/*
* Copyright (C) 2011-2013 Mojavemvc.org
*
* Licensed 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.mojavemvc.tests.freemarker;
import java.util.concurrent.CountDownLatch;
import junit.framework.Assert;
import org.junit.Test;
import org.mojavemvc.tests.AbstractWebTest;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.gargoylesoftware.htmlunit.WebClient;
import com.gargoylesoftware.htmlunit.html.DomNodeList;
import com.gargoylesoftware.htmlunit.html.HtmlElement;
import com.gargoylesoftware.htmlunit.html.HtmlPage;
/**
* @author Luis Antunes
*/
public class TestMultiClient extends AbstractWebTest {
private static final Logger logger = LoggerFactory.getLogger("org.mojavemvc.tests.freemarker");
@Test
public void manyDifferentConcurrentRequests() throws Exception {
error = false;
int numClients = 50;
CountDownLatch startLatch = new CountDownLatch(1);
CountDownLatch stopLatch = new CountDownLatch(numClients);
for (int i = 0; i < numClients; i++) {
new SynchedThread(new Client(i), startLatch, stopLatch).start();
}
startLatch.countDown(); /* let all threads proceed */
stopLatch.await(); /* wait for all to finish */
if (error) {
Assert.fail();
}
}
/*-----------------Helper methods and classes-------------------------------*/
private static boolean error = false;
private class Client implements Runnable {
private final int clientNum;
private final WebClient client;
public Client(int clientNum) {
this.clientNum = clientNum;
this.client = new WebClient();
}
public void run() {
try {
HtmlPage page = (HtmlPage) client.getPage(
"http://localhost:8989/mvc/serv/ftl/basic/client" + clientNum);
DomNodeList<HtmlElement> elements = page.getElementsByTagName("h1");
checkEquals(1, elements.size());
HtmlElement h1 = elements.get(0);
checkEquals("client" + clientNum, h1.getTextContent());
} catch (Exception e) {
logger.error("error", e);
error = true;
}
}
}
private static class SynchedThread extends Thread {
private CountDownLatch startLatch;
private CountDownLatch stopLatch;
public SynchedThread(Runnable runnable, CountDownLatch startLatch, CountDownLatch stopLatch) {
super(runnable);
this.startLatch = startLatch;
this.stopLatch = stopLatch;
}
@Override
public void run() {
try {
startLatch.await(); /* wait for other threads */
super.run();
stopLatch.countDown(); /* signal that this thread is finished */
} catch (Exception e) {
throw new RuntimeException(e);
}
}
}
private static void checkEquals(String expected, String actual) {
if (!expected.equals(actual)) {
throw new RuntimeException("[" + expected + "]" + " not equal to [" + actual + "]");
}
}
private static void checkEquals(int expected, int actual) {
if (expected != actual) {
throw new RuntimeException("[" + expected + "]" + " not equal to [" + actual + "]");
}
}
}