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XdsClientTest.java
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XdsClientTest.java
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/*
* Copyright 2019 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.xds;
import static com.google.common.truth.Truth.assertThat;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.never;
import static org.mockito.Mockito.verify;
import io.grpc.xds.XdsClient.RefCountedXdsClientObjectPool;
import io.grpc.xds.XdsClient.XdsClientFactory;
import org.junit.Assert;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
/**
* Unit tests for {@link XdsClient}.
*/
@RunWith(JUnit4.class)
public class XdsClientTest {
@Test
public void refCountedXdsClientObjectPool_getObjectShouldMatchReturnObject() {
XdsClientFactory xdsClientFactory = new XdsClientFactory() {
@Override
XdsClient createXdsClient() {
return mock(XdsClient.class);
}
};
RefCountedXdsClientObjectPool xdsClientPool =
new RefCountedXdsClientObjectPool(xdsClientFactory);
// getObject once
XdsClient xdsClient = xdsClientPool.getObject();
assertThat(xdsClient).isNotNull();
// getObject twice
assertThat(xdsClientPool.getObject()).isSameInstanceAs(xdsClient);
// returnObject once
assertThat(xdsClientPool.returnObject(xdsClient)).isNull();
verify(xdsClient, never()).shutdown();
// returnObject twice
assertThat(xdsClientPool.returnObject(xdsClient)).isNull();
verify(xdsClient).shutdown();
assertThat(xdsClientPool.xdsClient).isNull();
// returnObject for the 3rd time
try {
xdsClientPool.returnObject(xdsClient);
Assert.fail();
} catch (IllegalStateException expected) {
}
}
@Test
public void refCountedXdsClientObjectPool_returnWrongObjectShouldThrow() {
XdsClientFactory xdsClientFactory = new XdsClientFactory() {
@Override
XdsClient createXdsClient() {
return mock(XdsClient.class);
}
};
RefCountedXdsClientObjectPool xdsClientPool =
new RefCountedXdsClientObjectPool(xdsClientFactory);
xdsClientPool.getObject();
try {
xdsClientPool.returnObject(mock(XdsClient.class));
Assert.fail();
} catch (IllegalStateException expected) {
}
}
@Test
public void refCountedXdsClientObjectPool_getObjectCreatesNewInstanceIfAlreadyShutdown() {
XdsClientFactory xdsClientFactory = new XdsClientFactory() {
@Override
XdsClient createXdsClient() {
return mock(XdsClient.class);
}
};
RefCountedXdsClientObjectPool xdsClientPool =
new RefCountedXdsClientObjectPool(xdsClientFactory);
XdsClient xdsClient1 = xdsClientPool.getObject();
verify(xdsClient1, never()).shutdown();
assertThat(xdsClientPool.returnObject(xdsClient1)).isNull();
verify(xdsClient1).shutdown();
XdsClient xdsClient2 = xdsClientPool.getObject();
assertThat(xdsClient2).isNotSameInstanceAs(xdsClient1);
}
}