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GrpcCleanupRuleTest.java
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GrpcCleanupRuleTest.java
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/*
* Copyright 2018 The gRPC Authors
*
* 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 io.grpc.testing;
import static com.google.common.truth.Truth.assertThat;
import static org.junit.Assert.assertSame;
import static org.junit.Assert.assertTrue;
import static org.mockito.AdditionalAnswers.delegatesTo;
import static org.mockito.ArgumentMatchers.any;
import static org.mockito.ArgumentMatchers.anyLong;
import static org.mockito.Mockito.doReturn;
import static org.mockito.Mockito.doThrow;
import static org.mockito.Mockito.inOrder;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.never;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.verifyNoMoreInteractions;
import io.grpc.ManagedChannel;
import io.grpc.Server;
import io.grpc.internal.FakeClock;
import io.grpc.testing.GrpcCleanupRule.Resource;
import java.util.concurrent.TimeUnit;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
import org.junit.runners.model.MultipleFailureException;
import org.junit.runners.model.Statement;
import org.mockito.InOrder;
/**
* Unit tests for {@link GrpcCleanupRule}.
*/
@RunWith(JUnit4.class)
public class GrpcCleanupRuleTest {
public static final FakeClock fakeClock = new FakeClock();
@SuppressWarnings("deprecation") // https://github.com/grpc/grpc-java/issues/7467
@Rule
public ExpectedException thrown = ExpectedException.none();
@Test
public void registerChannelReturnSameChannel() {
ManagedChannel channel = mock(ManagedChannel.class);
assertSame(channel, new GrpcCleanupRule().register(channel));
}
@Test
public void registerServerReturnSameServer() {
Server server = mock(Server.class);
assertSame(server, new GrpcCleanupRule().register(server));
}
@Test
public void registerNullChannelThrowsNpe() {
ManagedChannel channel = null;
GrpcCleanupRule grpcCleanup = new GrpcCleanupRule();
thrown.expect(NullPointerException.class);
thrown.expectMessage("channel");
grpcCleanup.register(channel);
}
@Test
public void registerNullServerThrowsNpe() {
Server server = null;
GrpcCleanupRule grpcCleanup = new GrpcCleanupRule();
thrown.expect(NullPointerException.class);
thrown.expectMessage("server");
grpcCleanup.register(server);
}
@Test
public void singleChannelCleanup() throws Throwable {
// setup
ManagedChannel channel = mock(ManagedChannel.class);
Statement statement = mock(Statement.class);
InOrder inOrder = inOrder(statement, channel);
GrpcCleanupRule grpcCleanup = new GrpcCleanupRule();
// run
grpcCleanup.register(channel);
boolean awaitTerminationFailed = false;
try {
// will throw because channel.awaitTermination(long, TimeUnit) will return false;
grpcCleanup.apply(statement, null /* description*/).evaluate();
} catch (AssertionError e) {
awaitTerminationFailed = true;
}
// verify
assertTrue(awaitTerminationFailed);
inOrder.verify(statement).evaluate();
inOrder.verify(channel).shutdown();
inOrder.verify(channel).awaitTermination(anyLong(), any(TimeUnit.class));
inOrder.verify(channel).shutdownNow();
}
@Test
public void singleServerCleanup() throws Throwable {
// setup
Server server = mock(Server.class);
Statement statement = mock(Statement.class);
InOrder inOrder = inOrder(statement, server);
GrpcCleanupRule grpcCleanup = new GrpcCleanupRule();
// run
grpcCleanup.register(server);
boolean awaitTerminationFailed = false;
try {
// will throw because channel.awaitTermination(long, TimeUnit) will return false;
grpcCleanup.apply(statement, null /* description*/).evaluate();
} catch (AssertionError e) {
awaitTerminationFailed = true;
}
// verify
assertTrue(awaitTerminationFailed);
inOrder.verify(statement).evaluate();
inOrder.verify(server).shutdown();
inOrder.verify(server).awaitTermination(anyLong(), any(TimeUnit.class));
inOrder.verify(server).shutdownNow();
}
@Test
public void multiResource_cleanupGracefully() throws Throwable {
// setup
Resource resource1 = mock(Resource.class);
Resource resource2 = mock(Resource.class);
Resource resource3 = mock(Resource.class);
doReturn(true).when(resource1).awaitReleased(anyLong(), any(TimeUnit.class));
doReturn(true).when(resource2).awaitReleased(anyLong(), any(TimeUnit.class));
doReturn(true).when(resource3).awaitReleased(anyLong(), any(TimeUnit.class));
Statement statement = mock(Statement.class);
InOrder inOrder = inOrder(statement, resource1, resource2, resource3);
GrpcCleanupRule grpcCleanup = new GrpcCleanupRule();
// run
grpcCleanup.register(resource1);
grpcCleanup.register(resource2);
grpcCleanup.register(resource3);
grpcCleanup.apply(statement, null /* description*/).evaluate();
// Verify.
inOrder.verify(statement).evaluate();
inOrder.verify(resource3).cleanUp();
inOrder.verify(resource2).cleanUp();
inOrder.verify(resource1).cleanUp();
inOrder.verify(resource3).awaitReleased(anyLong(), any(TimeUnit.class));
inOrder.verify(resource2).awaitReleased(anyLong(), any(TimeUnit.class));
inOrder.verify(resource1).awaitReleased(anyLong(), any(TimeUnit.class));
inOrder.verifyNoMoreInteractions();
verify(resource1, never()).forceCleanUp();
verify(resource2, never()).forceCleanUp();
verify(resource3, never()).forceCleanUp();
}
@Test
public void baseTestFails() throws Throwable {
// setup
Resource resource = mock(Resource.class);
Statement statement = mock(Statement.class);
doThrow(new Exception()).when(statement).evaluate();
GrpcCleanupRule grpcCleanup = new GrpcCleanupRule();
// run
grpcCleanup.register(resource);
boolean baseTestFailed = false;
try {
grpcCleanup.apply(statement, null /* description*/).evaluate();
} catch (Exception e) {
baseTestFailed = true;
}
// verify
assertTrue(baseTestFailed);
verify(resource).forceCleanUp();
verifyNoMoreInteractions(resource);
verify(resource, never()).cleanUp();
verify(resource, never()).awaitReleased(anyLong(), any(TimeUnit.class));
}
@Test
public void multiResource_awaitReleasedFails() throws Throwable {
// setup
Resource resource1 = mock(Resource.class);
Resource resource2 = mock(Resource.class);
Resource resource3 = mock(Resource.class);
doReturn(true).when(resource1).awaitReleased(anyLong(), any(TimeUnit.class));
doReturn(false).when(resource2).awaitReleased(anyLong(), any(TimeUnit.class));
doReturn(true).when(resource3).awaitReleased(anyLong(), any(TimeUnit.class));
Statement statement = mock(Statement.class);
InOrder inOrder = inOrder(statement, resource1, resource2, resource3);
GrpcCleanupRule grpcCleanup = new GrpcCleanupRule();
// run
grpcCleanup.register(resource1);
grpcCleanup.register(resource2);
grpcCleanup.register(resource3);
boolean cleanupFailed = false;
try {
grpcCleanup.apply(statement, null /* description*/).evaluate();
} catch (AssertionError e) {
cleanupFailed = true;
}
// verify
assertTrue(cleanupFailed);
inOrder.verify(statement).evaluate();
inOrder.verify(resource3).cleanUp();
inOrder.verify(resource2).cleanUp();
inOrder.verify(resource1).cleanUp();
inOrder.verify(resource3).awaitReleased(anyLong(), any(TimeUnit.class));
inOrder.verify(resource2).awaitReleased(anyLong(), any(TimeUnit.class));
inOrder.verify(resource1).awaitReleased(anyLong(), any(TimeUnit.class));
inOrder.verify(resource2).forceCleanUp();
inOrder.verifyNoMoreInteractions();
verify(resource3, never()).forceCleanUp();
verify(resource1, never()).forceCleanUp();
}
@Test
public void multiResource_awaitReleasedInterrupted() throws Throwable {
// setup
Resource resource1 = mock(Resource.class);
Resource resource2 = mock(Resource.class);
Resource resource3 = mock(Resource.class);
doReturn(true).when(resource1).awaitReleased(anyLong(), any(TimeUnit.class));
doThrow(new InterruptedException())
.when(resource2).awaitReleased(anyLong(), any(TimeUnit.class));
doReturn(true).when(resource3).awaitReleased(anyLong(), any(TimeUnit.class));
Statement statement = mock(Statement.class);
InOrder inOrder = inOrder(statement, resource1, resource2, resource3);
GrpcCleanupRule grpcCleanup = new GrpcCleanupRule();
// run
grpcCleanup.register(resource1);
grpcCleanup.register(resource2);
grpcCleanup.register(resource3);
boolean cleanupFailed = false;
try {
grpcCleanup.apply(statement, null /* description*/).evaluate();
} catch (Throwable e) {
cleanupFailed = true;
}
// verify
assertTrue(cleanupFailed);
assertTrue(Thread.interrupted());
inOrder.verify(statement).evaluate();
inOrder.verify(resource3).cleanUp();
inOrder.verify(resource2).cleanUp();
inOrder.verify(resource1).cleanUp();
inOrder.verify(resource3).awaitReleased(anyLong(), any(TimeUnit.class));
inOrder.verify(resource2).awaitReleased(anyLong(), any(TimeUnit.class));
inOrder.verify(resource2).forceCleanUp();
inOrder.verify(resource1).forceCleanUp();
inOrder.verifyNoMoreInteractions();
verify(resource3, never()).forceCleanUp();
verify(resource1, never()).awaitReleased(anyLong(), any(TimeUnit.class));
}
@Test
public void multiResource_timeoutCalculation() throws Throwable {
// setup
Resource resource1 = mock(FakeResource.class,
delegatesTo(new FakeResource(1 /* cleanupNanos */, 10 /* awaitReleaseNanos */)));
Resource resource2 = mock(FakeResource.class,
delegatesTo(new FakeResource(100 /* cleanupNanos */, 1000 /* awaitReleaseNanos */)));
Statement statement = mock(Statement.class);
InOrder inOrder = inOrder(statement, resource1, resource2);
GrpcCleanupRule grpcCleanup = new GrpcCleanupRule().setTicker(fakeClock.getTicker());
// run
grpcCleanup.register(resource1);
grpcCleanup.register(resource2);
grpcCleanup.apply(statement, null /* description*/).evaluate();
// verify
inOrder.verify(statement).evaluate();
inOrder.verify(resource2).cleanUp();
inOrder.verify(resource1).cleanUp();
inOrder.verify(resource2).awaitReleased(
TimeUnit.SECONDS.toNanos(10) - 100 - 1, TimeUnit.NANOSECONDS);
inOrder.verify(resource1).awaitReleased(
TimeUnit.SECONDS.toNanos(10) - 100 - 1 - 1000, TimeUnit.NANOSECONDS);
inOrder.verifyNoMoreInteractions();
verify(resource2, never()).forceCleanUp();
verify(resource1, never()).forceCleanUp();
}
@Test
public void multiResource_timeoutCalculation_customTimeout() throws Throwable {
// setup
Resource resource1 = mock(FakeResource.class,
delegatesTo(new FakeResource(1 /* cleanupNanos */, 10 /* awaitReleaseNanos */)));
Resource resource2 = mock(FakeResource.class,
delegatesTo(new FakeResource(100 /* cleanupNanos */, 1000 /* awaitReleaseNanos */)));
Statement statement = mock(Statement.class);
InOrder inOrder = inOrder(statement, resource1, resource2);
GrpcCleanupRule grpcCleanup = new GrpcCleanupRule()
.setTicker(fakeClock.getTicker()).setTimeout(3000, TimeUnit.NANOSECONDS);
// run
grpcCleanup.register(resource1);
grpcCleanup.register(resource2);
grpcCleanup.apply(statement, null /* description*/).evaluate();
// verify
inOrder.verify(statement).evaluate();
inOrder.verify(resource2).cleanUp();
inOrder.verify(resource1).cleanUp();
inOrder.verify(resource2).awaitReleased(3000 - 100 - 1, TimeUnit.NANOSECONDS);
inOrder.verify(resource1).awaitReleased(3000 - 100 - 1 - 1000, TimeUnit.NANOSECONDS);
inOrder.verifyNoMoreInteractions();
verify(resource2, never()).forceCleanUp();
verify(resource1, never()).forceCleanUp();
}
@Test
public void baseTestFailsThenCleanupFails() throws Throwable {
// setup
Exception baseTestFailure = new Exception("base test failure");
Exception cleanupFailure = new RuntimeException("force cleanup failed");
Statement statement = mock(Statement.class);
doThrow(baseTestFailure).when(statement).evaluate();
Resource resource1 = mock(Resource.class);
Resource resource2 = mock(Resource.class);
Resource resource3 = mock(Resource.class);
doThrow(cleanupFailure).when(resource2).forceCleanUp();
InOrder inOrder = inOrder(statement, resource1, resource2, resource3);
GrpcCleanupRule grpcCleanup = new GrpcCleanupRule();
// run
grpcCleanup.register(resource1);
grpcCleanup.register(resource2);
grpcCleanup.register(resource3);
Throwable failure = null;
try {
grpcCleanup.apply(statement, null /* description*/).evaluate();
} catch (Throwable e) {
failure = e;
}
// verify
if (failure instanceof MultipleFailureException) {
// JUnit 4.13+
assertThat(((MultipleFailureException) failure).getFailures())
.containsExactly(baseTestFailure, cleanupFailure);
} else {
// JUnit 4.12. Suffers from https://github.com/junit-team/junit4/issues/1334
assertThat(failure).isSameInstanceAs(cleanupFailure);
}
inOrder.verify(statement).evaluate();
inOrder.verify(resource3).forceCleanUp();
inOrder.verify(resource2).forceCleanUp();
inOrder.verifyNoMoreInteractions();
verify(resource1, never()).cleanUp();
verify(resource2, never()).cleanUp();
verify(resource3, never()).cleanUp();
verify(resource1, never()).forceCleanUp();
}
public static class FakeResource implements Resource {
private final long cleanupNanos;
private final long awaitReleaseNanos;
private FakeResource(long cleanupNanos, long awaitReleaseNanos) {
this.cleanupNanos = cleanupNanos;
this.awaitReleaseNanos = awaitReleaseNanos;
}
@Override
public void cleanUp() {
fakeClock.forwardTime(cleanupNanos, TimeUnit.NANOSECONDS);
}
@Override
public void forceCleanUp() {
}
@Override
public boolean awaitReleased(long duration, TimeUnit timeUnit) {
fakeClock.forwardTime(awaitReleaseNanos, TimeUnit.NANOSECONDS);
return true;
}
}
}