| /******************************************************************************* |
| * Copyright (c) 2009, 2010 Oracle. All rights reserved. |
| * This program and the accompanying materials are made available under the |
| * terms of the Eclipse Public License v1.0, which accompanies this distribution |
| * and is available at http://www.eclipse.org/legal/epl-v10.html. |
| * |
| * Contributors: |
| * Oracle - initial API and implementation |
| ******************************************************************************/ |
| package org.eclipse.jpt.common.utility.tests.internal; |
| |
| import java.util.NoSuchElementException; |
| |
| import org.eclipse.jpt.common.utility.internal.Queue; |
| import org.eclipse.jpt.common.utility.internal.SimpleQueue; |
| |
| @SuppressWarnings("nls") |
| public class SimpleQueueTests |
| extends MultiThreadedTestCase |
| { |
| |
| public SimpleQueueTests(String name) { |
| super(name); |
| } |
| |
| Queue<String> buildQueue() { |
| return new SimpleQueue<String>(); |
| } |
| |
| public void testIsEmpty() { |
| Queue<String> queue = this.buildQueue(); |
| assertTrue(queue.isEmpty()); |
| queue.enqueue("first"); |
| assertFalse(queue.isEmpty()); |
| queue.enqueue("second"); |
| assertFalse(queue.isEmpty()); |
| queue.dequeue(); |
| assertFalse(queue.isEmpty()); |
| queue.dequeue(); |
| assertTrue(queue.isEmpty()); |
| } |
| |
| public void testEnqueueAndDequeue() { |
| Queue<String> queue = this.buildQueue(); |
| String first = "first"; |
| String second = "second"; |
| |
| queue.enqueue(first); |
| queue.enqueue(second); |
| assertEquals(first, queue.dequeue()); |
| assertEquals(second, queue.dequeue()); |
| } |
| |
| public void testEnqueueAndPeek() { |
| Queue<String> queue = this.buildQueue(); |
| String first = "first"; |
| String second = "second"; |
| |
| queue.enqueue(first); |
| queue.enqueue(second); |
| assertEquals(first, queue.peek()); |
| assertEquals(first, queue.peek()); |
| assertEquals(first, queue.dequeue()); |
| assertEquals(second, queue.peek()); |
| assertEquals(second, queue.peek()); |
| assertEquals(second, queue.dequeue()); |
| } |
| |
| public void testEmptyQueueExceptionPeek() { |
| Queue<String> queue = this.buildQueue(); |
| String first = "first"; |
| String second = "second"; |
| |
| queue.enqueue(first); |
| queue.enqueue(second); |
| assertEquals(first, queue.peek()); |
| assertEquals(first, queue.dequeue()); |
| assertEquals(second, queue.peek()); |
| assertEquals(second, queue.dequeue()); |
| |
| boolean exCaught = false; |
| try { |
| queue.peek(); |
| fail(); |
| } catch (NoSuchElementException ex) { |
| exCaught = true; |
| } |
| assertTrue(exCaught); |
| } |
| |
| public void testEmptyQueueExceptionDequeue() { |
| Queue<String> queue = this.buildQueue(); |
| String first = "first"; |
| String second = "second"; |
| |
| queue.enqueue(first); |
| queue.enqueue(second); |
| assertEquals(first, queue.peek()); |
| assertEquals(first, queue.dequeue()); |
| assertEquals(second, queue.peek()); |
| assertEquals(second, queue.dequeue()); |
| |
| boolean exCaught = false; |
| try { |
| queue.dequeue(); |
| fail(); |
| } catch (NoSuchElementException ex) { |
| exCaught = true; |
| } |
| assertTrue(exCaught); |
| } |
| |
| public void testClone() { |
| SimpleQueue<String> queue = (SimpleQueue<String>) this.buildQueue(); |
| queue.enqueue("first"); |
| queue.enqueue("second"); |
| queue.enqueue("third"); |
| |
| this.verifyClone(queue, queue.clone()); |
| } |
| |
| public void testSerialization() throws Exception { |
| Queue<String> queue = this.buildQueue(); |
| queue.enqueue("first"); |
| queue.enqueue("second"); |
| queue.enqueue("third"); |
| |
| this.verifyClone(queue, TestTools.serialize(queue)); |
| } |
| |
| private void verifyClone(Queue<String> original, Queue<String> clone) { |
| assertNotSame(original, clone); |
| assertEquals(original.peek(), clone.peek()); |
| assertEquals(original.dequeue(), clone.dequeue()); |
| assertEquals(original.peek(), clone.peek()); |
| assertEquals(original.dequeue(), clone.dequeue()); |
| assertEquals(original.isEmpty(), clone.isEmpty()); |
| assertEquals(original.peek(), clone.peek()); |
| assertEquals(original.dequeue(), clone.dequeue()); |
| assertTrue(original.isEmpty()); |
| assertEquals(original.isEmpty(), clone.isEmpty()); |
| |
| original.enqueue("fourth"); |
| assertFalse(original.isEmpty()); |
| // clone should still be empty |
| assertTrue(clone.isEmpty()); |
| } |
| |
| } |