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Merge "Add CTS tests for getMultipathPreference"

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This commit is contained in:
Chalard Jean
2018-04-03 09:16:09 +00:00
committed by Gerrit Code Review
parent a48cb94938 8a0530bb9c
commit 8d66f2dc82
1 changed files with 160 additions and 0 deletions
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160
tests/cts/net/src/android/net/cts/ConnectivityManagerTest.java
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@@ -18,11 +18,16 @@ package android.net.cts;
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_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;
@@ -38,12 +43,17 @@ import android.net.NetworkInfo.State;
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;
@@ -51,6 +61,7 @@ import java.io.FileNotFoundException;
import java.io.InputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.lang.NumberFormatException;
import java.net.Socket;
import java.net.InetSocketAddress;
import java.util.HashMap;
@@ -58,6 +69,8 @@ import java.util.Scanner;
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;
public class ConnectivityManagerTest extends AndroidTestCase {
@@ -72,6 +85,9 @@ public class ConnectivityManagerTest extends AndroidTestCase {
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" +
@@ -101,6 +117,7 @@ public class ConnectivityManagerTest extends AndroidTestCase {
private static final int MIN_NUM_NETWORK_TYPES = 1;
private Context mContext;
private Instrumentation mInstrumentation;
private ConnectivityManager mCm;
private WifiManager mWifiManager;
private PackageManager mPackageManager;
@@ -113,6 +130,7 @@ public class ConnectivityManagerTest extends AndroidTestCase {
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();
@@ -835,4 +853,146 @@ public class ConnectivityManagerTest extends AndroidTestCase {
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);
}
}
}