/*
* 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.
*/
package org.apache.commons.jxpath.ri;
import junit.framework.TestCase;
import org.apache.commons.jxpath.JXPathContext;
/**
* Test thread safety.
*
* @author Dmitri Plotnikov
* @version $Revision: 652845 $ $Date: 2008-05-02 12:46:46 -0500 (Fri, 02 May 2008) $
*/
public class StressTest extends TestCase {
private static final int THREAD_COUNT = 50;
private static final int THREAD_DURATION = 1000;
private static JXPathContext context;
private static int count;
private static Throwable exception;
public void testThreads() throws Throwable {
context = JXPathContext.newContext(null, new Double(100));
Thread[] threadArray = new Thread[THREAD_COUNT];
for (int i = 0; i < THREAD_COUNT; i++) {
threadArray[i] = new Thread(new StressRunnable());
}
for (int i = 0; i < threadArray.length; i++) {
threadArray[i].start();
}
for (int i = 0; i < threadArray.length; i++) {
try {
threadArray[i].join();
}
catch (InterruptedException e) {
assertTrue("Interrupted", false);
}
}
if (exception != null) {
throw exception;
}
assertEquals("Test count", THREAD_COUNT * THREAD_DURATION, count);
}
private final class StressRunnable implements Runnable {
public void run() {
for (int j = 0; j < THREAD_DURATION && exception == null; j++) {
try {
double random = 1 + Math.random();
double sum =
((Double) context.getValue("/ + " + random))
.doubleValue();
assertEquals(100 + random, sum, 0.0001);
synchronized (context) {
count++;
}
}
catch (Throwable t) {
exception = t;
}
}
}
}
}