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16 package org.apache.commons.lang.mutable;
17
18 import junit.framework.Test;
19 import junit.framework.TestCase;
20 import junit.framework.TestSuite;
21 import junit.textui.TestRunner;
22
23
29 public class MutableIntTest extends TestCase {
30
31 public MutableIntTest(String  testName) {
32 super(testName);
33 }
34
35 public static void main(String [] args) {
36 TestRunner.run(suite());
37 }
38
39 public static Test suite() {
40 return new TestSuite(MutableIntTest.class);
41 }
42
43 public void testConstructors() {
45 assertEquals(0, new MutableInt().intValue());
46
47 assertEquals(1, new MutableInt(1).intValue());
48
49 assertEquals(2, new MutableInt(new Integer (2)).intValue());
50 assertEquals(3, new MutableInt(new MutableLong(3)).intValue());
51 try {
52 new MutableInt(null);
53 fail();
54 } catch (NullPointerException ex) {}
55 }
56
57 public void testGetSet() {
58 final MutableInt mutNum = new MutableInt(0);
59 assertEquals(0, new MutableInt().intValue());
60 assertEquals(new Integer (0), new MutableInt().getValue());
61
62 mutNum.setValue(1);
63 assertEquals(1, mutNum.intValue());
64 assertEquals(new Integer (1), mutNum.getValue());
65
66 mutNum.setValue(new Integer (2));
67 assertEquals(2, mutNum.intValue());
68 assertEquals(new Integer (2), mutNum.getValue());
69
70 mutNum.setValue(new MutableLong(3));
71 assertEquals(3, mutNum.intValue());
72 assertEquals(new Integer (3), mutNum.getValue());
73 try {
74 mutNum.setValue(null);
75 fail();
76 } catch (NullPointerException ex) {}
77 try {
78 mutNum.setValue("0");
79 fail();
80 } catch (ClassCastException ex) {}
81 }
82
83 public void testEquals() {
84 final MutableInt mutNumA = new MutableInt(0);
85 final MutableInt mutNumB = new MutableInt(0);
86 final MutableInt mutNumC = new MutableInt(1);
87
88 assertEquals(true, mutNumA.equals(mutNumA));
89 assertEquals(true, mutNumA.equals(mutNumB));
90 assertEquals(true, mutNumB.equals(mutNumA));
91 assertEquals(true, mutNumB.equals(mutNumB));
92 assertEquals(false, mutNumA.equals(mutNumC));
93 assertEquals(false, mutNumB.equals(mutNumC));
94 assertEquals(true, mutNumC.equals(mutNumC));
95 assertEquals(false, mutNumA.equals(null));
96 assertEquals(false, mutNumA.equals(new Integer (0)));
97 assertEquals(false, mutNumA.equals("0"));
98 }
99
100 public void testHashCode() {
101 final MutableInt mutNumA = new MutableInt(0);
102 final MutableInt mutNumB = new MutableInt(0);
103 final MutableInt mutNumC = new MutableInt(1);
104
105 assertEquals(true, mutNumA.hashCode() == mutNumA.hashCode());
106 assertEquals(true, mutNumA.hashCode() == mutNumB.hashCode());
107 assertEquals(false, mutNumA.hashCode() == mutNumC.hashCode());
108 assertEquals(true, mutNumA.hashCode() == new Integer (0).hashCode());
109 }
110
111 public void testCompareTo() {
112 final MutableInt mutNum = new MutableInt(0);
113
114 assertEquals(0, mutNum.compareTo(new MutableInt(0)));
115 assertEquals(+1, mutNum.compareTo(new MutableInt(-1)));
116 assertEquals(-1, mutNum.compareTo(new MutableInt(1)));
117 try {
118 mutNum.compareTo(null);
119 fail();
120 } catch (NullPointerException ex) {}
121 try {
122 mutNum.compareTo(new Integer (0));
123 fail();
124 } catch (ClassCastException ex) {}
125 try {
126 mutNum.compareTo("0");
127 fail();
128 } catch (ClassCastException ex) {}
129 }
130
131 public void testPrimitiveValues() {
132 MutableInt mutNum = new MutableInt(1);
133
134 assertEquals( (byte) 1, mutNum.byteValue() );
135 assertEquals( (short) 1, mutNum.shortValue() );
136 assertEquals( 1.0F, mutNum.floatValue(), 0 );
137 assertEquals( 1.0, mutNum.doubleValue(), 0 );
138 assertEquals( 1L, mutNum.longValue() );
139 }
140
141 public void testToString() {
142 assertEquals("0", new MutableInt(0).toString());
143 assertEquals("10", new MutableInt(10).toString());
144 assertEquals("-123", new MutableInt(-123).toString());
145 }
146
147 }
148 |
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