND_TS_START_PORT = MIN_PORT;
+    private static final int INBOUND_TS_END_PORT = 65520;
+    private static final int OUTBOUND_TS_START_PORT = 16;
+    private static final int OUTBOUND_TS_END_PORT = MAX_PORT;
+
+    static final int IP4_PREFIX_LEN = 32;
+    static final int IP6_PREFIX_LEN = 64;
+
+    static final Inet4Address IPV4_ADDRESS_LOCAL =
+            (Inet4Address) (InetAddresses.parseNumericAddress("192.0.2.100"));
+    static final Inet4Address IPV4_ADDRESS_REMOTE =
+            (Inet4Address) (InetAddresses.parseNumericAddress("198.51.100.100"));
+    static final Inet6Address IPV6_ADDRESS_LOCAL =
+            (Inet6Address) (InetAddresses.parseNumericAddress("2001:db8::100"));
+    static final Inet6Address IPV6_ADDRESS_REMOTE =
+            (Inet6Address) (InetAddresses.parseNumericAddress("2001:db8:255::100"));
+
+    static final IkeTrafficSelector DEFAULT_V4_TS =
+            new IkeTrafficSelector(
+                    MIN_PORT,
+                    MAX_PORT,
+                    InetAddresses.parseNumericAddress("0.0.0.0"),
+                    InetAddresses.parseNumericAddress("255.255.255.255"));
+    static final IkeTrafficSelector DEFAULT_V6_TS =
+            new IkeTrafficSelector(
+                    MIN_PORT,
+                    MAX_PORT,
+                    InetAddresses.parseNumericAddress("::"),
+                    InetAddresses.parseNumericAddress("ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff"));
+    static final IkeTrafficSelector INBOUND_V4_TS =
+            new IkeTrafficSelector(
+                    INBOUND_TS_START_PORT,
+                    INBOUND_TS_END_PORT,
+                    InetAddresses.parseNumericAddress("192.0.2.10"),
+                    InetAddresses.parseNumericAddress("192.0.2.20"));
+    static final IkeTrafficSelector OUTBOUND_V4_TS =
+            new IkeTrafficSelector(
+                    OUTBOUND_TS_START_PORT,
+                    OUTBOUND_TS_END_PORT,
+                    InetAddresses.parseNumericAddress("198.51.100.0"),
+                    InetAddresses.parseNumericAddress("198.51.100.255"));
+
+    static final IkeTrafficSelector INBOUND_V6_TS =
+            new IkeTrafficSelector(
+                    INBOUND_TS_START_PORT,
+                    INBOUND_TS_END_PORT,
+                    InetAddresses.parseNumericAddress("2001:db8::10"),
+                    InetAddresses.parseNumericAddress("2001:db8::128"));
+    static final IkeTrafficSelector OUTBOUND_V6_TS =
+            new IkeTrafficSelector(
+                    OUTBOUND_TS_START_PORT,
+                    OUTBOUND_TS_END_PORT,
+                    InetAddresses.parseNumericAddress("2001:db8:255::64"),
+                    InetAddresses.parseNumericAddress("2001:db8:255::255"));
+}