| /******************************************************************************* |
| * Copyright (c) 2008, 2017 xored software, Inc. and others. |
| * |
| * 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: |
| * xored software, Inc. - initial API and Implementation (Alex Panchenko) |
| *******************************************************************************/ |
| package org.eclipse.dltk.core.tests.util; |
| |
| import static org.junit.Assert.assertEquals; |
| |
| import java.util.EmptyStackException; |
| |
| import org.eclipse.dltk.utils.CharacterStack; |
| import org.junit.Before; |
| import org.junit.Test; |
| |
| public class CharacterStackTests { |
| |
| private CharacterStack stack; |
| |
| @Before |
| public void setUp() throws Exception { |
| stack = new CharacterStack(); |
| } |
| |
| @Test |
| public void testPush() { |
| stack.push('A'); |
| assertEquals(1, stack.size()); |
| } |
| |
| @Test |
| public void testPop() { |
| stack.push('A'); |
| stack.push('B'); |
| assertEquals('B', stack.pop()); |
| assertEquals('A', stack.pop()); |
| } |
| |
| @Test |
| public void testPeek() { |
| stack.push('A'); |
| assertEquals('A', stack.peek()); |
| stack.push('B'); |
| assertEquals('B', stack.peek()); |
| } |
| |
| @Test(expected=EmptyStackException.class) |
| public void testEmptyPop() { |
| stack.pop(); |
| } |
| |
| @Test(expected=EmptyStackException.class) |
| public void testEmptyPeek() { |
| stack.peek(); |
| } |
| |
| } |