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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 MutableByteTest extends TestCase {
30
31 public MutableByteTest(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(MutableByteTest.class);
41 }
42
43 public void testConstructors() {
45 assertEquals((byte) 0, new MutableByte().byteValue());
46
47 assertEquals((byte) 1, new MutableByte((byte) 1).byteValue());
48
49 assertEquals((byte) 2, new MutableByte(new Byte ((byte) 2)).byteValue());
50 assertEquals((byte) 3, new MutableByte(new MutableByte((byte) 3)).byteValue());
51 try {
52 new MutableByte(null);
53 fail();
54 } catch (NullPointerException ex) {}
55 }
56
57 public void testGetSet() {
58 final MutableByte mutNum = new MutableByte((byte) 0);
59 assertEquals((byte) 0, new MutableByte().byteValue());
60 assertEquals(new Byte ((byte) 0), new MutableByte().getValue());
61
62 mutNum.setValue((byte) 1);
63 assertEquals((byte) 1, mutNum.byteValue());
64 assertEquals(new Byte ((byte) 1), mutNum.getValue());
65
66 mutNum.setValue(new Byte ((byte) 2));
67 assertEquals((byte) 2, mutNum.byteValue());
68 assertEquals(new Byte ((byte) 2), mutNum.getValue());
69
70 mutNum.setValue(new MutableByte((byte) 3));
71 assertEquals((byte) 3, mutNum.byteValue());
72 assertEquals(new Byte ((byte) 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 MutableByte mutNumA = new MutableByte((byte) 0);
85 final MutableByte mutNumB = new MutableByte((byte) 0);
86 final MutableByte mutNumC = new MutableByte((byte) 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 Byte ((byte) 0)));
97 assertEquals(false, mutNumA.equals("0"));
98 }
99
100 public void testHashCode() {
101 final MutableByte mutNumA = new MutableByte((byte) 0);
102 final MutableByte mutNumB = new MutableByte((byte) 0);
103 final MutableByte mutNumC = new MutableByte((byte) 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 Byte ((byte) 0).hashCode());
109 }
110
111 public void testCompareTo() {
112 final MutableByte mutNum = new MutableByte((byte) 0);
113
114 assertEquals((byte) 0, mutNum.compareTo(new MutableByte((byte) 0)));
115 assertEquals((byte) +1, mutNum.compareTo(new MutableByte((byte) -1)));
116 assertEquals((byte) -1, mutNum.compareTo(new MutableByte((byte) 1)));
117 try {
118 mutNum.compareTo(null);
119 fail();
120 } catch (NullPointerException ex) {}
121 try {
122 mutNum.compareTo(new Byte ((byte) 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 MutableByte mutNum = new MutableByte( (byte) 1 );
133
134 assertEquals( 1.0F, mutNum.floatValue(), 0 );
135 assertEquals( 1.0, mutNum.doubleValue(), 0 );
136 assertEquals( (byte) 1, mutNum.byteValue() );
137 assertEquals( (short) 1, mutNum.shortValue() );
138 assertEquals( 1, mutNum.intValue() );
139 assertEquals( 1L, mutNum.longValue() );
140 }
141
142 public void testToString() {
143 assertEquals("0", new MutableByte((byte) 0).toString());
144 assertEquals("10", new MutableByte((byte) 10).toString());
145 assertEquals("-123", new MutableByte((byte) -123).toString());
146 }
147
148 }
149 |
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