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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.
*/
package org.apache.synapse.commons.executors.queues;
import junit.framework.TestCase;
import org.apache.synapse.commons.executors.DummyTask;
import java.util.List;
import java.util.ArrayList;
import java.util.NoSuchElementException;
public class FixedQueueTest extends TestCase {
private FixedSizeQueue<DummyTask> queue;
private final int SIZE = 10;
private final int PRIORITY = 10;
@Override
protected void setUp() throws Exception {
super.setUp();
queue = new FixedSizeQueue<DummyTask>(PRIORITY, SIZE);
}
public void testOffer() {
queue.offer(new DummyTask(PRIORITY));
assertEquals(queue.size(), 1);
for (int i = 0; i < SIZE; i++) {
queue.offer(new DummyTask(SIZE));
}
assertEquals(queue.size(), SIZE);
queue.clear();
assertEquals(queue.size(), 0);
}
public void testPeek() {
DummyTask task = new DummyTask(PRIORITY);
queue.offer(task);
assertEquals(queue.peek(), task);
for (int i = 0; i < SIZE/2; i++) {
queue.offer(new DummyTask(SIZE));
}
queue.offer(task);
assertEquals(queue.peek(), task);
queue.clear();
assertTrue(null == queue.peek());
}
public void testAdd() {
DummyTask task = new DummyTask(PRIORITY);
queue.add(task);
assertEquals(queue.peek(), task);
for (int i = 0; i < SIZE/2; i++) {
queue.add(new DummyTask(SIZE));
}
queue.add(task);
assertEquals(queue.peek(), task);
boolean exceptionOccurred = false;
try {
for (int i = 0; i < SIZE; i++) {
queue.add(new DummyTask(SIZE));
}
} catch (IllegalStateException e) {
exceptionOccurred = true;
}
assertTrue(exceptionOccurred);
queue.clear();
}
public void testRemove() {
DummyTask task = new DummyTask(PRIORITY);
queue.offer(task);
assertEquals(queue.peek(), task);
assertEquals(queue.remove(), task);
assertEquals(queue.size(), 0);
for (int i = 0; i < SIZE; i++) {
queue.offer(new DummyTask(SIZE));
}
queue.remove();
assertEquals(queue.size(), SIZE - 1);
queue.clear();
}
public void testRemoveObject() {
DummyTask task = new DummyTask(PRIORITY);
queue.offer(task);
assertEquals(queue.peek(), task);
assertTrue(queue.remove(task));
assertEquals(queue.size(), 0);
List<DummyTask> tasks = new ArrayList<DummyTask>();
for (int i = 0; i < SIZE; i++) {
DummyTask t = new DummyTask(10);
tasks.add(t);
queue.offer(t);
}
assertEquals(queue.size(), SIZE);
queue.remove(tasks.get(6));
queue.remove(tasks.get(7));
queue.remove(tasks.get(4));
queue.remove(tasks.get(5));
assertEquals(queue.size(), SIZE - 4);
queue.offer(tasks.get(4));
queue.offer(tasks.get(5));
queue.offer(tasks.get(6));
queue.offer(tasks.get(7));
assertEquals(queue.size(), SIZE);
queue.clear();
}
public void testElement() {
DummyTask task = new DummyTask(PRIORITY);
queue.offer(task);
assertEquals(queue.element(), task);
for (int i = 0; i < SIZE/2; i++) {
queue.offer(new DummyTask(SIZE));
}
queue.offer(task);
assertEquals(queue.element(), task);
queue.clear();
boolean exceptionOccurred = false;
try {
queue.element();
} catch (NoSuchElementException e) {
exceptionOccurred = true;
}
assertTrue(exceptionOccurred);
}
}