/***********************************************************************************************************************
* Copyright (C) 2010-2013 by the Stratosphere project (http://stratosphere.eu)
*
* 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 eu.stratosphere.nephele.instance.cluster;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
import java.util.Iterator;
import java.util.Map;
import org.junit.Test;
import eu.stratosphere.nephele.instance.InstanceType;
import eu.stratosphere.nephele.instance.InstanceTypeFactory;
/**
* This class checks the {@link PendingRequestsMap} data structure.
*
*/
public class PendingRequestsMapTest {
/**
* The first instance type used in the tests.
*/
private static final InstanceType INSTANCE_TYPE1 = InstanceTypeFactory.construct("test1", 1, 1, 2, 2, 0);
/**
* The second instance type used in the tests.
*/
private static final InstanceType INSTANCE_TYPE2 = InstanceTypeFactory.construct("test2", 2, 2, 4, 4, 0);
/**
* Checks the correctness of the {@link PendingRequestsMap} data structure.
*/
@Test
public void testPendingRequestsMap() {
final PendingRequestsMap prm = new PendingRequestsMap();
assertFalse(prm.hasPendingRequests());
prm.addRequest(INSTANCE_TYPE1, 1);
prm.addRequest(INSTANCE_TYPE2, 2);
prm.addRequest(INSTANCE_TYPE2, 2);
assertTrue(prm.hasPendingRequests());
final Iterator<Map.Entry<InstanceType, Integer>> it = prm.iterator();
int iterationCounter = 0;
while (it.hasNext()) {
final Map.Entry<InstanceType, Integer> entry = it.next();
++iterationCounter;
if (entry.getKey().equals(INSTANCE_TYPE1)) {
assertEquals(1, entry.getValue().intValue());
}
if (entry.getKey().equals(INSTANCE_TYPE2)) {
assertEquals(4, entry.getValue().intValue());
}
}
assertEquals(2, iterationCounter);
prm.decreaseNumberOfPendingInstances(INSTANCE_TYPE1);
prm.decreaseNumberOfPendingInstances(INSTANCE_TYPE1);
prm.decreaseNumberOfPendingInstances(INSTANCE_TYPE1); // This call is actually superfluous
assertTrue(prm.hasPendingRequests());
prm.decreaseNumberOfPendingInstances(INSTANCE_TYPE2);
prm.decreaseNumberOfPendingInstances(INSTANCE_TYPE2);
prm.decreaseNumberOfPendingInstances(INSTANCE_TYPE2);
prm.decreaseNumberOfPendingInstances(INSTANCE_TYPE2);
assertFalse(prm.hasPendingRequests());
}
}