/*
* 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.commons.collections;
import java.util.EmptyStackException;
import java.util.List;
import junit.framework.Test;
/**
* Tests ArrayStack.
*
* @version $Revision: 646780 $ $Date: 2008-04-10 13:48:07 +0100 (Thu, 10 Apr 2008) $
*
* @author Craig McClanahan
*/
public class TestArrayStack extends TestArrayList {
protected ArrayStack stack = null;
public TestArrayStack(String testName) {
super(testName);
}
public static Test suite() {
return BulkTest.makeSuite(TestArrayStack.class);
}
public static void main(String args[]) {
String[] testCaseName = { TestArrayStack.class.getName() };
junit.textui.TestRunner.main(testCaseName);
}
public List makeEmptyList() {
return new ArrayStack();
}
public void setUp() {
stack = (ArrayStack) makeEmptyList();
list = stack;
}
//-----------------------------------------------------------------------
public void testNewStack() {
assertTrue("New stack is empty", stack.empty());
assertEquals("New stack has size zero", stack.size(), 0);
try {
stack.peek();
fail("peek() should have thrown EmptyStackException");
} catch (EmptyStackException e) {
; // Expected result
}
try {
stack.pop();
fail("pop() should have thrown EmptyStackException");
} catch (EmptyStackException e) {
; // Expected result
}
}
public void testPushPeekPop() {
stack.push("First Item");
assertTrue("Stack is not empty", !stack.empty());
assertEquals("Stack size is one", stack.size(), 1);
assertEquals("Top item is 'First Item'",
(String) stack.peek(), "First Item");
assertEquals("Stack size is one", stack.size(), 1);
stack.push("Second Item");
assertEquals("Stack size is two", stack.size(), 2);
assertEquals("Top item is 'Second Item'",
(String) stack.peek(), "Second Item");
assertEquals("Stack size is two", stack.size(), 2);
assertEquals("Popped item is 'Second Item'",
(String) stack.pop(), "Second Item");
assertEquals("Top item is 'First Item'",
(String) stack.peek(), "First Item");
assertEquals("Stack size is one", stack.size(), 1);
assertEquals("Popped item is 'First Item'",
(String) stack.pop(), "First Item");
assertEquals("Stack size is zero", stack.size(), 0);
}
public void testSearch() {
stack.push("First Item");
stack.push("Second Item");
assertEquals("Top item is 'Second Item'",
stack.search("Second Item"), 1);
assertEquals("Next Item is 'First Item'",
stack.search("First Item"), 2);
assertEquals("Cannot find 'Missing Item'",
stack.search("Missing Item"), -1);
}
}