| /******************************************************************************* |
| * Copyright (c) 2007 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.utility.tests.internal; |
| |
| import java.util.EmptyStackException; |
| import junit.framework.TestCase; |
| import org.eclipse.jpt.utility.internal.SimpleStack; |
| import org.eclipse.jpt.utility.internal.Stack; |
| |
| public class SimpleStackTests extends TestCase { |
| |
| public SimpleStackTests(String name) { |
| super(name); |
| } |
| |
| public void testIsEmpty() { |
| Stack<String> stack = new SimpleStack<String>(); |
| assertTrue(stack.isEmpty()); |
| stack.push("first"); |
| assertFalse(stack.isEmpty()); |
| stack.push("second"); |
| assertFalse(stack.isEmpty()); |
| stack.pop(); |
| assertFalse(stack.isEmpty()); |
| stack.pop(); |
| assertTrue(stack.isEmpty()); |
| } |
| |
| public void testPushAndPop() { |
| Stack<String> stack = new SimpleStack<String>(); |
| String first = "first"; |
| String second = "second"; |
| |
| stack.push(first); |
| stack.push(second); |
| assertEquals(second, stack.pop()); |
| assertEquals(first, stack.pop()); |
| } |
| |
| public void testPushAndPeek() { |
| Stack<String> stack = new SimpleStack<String>(); |
| String first = "first"; |
| String second = "second"; |
| |
| stack.push(first); |
| stack.push(second); |
| assertEquals(second, stack.peek()); |
| assertEquals(second, stack.peek()); |
| assertEquals(second, stack.pop()); |
| assertEquals(first, stack.peek()); |
| assertEquals(first, stack.peek()); |
| assertEquals(first, stack.pop()); |
| } |
| |
| public void testEmptyStackExceptionPeek() { |
| Stack<String> stack = new SimpleStack<String>(); |
| String first = "first"; |
| String second = "second"; |
| |
| stack.push(first); |
| stack.push(second); |
| assertEquals(second, stack.peek()); |
| assertEquals(second, stack.pop()); |
| assertEquals(first, stack.peek()); |
| assertEquals(first, stack.pop()); |
| |
| boolean exCaught = false; |
| try { |
| stack.peek(); |
| } catch (EmptyStackException ex) { |
| exCaught = true; |
| } |
| assertTrue(exCaught); |
| } |
| |
| public void testEmptyStackExceptionPop() { |
| Stack<String> stack = new SimpleStack<String>(); |
| String first = "first"; |
| String second = "second"; |
| |
| stack.push(first); |
| stack.push(second); |
| assertEquals(second, stack.peek()); |
| assertEquals(second, stack.pop()); |
| assertEquals(first, stack.peek()); |
| assertEquals(first, stack.pop()); |
| |
| boolean exCaught = false; |
| try { |
| stack.pop(); |
| } catch (EmptyStackException ex) { |
| exCaught = true; |
| } |
| assertTrue(exCaught); |
| } |
| |
| public void testClone() { |
| SimpleStack<String> stack = new SimpleStack<String>(); |
| stack.push("first"); |
| stack.push("second"); |
| stack.push("third"); |
| |
| this.verifyClone(stack, stack.clone()); |
| } |
| |
| public void testSerialization() throws Exception { |
| SimpleStack<String> stack = new SimpleStack<String>(); |
| stack.push("first"); |
| stack.push("second"); |
| stack.push("third"); |
| |
| this.verifyClone(stack, TestTools.serialize(stack)); |
| } |
| |
| private void verifyClone(Stack<String> original, Stack<String> clone) { |
| assertNotSame(original, clone); |
| assertEquals(original.peek(), clone.peek()); |
| assertEquals(original.pop(), clone.pop()); |
| assertEquals(original.peek(), clone.peek()); |
| assertEquals(original.pop(), clone.pop()); |
| assertEquals(original.isEmpty(), clone.isEmpty()); |
| assertEquals(original.peek(), clone.peek()); |
| assertEquals(original.pop(), clone.pop()); |
| assertTrue(original.isEmpty()); |
| assertEquals(original.isEmpty(), clone.isEmpty()); |
| |
| original.push("fourth"); |
| assertFalse(original.isEmpty()); |
| // clone should still be empty |
| assertTrue(clone.isEmpty()); |
| } |
| |
| } |