// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
package org.chromium.content.browser;
import android.content.ComponentName;
import android.os.Build;
import androidx.test.filters.SmallTest;
import org.junit.Assert;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.robolectric.RuntimeEnvironment;
import org.robolectric.annotation.Config;
import org.chromium.base.ChildBindingState;
import org.chromium.base.metrics.RecordHistogram;
import org.chromium.base.process_launcher.ChildProcessConnection;
import org.chromium.base.process_launcher.TestChildProcessConnection;
import org.chromium.base.test.BaseRobolectricTestRunner;
import java.util.LinkedList;
/** Unit test for {@link ChildProcessConnectionMetrics}. */
@RunWith(BaseRobolectricTestRunner.class)
@Config(manifest = Config.NONE, sdk = Build.VERSION_CODES.Q)
public class ChildProcessConnectionMetricsUnitTest {
private LinkedList<ChildProcessConnection> mRanking;
private BindingManager mBindingManager;
private ChildProcessConnectionMetrics mConnectionMetrics;
@Before
public void setUp() {
LauncherThread.setCurrentThreadAsLauncherThread();
mRanking = new LinkedList<ChildProcessConnection>();
mBindingManager =
new BindingManager(
RuntimeEnvironment.application, BindingManager.NO_MAX_SIZE, mRanking);
mConnectionMetrics = new ChildProcessConnectionMetrics();
mConnectionMetrics.setBindingManager(mBindingManager);
}
@Test
@SmallTest
public void testEmitMetricsNoConnections() {
setupBindingType(false);
ChildProcessConnection connection = createMockConnection(ChildBindingState.STRONG);
mConnectionMetrics.addConnection(connection);
removeConnection(connection);
mConnectionMetrics.emitMetrics();
Assert.assertEquals(
1,
RecordHistogram.getHistogramValueCountForTesting(
"Android.ChildProcessBinding.TotalConnections", 0));
Assert.assertEquals(
1,
RecordHistogram.getHistogramValueCountForTesting(
"Android.ChildProcessBinding.StrongConnections", 0));
Assert.assertEquals(
1,
RecordHistogram.getHistogramValueCountForTesting(
"Android.ChildProcessBinding.VisibleConnections", 0));
Assert.assertEquals(
1,
RecordHistogram.getHistogramValueCountForTesting(
"Android.ChildProcessBinding.NotPerceptibleConnections", 0));
Assert.assertEquals(
1,
RecordHistogram.getHistogramValueCountForTesting(
"Android.ChildProcessBinding.WaivedConnections", 0));
Assert.assertEquals(
1,
RecordHistogram.getHistogramValueCountForTesting(
"Android.ChildProcessBinding.ContentVisibleConnections", 0));
Assert.assertEquals(
1,
RecordHistogram.getHistogramValueCountForTesting(
"Android.ChildProcessBinding.ContentWaivedConnections", 0));
Assert.assertEquals(
1,
RecordHistogram.getHistogramValueCountForTesting(
"Android.ChildProcessBinding.WaivableConnections", 0));
}
@Test
@SmallTest
public void testEmitMetrics_BindingManagerUsesNotPerceptible() {
setupBindingType(true);
mConnectionMetrics.addConnection(createMockConnection(ChildBindingState.STRONG));
mConnectionMetrics.addConnection(createMockConnection(ChildBindingState.VISIBLE));
mConnectionMetrics.addConnection(createMockConnection(ChildBindingState.WAIVED));
mConnectionMetrics.addConnection(createMockConnection(ChildBindingState.WAIVED));
mConnectionMetrics.addConnection(createMockConnection(ChildBindingState.WAIVED));
ChildProcessConnection lowestRankingConnection =
createMockConnection(ChildBindingState.WAIVED);
mConnectionMetrics.addConnection(lowestRankingConnection);
setLowestRanking(lowestRankingConnection);
mConnectionMetrics.emitMetrics();
Assert.assertEquals(
1,
RecordHistogram.getHistogramValueCountForTesting(
"Android.ChildProcessBinding.TotalConnections", 6));
Assert.assertEquals(
1,
RecordHistogram.getHistogramValueCountForTesting(
"Android.ChildProcessBinding.StrongConnections", 1));
Assert.assertEquals(
1,
RecordHistogram.getHistogramValueCountForTesting(
"Android.ChildProcessBinding.VisibleConnections", 1));
Assert.assertEquals(
1,
RecordHistogram.getHistogramValueCountForTesting(
"Android.ChildProcessBinding.NotPerceptibleConnections", 3));
Assert.assertEquals(
1,
RecordHistogram.getHistogramValueCountForTesting(
"Android.ChildProcessBinding.WaivedConnections", 1));
Assert.assertEquals(
1,
RecordHistogram.getHistogramValueCountForTesting(
"Android.ChildProcessBinding.ContentVisibleConnections", 1));
Assert.assertEquals(
1,
RecordHistogram.getHistogramValueCountForTesting(
"Android.ChildProcessBinding.ContentWaivedConnections", 4));
Assert.assertEquals(
1,
RecordHistogram.getHistogramValueCountForTesting(
"Android.ChildProcessBinding.WaivableConnections", 3));
}
@Test
@SmallTest
public void testEmitMetrics_BindingManagerUsesVisible() {
setupBindingType(false);
mConnectionMetrics.addConnection(createMockConnection(ChildBindingState.STRONG));
mConnectionMetrics.addConnection(createMockConnection(ChildBindingState.VISIBLE));
ChildProcessConnection lowestRankingConnection =
createMockConnection(ChildBindingState.WAIVED);
mConnectionMetrics.addConnection(lowestRankingConnection);
mConnectionMetrics.addConnection(createMockConnection(ChildBindingState.WAIVED));
mConnectionMetrics.addConnection(createMockConnection(ChildBindingState.WAIVED));
mConnectionMetrics.addConnection(createMockConnection(ChildBindingState.WAIVED));
setLowestRanking(lowestRankingConnection);
mConnectionMetrics.emitMetrics();
Assert.assertEquals(
1,
RecordHistogram.getHistogramValueCountForTesting(
"Android.ChildProcessBinding.TotalConnections", 6));
Assert.assertEquals(
1,
RecordHistogram.getHistogramValueCountForTesting(
"Android.ChildProcessBinding.StrongConnections", 1));
Assert.assertEquals(
1,
RecordHistogram.getHistogramValueCountForTesting(
"Android.ChildProcessBinding.VisibleConnections", 4));
Assert.assertEquals(
1,
RecordHistogram.getHistogramValueCountForTesting(
"Android.ChildProcessBinding.NotPerceptibleConnections", 0));
Assert.assertEquals(
1,
RecordHistogram.getHistogramValueCountForTesting(
"Android.ChildProcessBinding.WaivedConnections", 1));
Assert.assertEquals(
1,
RecordHistogram.getHistogramValueCountForTesting(
"Android.ChildProcessBinding.ContentVisibleConnections", 1));
Assert.assertEquals(
1,
RecordHistogram.getHistogramValueCountForTesting(
"Android.ChildProcessBinding.ContentWaivedConnections", 4));
Assert.assertEquals(
1,
RecordHistogram.getHistogramValueCountForTesting(
"Android.ChildProcessBinding.WaivableConnections", 3));
}
@Test
@SmallTest
public void testEmitMetricsWithUpdate() {
setupBindingType(false);
ChildProcessConnection lowestRankingConnection =
createMockConnection(ChildBindingState.VISIBLE);
mConnectionMetrics.addConnection(lowestRankingConnection);
ChildProcessConnection highestRankingConnection =
createMockConnection(ChildBindingState.VISIBLE);
mConnectionMetrics.addConnection(highestRankingConnection);
setLowestRanking(lowestRankingConnection);
mConnectionMetrics.emitMetrics();
Assert.assertEquals(
1,
RecordHistogram.getHistogramValueCountForTesting(
"Android.ChildProcessBinding.TotalConnections", 2));
Assert.assertEquals(
1,
RecordHistogram.getHistogramValueCountForTesting(
"Android.ChildProcessBinding.StrongConnections", 0));
Assert.assertEquals(
1,
RecordHistogram.getHistogramValueCountForTesting(
"Android.ChildProcessBinding.VisibleConnections", 2));
Assert.assertEquals(
1,
RecordHistogram.getHistogramValueCountForTesting(
"Android.ChildProcessBinding.NotPerceptibleConnections", 0));
Assert.assertEquals(
1,
RecordHistogram.getHistogramValueCountForTesting(
"Android.ChildProcessBinding.WaivedConnections", 0));
Assert.assertEquals(
1,
RecordHistogram.getHistogramValueCountForTesting(
"Android.ChildProcessBinding.ContentVisibleConnections", 2));
Assert.assertEquals(
1,
RecordHistogram.getHistogramValueCountForTesting(
"Android.ChildProcessBinding.ContentWaivedConnections", 0));
Assert.assertEquals(
1,
RecordHistogram.getHistogramValueCountForTesting(
"Android.ChildProcessBinding.WaivableConnections", 0));
updateContentBinding(lowestRankingConnection, ChildBindingState.WAIVED);
updateContentBinding(highestRankingConnection, ChildBindingState.WAIVED);
mConnectionMetrics.emitMetrics();
Assert.assertEquals(
2,
RecordHistogram.getHistogramValueCountForTesting(
"Android.ChildProcessBinding.TotalConnections", 2));
Assert.assertEquals(
2,
RecordHistogram.getHistogramValueCountForTesting(
"Android.ChildProcessBinding.StrongConnections", 0));
Assert.assertEquals(
1,
RecordHistogram.getHistogramValueCountForTesting(
"Android.ChildProcessBinding.VisibleConnections", 1));
Assert.assertEquals(
2,
RecordHistogram.getHistogramValueCountForTesting(
"Android.ChildProcessBinding.NotPerceptibleConnections", 0));
Assert.assertEquals(
1,
RecordHistogram.getHistogramValueCountForTesting(
"Android.ChildProcessBinding.WaivedConnections", 1));
Assert.assertEquals(
1,
RecordHistogram.getHistogramValueCountForTesting(
"Android.ChildProcessBinding.ContentVisibleConnections", 0));
Assert.assertEquals(
1,
RecordHistogram.getHistogramValueCountForTesting(
"Android.ChildProcessBinding.ContentWaivedConnections", 2));
Assert.assertEquals(
1,
RecordHistogram.getHistogramValueCountForTesting(
"Android.ChildProcessBinding.WaivableConnections", 1));
}
/**
* Create a mock connection with the specified content binding state and a BindingManager
* binding.
*/
private ChildProcessConnection createMockConnection(
@ChildBindingState int contentBindingState) {
ChildProcessConnection connection =
new TestChildProcessConnection(
new ComponentName("pkg", "cls"),
/* bindToCallerCheck= */ false,
/* bindAsExternalService= */ false,
/* serviceBundle= */ null);
connection.start(/* useStrongBinding= */ false, /* serviceCallback= */ null);
if (contentBindingState == ChildBindingState.STRONG) {
connection.addStrongBinding();
connection.removeVisibleBinding();
} else if (contentBindingState == ChildBindingState.WAIVED) {
connection.removeVisibleBinding();
}
mBindingManager.addConnection(connection);
return connection;
}
/**
* Change the current binding state of a mock {@code connection} to {@code contentBindingState}.
*/
private void updateContentBinding(
ChildProcessConnection connection, @ChildBindingState int contentBindingState) {
final boolean needsStrongBinding = contentBindingState == ChildBindingState.STRONG;
final boolean hasContentStrongBinding = connection.isStrongBindingBound();
final boolean lowestRank = mRanking.size() == 1 && mRanking.get(0) == connection;
final boolean needsVisibleBinding = contentBindingState == ChildBindingState.VISIBLE;
final boolean hasContentVisibleBinding =
((lowestRank || BindingManager.useNotPerceptibleBinding())
&& connection.isVisibleBindingBound())
|| connection.getVisibleBindingCount() == 2;
if (needsStrongBinding && !hasContentStrongBinding) {
connection.addStrongBinding();
} else if (!needsStrongBinding && hasContentStrongBinding) {
connection.removeStrongBinding();
}
if (needsVisibleBinding && !hasContentVisibleBinding) {
connection.addVisibleBinding();
} else if (!needsVisibleBinding && hasContentVisibleBinding) {
connection.removeVisibleBinding();
}
}
/** Make the supplied connection the lowest ranking. */
private void setLowestRanking(ChildProcessConnection connection) {
if (mRanking.size() == 1) {
mBindingManager.removeConnection(mRanking.get(0));
mBindingManager.addConnection(mRanking.get(0));
}
mRanking.clear();
if (connection != null) {
mRanking.add(connection);
}
mBindingManager.rankingChanged();
}
private void removeConnection(ChildProcessConnection connection) {
mConnectionMetrics.removeConnection(connection);
mBindingManager.removeConnection(connection);
}
private void setupBindingType(boolean useNotPerceptibleBinding) {
BindingManager.setUseNotPerceptibleBindingForTesting(useNotPerceptibleBinding);
if (useNotPerceptibleBinding) {
Assert.assertTrue(BindingManager.useNotPerceptibleBinding());
return;
}
Assert.assertFalse(BindingManager.useNotPerceptibleBinding());
}
}
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