Add CTS tests for getMultipathPreference
Test: Test passing with 1 or more connected wifis
No wifi won't pass but it's already a requirement
Bug: 34630278
Change-Id: I43bf18943fbd00dc29417b18604e29f9111ec0b2
diff --git a/tests/cts/net/src/android/net/cts/ConnectivityManagerTest.java b/tests/cts/net/src/android/net/cts/ConnectivityManagerTest.java
index b2a152b..441bee3 100644
--- a/tests/cts/net/src/android/net/cts/ConnectivityManagerTest.java
+++ b/tests/cts/net/src/android/net/cts/ConnectivityManagerTest.java
@@ -20,12 +20,17 @@
import static android.content.pm.PackageManager.FEATURE_WIFI;
import static android.net.NetworkCapabilities.NET_CAPABILITY_IMS;
import static android.net.NetworkCapabilities.NET_CAPABILITY_INTERNET;
+import static android.net.NetworkCapabilities.NET_CAPABILITY_NOT_METERED;
import static android.net.NetworkCapabilities.TRANSPORT_CELLULAR;
import static android.net.NetworkCapabilities.TRANSPORT_WIFI;
+import static android.provider.Settings.Global.NETWORK_METERED_MULTIPATH_PREFERENCE;
+import static com.android.compatibility.common.util.SystemUtil.runShellCommand;
+import android.app.Instrumentation;
import android.app.PendingIntent;
import android.content.BroadcastReceiver;
import android.content.ComponentName;
+import android.content.ContentResolver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
@@ -42,12 +47,17 @@
import android.net.NetworkRequest;
import android.net.wifi.WifiManager;
import android.os.Looper;
+import android.os.SystemClock;
import android.os.SystemProperties;
+import android.provider.Settings;
+import android.support.test.InstrumentationRegistry;
import android.system.Os;
import android.system.OsConstants;
import android.test.AndroidTestCase;
+import android.text.TextUtils;
import android.util.Log;
+import com.android.internal.R;
import com.android.internal.telephony.PhoneConstants;
import java.io.File;
@@ -56,6 +66,7 @@
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStream;
+import java.lang.NumberFormatException;
import java.net.HttpURLConnection;
import java.net.Inet6Address;
import java.net.InetAddress;
@@ -70,6 +81,8 @@
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.LinkedBlockingQueue;
import java.util.concurrent.TimeUnit;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
import libcore.io.Streams;
public class ConnectivityManagerTest extends AndroidTestCase {
@@ -85,6 +98,9 @@
private static final String TEST_HOST = "connectivitycheck.gstatic.com";
private static final int SOCKET_TIMEOUT_MS = 2000;
private static final int SEND_BROADCAST_TIMEOUT = 30000;
+ private static final int NETWORK_CHANGE_METEREDNESS_TIMEOUT = 5000;
+ private static final int NUM_TRIES_MULTIPATH_PREF_CHECK = 20;
+ private static final long INTERVAL_MULTIPATH_PREF_CHECK_MS = 500;
private static final int HTTP_PORT = 80;
private static final String HTTP_REQUEST =
"GET /generate_204 HTTP/1.0\r\n" +
@@ -114,6 +130,7 @@
private static final int MIN_NUM_NETWORK_TYPES = 1;
private Context mContext;
+ private Instrumentation mInstrumentation;
private ConnectivityManager mCm;
private WifiManager mWifiManager;
private PackageManager mPackageManager;
@@ -128,6 +145,7 @@
super.setUp();
Looper.prepare();
mContext = getContext();
+ mInstrumentation = InstrumentationRegistry.getInstrumentation();
mCm = (ConnectivityManager) mContext.getSystemService(Context.CONNECTIVITY_SERVICE);
mWifiManager = (WifiManager) mContext.getSystemService(Context.WIFI_SERVICE);
mPackageManager = mContext.getPackageManager();
@@ -943,4 +961,146 @@
assertTrue(lowerBoundSec <= interval);
assertTrue(interval <= upperBoundSec);
}
+
+ // Returns "true", "false" or "none"
+ private String getWifiMeteredStatus(String ssid) throws Exception {
+ // Interestingly giving the SSID as an argument to list wifi-networks
+ // only works iff the network in question has the "false" policy.
+ // Also unfortunately runShellCommand does not pass the command to the interpreter
+ // so it's not possible to | grep the ssid.
+ final String command = "cmd netpolicy list wifi-networks";
+ final String policyString = runShellCommand(mInstrumentation, command);
+
+ final Matcher m = Pattern.compile("^" + ssid + ";(true|false|none)$",
+ Pattern.MULTILINE | Pattern.UNIX_LINES).matcher(policyString);
+ if (!m.find()) {
+ fail("Unexpected format from cmd netpolicy");
+ }
+ return m.group(1);
+ }
+
+ // metered should be "true", "false" or "none"
+ private void setWifiMeteredStatus(String ssid, String metered) throws Exception {
+ final String setCommand = "cmd netpolicy set metered-network " + ssid + " " + metered;
+ runShellCommand(mInstrumentation, setCommand);
+ assertEquals(getWifiMeteredStatus(ssid), metered);
+ }
+
+ private String unquoteSSID(String ssid) {
+ // SSID is returned surrounded by quotes if it can be decoded as UTF-8.
+ // Otherwise it's guaranteed not to start with a quote.
+ if (ssid.charAt(0) == '"') {
+ return ssid.substring(1, ssid.length() - 1);
+ } else {
+ return ssid;
+ }
+ }
+
+ private void waitForActiveNetworkMetered(boolean requestedMeteredness) throws Exception {
+ final CountDownLatch latch = new CountDownLatch(1);
+ final NetworkCallback networkCallback = new NetworkCallback() {
+ @Override
+ public void onCapabilitiesChanged(Network network, NetworkCapabilities nc) {
+ final boolean metered = !nc.hasCapability(NET_CAPABILITY_NOT_METERED);
+ if (metered == requestedMeteredness) {
+ latch.countDown();
+ }
+ }
+ };
+ // Registering a callback here guarantees onCapabilitiesChanged is called immediately
+ // with the current setting. Therefore, if the setting has already been changed,
+ // this method will return right away, and if not it will wait for the setting to change.
+ mCm.registerDefaultNetworkCallback(networkCallback);
+ if (!latch.await(NETWORK_CHANGE_METEREDNESS_TIMEOUT, TimeUnit.MILLISECONDS)) {
+ fail("Timed out waiting for active network metered status to change to "
+ + requestedMeteredness + " ; network = " + mCm.getActiveNetwork());
+ }
+ mCm.unregisterNetworkCallback(networkCallback);
+ }
+
+ private void assertMultipathPreferenceIsEventually(Network network, int oldValue,
+ int expectedValue) {
+ // Sanity check : if oldValue == expectedValue, there is no way to guarantee the test
+ // is not flaky.
+ assertNotSame(oldValue, expectedValue);
+
+ for (int i = 0; i < NUM_TRIES_MULTIPATH_PREF_CHECK; ++i) {
+ final int actualValue = mCm.getMultipathPreference(network);
+ if (actualValue == expectedValue) {
+ return;
+ }
+ if (actualValue != oldValue) {
+ fail("Multipath preference is neither previous (" + oldValue
+ + ") nor expected (" + expectedValue + ")");
+ }
+ SystemClock.sleep(INTERVAL_MULTIPATH_PREF_CHECK_MS);
+ }
+ fail("Timed out waiting for multipath preference to change. expected = "
+ + expectedValue + " ; actual = " + mCm.getMultipathPreference(network));
+ }
+
+ private int getCurrentMeteredMultipathPreference(ContentResolver resolver) {
+ final String rawMeteredPref = Settings.Global.getString(resolver,
+ NETWORK_METERED_MULTIPATH_PREFERENCE);
+ return TextUtils.isEmpty(rawMeteredPref)
+ ? mContext.getResources().getInteger(R.integer.config_networkMeteredMultipathPreference)
+ : Integer.parseInt(rawMeteredPref);
+ }
+
+ private int findNextPrefValue(ContentResolver resolver) {
+ // A bit of a nuclear hammer, but race conditions in CTS are bad. To be able to
+ // detect a correct setting value without race conditions, the next pref must
+ // be a valid value (range 0..3) that is different from the old setting of the
+ // metered preference and from the unmetered preference.
+ final int meteredPref = getCurrentMeteredMultipathPreference(resolver);
+ final int unmeteredPref = ConnectivityManager.MULTIPATH_PREFERENCE_UNMETERED;
+ if (0 != meteredPref && 0 != unmeteredPref) return 0;
+ if (1 != meteredPref && 1 != unmeteredPref) return 1;
+ return 2;
+ }
+
+ /**
+ * Verify that getMultipathPreference does return appropriate values
+ * for metered and unmetered networks.
+ */
+ public void testGetMultipathPreference() throws Exception {
+ final ContentResolver resolver = mContext.getContentResolver();
+ final Network network = ensureWifiConnected();
+ final String ssid = unquoteSSID(mWifiManager.getConnectionInfo().getSSID());
+ final String oldMeteredSetting = getWifiMeteredStatus(ssid);
+ final String oldMeteredMultipathPreference = Settings.Global.getString(
+ resolver, NETWORK_METERED_MULTIPATH_PREFERENCE);
+ try {
+ final int initialMeteredPreference = getCurrentMeteredMultipathPreference(resolver);
+ int newMeteredPreference = findNextPrefValue(resolver);
+ Settings.Global.putString(resolver, NETWORK_METERED_MULTIPATH_PREFERENCE,
+ Integer.toString(newMeteredPreference));
+ setWifiMeteredStatus(ssid, "true");
+ waitForActiveNetworkMetered(true);
+ assertEquals(mCm.getNetworkCapabilities(network).hasCapability(
+ NET_CAPABILITY_NOT_METERED), false);
+ assertMultipathPreferenceIsEventually(network, initialMeteredPreference,
+ newMeteredPreference);
+
+ final int oldMeteredPreference = newMeteredPreference;
+ newMeteredPreference = findNextPrefValue(resolver);
+ Settings.Global.putString(resolver, NETWORK_METERED_MULTIPATH_PREFERENCE,
+ Integer.toString(newMeteredPreference));
+ assertEquals(mCm.getNetworkCapabilities(network).hasCapability(
+ NET_CAPABILITY_NOT_METERED), false);
+ assertMultipathPreferenceIsEventually(network,
+ oldMeteredPreference, newMeteredPreference);
+
+ setWifiMeteredStatus(ssid, "false");
+ waitForActiveNetworkMetered(false);
+ assertEquals(mCm.getNetworkCapabilities(network).hasCapability(
+ NET_CAPABILITY_NOT_METERED), true);
+ assertMultipathPreferenceIsEventually(network, newMeteredPreference,
+ ConnectivityManager.MULTIPATH_PREFERENCE_UNMETERED);
+ } finally {
+ Settings.Global.putString(resolver, NETWORK_METERED_MULTIPATH_PREFERENCE,
+ oldMeteredMultipathPreference);
+ setWifiMeteredStatus(ssid, oldMeteredSetting);
+ }
+ }
}