| /* |
| * Copyright (c) 2011, 2021 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 v. 2.0 which is available at |
| * http://www.eclipse.org/legal/epl-2.0, |
| * or the Eclipse Distribution License v. 1.0 which is available at |
| * http://www.eclipse.org/org/documents/edl-v10.php. |
| * |
| * SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause |
| */ |
| |
| // 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; |
| |
| @Override |
| public void setup(){ |
| map = new IdentityWeakHashMap<Integer, Integer>(100); |
| |
| for (int i=0;i<1000;i++){ |
| map.put(i, i); |
| } |
| } |
| |
| @Override |
| 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; |
| } |
| } |
| |
| @Override |
| public void verify(){ |
| if (exception != null){ |
| throw new TestErrorException("ConcurrentModificationException thrown in IdentityWeakHashMap because of System GC", exception); |
| } |
| |
| } |
| } |
| |