| /* |
| * 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. |
| */ |
| |
| /* $Id$ */ |
| |
| package org.apache.fop.util; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.Vector; |
| import java.util.concurrent.ExecutorService; |
| import java.util.concurrent.Executors; |
| import java.util.concurrent.Future; |
| import java.util.concurrent.atomic.AtomicBoolean; |
| |
| import org.junit.Test; |
| |
| import static org.junit.Assert.assertFalse; |
| import static org.junit.Assert.assertNull; |
| |
| public class CompareUtilTestCase { |
| |
| @Test |
| public void testEqual() { |
| int numberOfParallelThreads = Runtime.getRuntime().availableProcessors(); |
| long numberOfEqualOperations = 100; |
| double probabilityOf12 = 0.5; |
| |
| ExecutorService executor = Executors.newFixedThreadPool(numberOfParallelThreads); |
| |
| final Vector object1 = new Vector(); |
| object1.add(new Object()); |
| object1.add(new Object()); |
| object1.add(new Object()); |
| object1.add(new Object()); |
| object1.add(new Object()); |
| final Vector object2 = new Vector(); |
| object2.add(new Object()); |
| object2.add(new Object()); |
| object2.add(new Object()); |
| object2.add(new Object()); |
| object2.add(new Object()); |
| object2.add(new Object()); |
| object2.add(new Object()); |
| object2.add(new Object()); |
| object2.add(new Object()); |
| object2.add(new Object()); |
| final boolean areEqual = object1.equals(object2); |
| final AtomicBoolean wrongResult = new AtomicBoolean(false); |
| |
| Runnable equal12 = new Runnable() { |
| public void run() { |
| if (areEqual != CompareUtil.equal(object1, object2)) { |
| wrongResult.set(true); |
| } |
| } |
| }; |
| Runnable equal21 = new Runnable() { |
| public void run() { |
| if (areEqual != CompareUtil.equal(object2, object1)) { |
| wrongResult.set(true); |
| } |
| } |
| }; |
| |
| List<Future<?>> futures = new ArrayList<Future<?>>(); |
| for (int i = 1; i <= numberOfEqualOperations; i++) { |
| Runnable randomTask = Math.random() < probabilityOf12 ? equal12 : equal21; |
| futures.add(executor.submit(randomTask)); |
| } |
| |
| Exception exception = null; |
| try { |
| for (Future<?> future : futures) { |
| future.get(); |
| } |
| } catch (Exception e) { |
| exception = e; |
| } |
| |
| assertNull(exception); |
| assertFalse(wrongResult.get()); |
| } |
| } |