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- /*
- * 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());
- }
- }
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