|
1
4 package com.tc.stats;
5
6 import junit.framework.TestCase;
7
8 public class LossyStackTest extends TestCase {
9
10 public void testException() {
11 try {
12 new LossyStack(0);
13 fail();
14 } catch (IllegalArgumentException  iae) {
15 }
17
18 try {
19 new LossyStack(-4);
20 fail();
21 } catch (IllegalArgumentException iae) {
22 }
24
25 }
26
27 public void test() {
28 LossyStack stack = new LossyStack(5);
29 assertEquals(0, stack.depth());
30 assertTrue(stack.isEmtpy());
31 assertNull(stack.peek());
32
33 try {
34 stack.pop();
35 fail();
36 } catch (IllegalStateException ise) {
37 }
39
40 stack.push(new Integer (1));
41 assertFalse(stack.isEmtpy());
42 assertEquals(1, stack.depth());
43 stack.push(new Integer (2));
44 assertFalse(stack.isEmtpy());
45 assertEquals(2, stack.depth());
46
47 assertEquals(new Integer (2), stack.pop());
48 assertFalse(stack.isEmtpy());
49 assertEquals(new Integer (1), stack.pop());
50 assertEquals(0, stack.depth());
51 assertTrue(stack.isEmtpy());
52 assertNull(stack.peek());
53
54 stack.push(new Integer (1));
55 stack.push(new Integer (2));
56 stack.push(new Integer (3));
57 stack.push(new Integer (4));
58 stack.push(new Integer (5));
59 assertEquals(5, stack.depth());
60 stack.push(new Integer (6));
61 assertEquals(5, stack.depth());
62 stack.push(new Integer (7));
63 assertEquals(5, stack.depth());
64
65 Integer [] data = (Integer []) stack.toArray(new Integer [stack.depth()]);
66 assertEquals(5, data.length);
67 for (int i = 0; i < data.length; i++) {
68 assertEquals(new Integer (7 - i), data[i]);
69 }
70
71 }
72
73 }
74 |
Popular Tags |
Java API By Example, From Geeks To Geeks.