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1
16 package org.apache.commons.collections;
17
18 import java.util.EmptyStackException  ;
19 import java.util.List ;
20
21 import junit.framework.Test;
22
23
30 public class TestArrayStack extends TestArrayList {
31
32 protected ArrayStack stack = null;
33
34 public TestArrayStack(String testName) {
35 super(testName);
36 }
37
38 public static Test suite() {
39 return BulkTest.makeSuite(TestArrayStack.class);
40 }
41
42 public static void main(String args[]) {
43 String [] testCaseName = { TestArrayStack.class.getName() };
44 junit.textui.TestRunner.main(testCaseName);
45 }
46
47 public List makeEmptyList() {
48 return new ArrayStack();
49 }
50
51 public void setUp() {
52 stack = (ArrayStack) makeEmptyList();
53 list = stack;
54 }
55
56 public void testNewStack() {
58
59 assertTrue("New stack is empty", stack.empty());
60 assertEquals("New stack has size zero", stack.size(), 0);
61
62 try {
63 stack.peek();
64 fail("peek() should have thrown EmptyStackException");
65 } catch (EmptyStackException e) {
66 ; }
68
69 try {
70 stack.pop();
71 fail("pop() should have thrown EmptyStackException");
72 } catch (EmptyStackException e) {
73 ; }
75
76 }
77
78 public void testPushPeekPop() {
79
80 stack.push("First Item");
81 assertTrue("Stack is not empty", !stack.empty());
82 assertEquals("Stack size is one", stack.size(), 1);
83 assertEquals("Top item is 'First Item'",
84 (String ) stack.peek(), "First Item");
85 assertEquals("Stack size is one", stack.size(), 1);
86
87 stack.push("Second Item");
88 assertEquals("Stack size is two", stack.size(), 2);
89 assertEquals("Top item is 'Second Item'",
90 (String ) stack.peek(), "Second Item");
91 assertEquals("Stack size is two", stack.size(), 2);
92
93 assertEquals("Popped item is 'Second Item'",
94 (String ) stack.pop(), "Second Item");
95 assertEquals("Top item is 'First Item'",
96 (String ) stack.peek(), "First Item");
97 assertEquals("Stack size is one", stack.size(), 1);
98
99 assertEquals("Popped item is 'First Item'",
100 (String ) stack.pop(), "First Item");
101 assertEquals("Stack size is zero", stack.size(), 0);
102
103 }
104
105 public void testSearch() {
106
107 stack.push("First Item");
108 stack.push("Second Item");
109 assertEquals("Top item is 'Second Item'",
110 stack.search("Second Item"), 1);
111 assertEquals("Next Item is 'First Item'",
112 stack.search("First Item"), 2);
113 assertEquals("Cannot find 'Missing Item'",
114 stack.search("Missing Item"), -1);
115
116 }
117
118 }
119 |
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