1561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes/* 2561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes * Licensed to the Apache Software Foundation (ASF) under one or more 3561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes * contributor license agreements. See the NOTICE file distributed with 4561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes * this work for additional information regarding copyright ownership. 5561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes * The ASF licenses this file to You under the Apache License, Version 2.0 6561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes * (the "License"); you may not use this file except in compliance with 7561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes * the License. You may obtain a copy of the License at 8561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes * 9561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes * http://www.apache.org/licenses/LICENSE-2.0 10561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes * 11561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes * Unless required by applicable law or agreed to in writing, software 12561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes * distributed under the License is distributed on an "AS IS" BASIS, 13561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes * See the License for the specific language governing permissions and 15561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes * limitations under the License. 16561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes */ 17561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes 18561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughespackage org.apache.harmony.luni.tests.java.util; 19561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes 20561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughesimport java.util.Collection; 21561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughesimport java.util.ConcurrentModificationException; 22561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughesimport java.util.Iterator; 23561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughesimport java.util.LinkedList; 24561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes 25561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughespublic class ConcurrentModificationExceptionTest extends 26561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes junit.framework.TestCase { 27561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes 28561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes static public class CollectionModifier implements Runnable { 29561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes Collection col; 30561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes 31561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes boolean keepGoing = true; 32561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes 33561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes public CollectionModifier(Collection c) { 34561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes col = c; 35561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes } 36561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes 37561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes public void stopNow() { 38561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes keepGoing = false; 39561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes } 40561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes 41561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes public void run() { 42561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes Object someItem = new Integer(-1); 43561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes while (keepGoing) { 44561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes col.add(someItem); 45561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes col.remove(someItem); 46561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes } 47561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes } 48561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes } 49561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes 50561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes /** 51561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes * @tests java.util.ConcurrentModificationException#ConcurrentModificationException() 52561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes */ 53561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes public void test_Constructor() { 54561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes // Test for method java.util.ConcurrentModificationException() 55561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes Collection myCollection = new LinkedList(); 56561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes Iterator myIterator = myCollection.iterator(); 57561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes for (int counter = 0; counter < 50; counter++) 58561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes myCollection.add(new Integer(counter)); 59561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes CollectionModifier cm = new CollectionModifier(myCollection); 60561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes Thread collectionSlapper = new Thread(cm); 61561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes try { 62561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes collectionSlapper.start(); 63561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes while (myIterator.hasNext()) 64561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes myIterator.next(); 65561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes } catch (ConcurrentModificationException e) { 66561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes cm.stopNow(); 67561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes return; 68561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes } 69561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes cm.stopNow(); 70561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes // The exception should have been thrown--if the code flow makes it here 71561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes // the test has failed 72561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes fail("Failed to throw expected ConcurrentModificationException"); 73561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes } 74561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes 75561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes /** 76561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes * @tests java.util.ConcurrentModificationException#ConcurrentModificationException(java.lang.String) 77561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes */ 78561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes public void test_ConstructorLjava_lang_String() { 79561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes // Test for method 80561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes // java.util.ConcurrentModificationException(java.lang.String) 81561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes String errorMessage = "This is an error message"; 82561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes try { 83561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes // This is here to stop "unreachable code" unresolved problem 84561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes if (true) 85561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes throw new ConcurrentModificationException(errorMessage); 86561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes } catch (ConcurrentModificationException e) { 87561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes assertTrue("Exception thrown without error message", e.getMessage() 88561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes .equals(errorMessage)); 89561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes return; 90561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes } 91561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes fail("Failed to throw expected ConcurrentModificationException"); 92561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes } 93561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes 94561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes /** 95561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes * Sets up the fixture, for example, open a network connection. This method 96561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes * is called before a test is executed. 97561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes */ 98561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes protected void setUp() { 99561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes } 100561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes 101561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes /** 102561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes * Tears down the fixture, for example, close a network connection. This 103561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes * method is called after a test is executed. 104561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes */ 105561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes protected void tearDown() { 106561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes } 107561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes} 108