/* Copyright 2009 Google Inc. All Rights Reserved.
*
* 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.waveprotocol.wave.client.common.util;
import com.google.gwt.junit.client.GWTTestCase;
import java.util.LinkedList;
import java.util.Queue;
import java.util.Random;
/**
* @author piotrkaleta@google.com (Piotr Kaleta)
*/
public class FastQueueGwtTest extends GWTTestCase {
public void testAddNull() throws Exception {
Queue<Integer> queue = new FastQueue<Integer>();
queue.add(null);
Integer value = queue.remove();
assertEquals(null, value);
}
public void testQueue() throws Exception {
final int TEST_ITERS = 500;
int nextInt = 0;
Random random = new Random(1);
Queue<Integer> queue = new FastQueue<Integer>();
Queue<Integer> reference = new LinkedList<Integer>();
for (int i = 0; i < TEST_ITERS; i++) {
if (random.nextBoolean()) {
// enqueue test
Integer value = random.nextDouble() < 0.9 ? nextInt++ : null;
queue.offer(value);
reference.offer(value);
assertEquals(reference.size(), queue.size());
} else {
// dequeue test
Integer actual = queue.poll();
Integer expected = reference.poll();
assertEquals(expected, actual);
assertEquals(reference.size(), queue.size());
}
}
// try the rest
while (!reference.isEmpty()) {
Integer actual = queue.poll();
Integer expected = reference.poll();
assertEquals(expected, actual);
assertEquals(reference.size(), queue.size());
}
}
@Override
public String getModuleName() {
return "org.waveprotocol.wave.client.common.util.tests";
}
}