/******************************************************************************* | |
* Copyright (c) 2011, 2013 Oracle and/or its affiliates. All rights reserved. | |
* This program and the accompanying materials are made available under the | |
* terms of the Eclipse Public License v1.0 and Eclipse Distribution License v. 1.0 | |
* which accompanies this distribution. | |
* The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html | |
* and the Eclipse Distribution License is available at | |
* http://www.eclipse.org/org/documents/edl-v10.php. | |
* | |
* Contributors: | |
* Oracle - added with fix for bug 300236 | |
******************************************************************************/ | |
package org.eclipse.persistence.testing.tests.identitymaps; | |
import java.util.ConcurrentModificationException; | |
import java.util.Iterator; | |
import org.eclipse.persistence.internal.helper.IdentityWeakHashMap; | |
import org.eclipse.persistence.testing.framework.AutoVerifyTestCase; | |
import org.eclipse.persistence.testing.framework.TestErrorException; | |
/** | |
* Test that gc does not cause a ConcurrentModificationException when using IdentityWeakHashMap | |
* @author tware | |
* | |
*/ | |
public class IdentityWeakHashMapConcurrentModTest extends AutoVerifyTestCase{ | |
protected IdentityWeakHashMap<Integer, Integer> map = null; | |
protected ConcurrentModificationException exception = null; | |
public void setup(){ | |
map = new IdentityWeakHashMap<Integer, Integer>(100); | |
for (int i=0;i<1000;i++){ | |
map.put(i, i); | |
} | |
} | |
public void test(){ | |
try{ | |
Iterator i = map.keySet().iterator(); | |
int count=0; | |
while (i.hasNext()){ | |
count ++; | |
i.next(); | |
map.get(10); | |
System.gc(); | |
} | |
} catch (ConcurrentModificationException e){ | |
exception = e; | |
} | |
} | |
public void verify(){ | |
if (exception != null){ | |
throw new TestErrorException("ConcurrentModificationException thrown in IdentityWeakHashMap because of System GC", exception); | |
} | |
} | |
} | |