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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.utils;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;
import static org.mockito.Mockito.never;
import java.util.concurrent.Callable;
import java.util.concurrent.CancellationException;
import junit.framework.TestCase;
public class ExecutorWithTimeLimitTest extends TestCase
{
private static final int TIMEOUT = 500;
private static final Object RESULT = new Object();
private ExecutorWithLimits _limiter;
@SuppressWarnings("unchecked")
private Callable<Object> _callback = mock(Callable.class);
@Override
protected void setUp() throws Exception
{
super.setUp();
_limiter = new ExecutorWithTimeLimit(System.currentTimeMillis(), TIMEOUT);
}
@Override
protected void tearDown() throws Exception
{
super.tearDown();
if (_limiter != null)
{
_limiter.shutdown();
}
}
public void testCallableCompletesNormally() throws Exception
{
when(_callback.call()).thenReturn(RESULT);
final Object actualResult = _limiter.execute(_callback);
verify(_callback).call();
assertEquals(RESULT, actualResult);
}
public void testCallableThrowsException() throws Exception
{
when(_callback.call()).thenThrow(new Exception("mocked exception"));
try
{
_limiter.execute(_callback);
fail("Exception not thrown");
}
catch (CancellationException ce)
{
fail("Wrong exception thrown");
}
catch (Exception e)
{
// PASS
}
verify(_callback).call();
}
public void testCallableNotRunDueToInsufficentTimeRemaining() throws Exception
{
long now = System.currentTimeMillis();
ExecutorWithLimits shortTimeLimiter = new ExecutorWithTimeLimit(now - 100, 100);
try
{
shortTimeLimiter.execute(_callback);
fail("Exception not thrown");
}
catch (CancellationException ca)
{
// PASS
}
finally
{
shortTimeLimiter.shutdown();
}
verify(_callback, never()).call();
}
public void testExecutionInterruptedByTimeout() throws Exception
{
Callable<Void> oversleepingCallback = new Callable<Void>()
{
@Override
public Void call() throws Exception
{
Thread.sleep(TIMEOUT * 2);
return null;
}
};
try
{
_limiter.execute(oversleepingCallback);
fail("Exception not thrown");
}
catch (CancellationException ca)
{
// PASS
}
}
}
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