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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 org.apache.qpid.disttest.client;
import static org.mockito.Matchers.argThat;
import static org.mockito.Mockito.doThrow;
import static org.mockito.Mockito.inOrder;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.when;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.Executor;
import java.util.concurrent.TimeUnit;
import org.apache.qpid.disttest.DistributedTestException;
import org.apache.qpid.disttest.message.ParticipantResult;
import org.apache.qpid.test.utils.QpidTestCase;
import org.mockito.ArgumentMatcher;
import org.mockito.InOrder;
public class ParticipantExecutorTest extends QpidTestCase
{
private static final ResultHasError HAS_ERROR = new ResultHasError();
private static final String CLIENT_NAME = "CLIENT_NAME";
private static final String PARTICIPANT_NAME = "PARTICIPANT_NAME";
private ParticipantExecutor _participantExecutor = null;
private Client _client = null;
private Participant _participant = null;
private ParticipantResult _mockResult;
@Override
protected void setUp() throws Exception
{
super.setUp();
_client = mock(Client.class);
when(_client.getClientName()).thenReturn(CLIENT_NAME);
_participant = mock(Participant.class);
_participantExecutor = new ParticipantExecutor(_participant);
_participantExecutor.setExecutor(new SynchronousExecutor());
_mockResult = mock(ParticipantResult.class);
}
public void testStart() throws Exception
{
when(_participant.doIt(CLIENT_NAME)).thenReturn(_mockResult);
_participantExecutor.start(_client);
InOrder inOrder = inOrder(_participant, _client);
inOrder.verify(_participant).doIt(CLIENT_NAME);
inOrder.verify(_participant).releaseResources();
inOrder.verify(_client).sendResults(_mockResult);
}
public void testParticipantThrowsException() throws Exception
{
when(_participant.doIt(CLIENT_NAME)).thenThrow(DistributedTestException.class);
_participantExecutor.start(_client);
InOrder inOrder = inOrder(_participant, _client);
inOrder.verify(_participant).doIt(CLIENT_NAME);
inOrder.verify(_participant).releaseResources();
inOrder.verify(_client).sendResults(argThat(HAS_ERROR));
}
public void testReleaseResourcesThrowsException() throws Exception
{
when(_participant.doIt(CLIENT_NAME)).thenReturn(_mockResult);
doThrow(DistributedTestException.class).when(_participant).releaseResources();
_participantExecutor.start(_client);
InOrder inOrder = inOrder(_participant, _client);
inOrder.verify(_participant).doIt(CLIENT_NAME);
inOrder.verify(_participant).releaseResources();
// check that sendResults is called even though releaseResources threw an exception
inOrder.verify(_client).sendResults(_mockResult);
}
public void testThreadNameAndDaemonness() throws Exception
{
ThreadPropertyReportingParticipant participant = new ThreadPropertyReportingParticipant(PARTICIPANT_NAME);
_participantExecutor = new ParticipantExecutor(participant);
_participantExecutor.start(_client);
participant.awaitExecution();
assertTrue("Participant should be run in a thread named after it", participant.threadWasCalled().endsWith(PARTICIPANT_NAME));
assertTrue("Executor should use daemon threads to avoid them preventing JVM termination", participant.wasDaemon());
}
private static final class ThreadPropertyReportingParticipant implements Participant
{
private final String _participantName;
private final CountDownLatch _participantExecuted = new CountDownLatch(1);
private String _threadName;
private boolean _daemon;
public ThreadPropertyReportingParticipant(String participantName)
{
_participantName = participantName;
}
public String threadWasCalled()
{
return _threadName;
}
public boolean wasDaemon()
{
return _daemon;
}
@Override
public void releaseResources()
{
}
@Override
public String getName()
{
return _participantName;
}
@Override
public ParticipantResult doIt(String registeredClientName) throws Exception
{
Thread currentThread = Thread.currentThread();
_threadName = currentThread.getName();
_daemon = currentThread.isDaemon();
_participantExecuted.countDown();
return null; // unused
}
public void awaitExecution()
{
boolean success = false;
try
{
success = _participantExecuted.await(5, TimeUnit.SECONDS);
}
catch (InterruptedException e)
{
Thread.currentThread().interrupt();
}
assertTrue("Participant not executed", success);
}
}
/** avoids our unit test needing to use multiple threads */
private final class SynchronousExecutor implements Executor
{
@Override
public void execute(Runnable command)
{
command.run();
}
}
private static class ResultHasError extends ArgumentMatcher<ParticipantResult>
{
@Override
public boolean matches(Object argument)
{
ParticipantResult result = (ParticipantResult) argument;
return result.hasError();
}
}
}
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