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1 package tests.jfun.yan.tck;
2
3 import junit.framework.TestCase;
4
5 import java.util.ArrayList  ;
6 import java.util.List ;
7
8
15 public class EqualsTestCase extends TestCase {
16 public static interface Tester {
17 void compare(Object o1, Object o2);
18 }
19
20 private List objects = new ArrayList ();
21
22 protected void setUp() throws Exception {
23 objects.add("hello");
24 objects.add("world");
25 objects.add("blah");
26 }
27
28 public void testSameObjectsShouldBeReflexive() {
29 testAll(objects.toArray(), new Tester(){
30 public void compare(Object o1, Object o2) {
31 if(o1 == o2) {
32 assertTrue("Should be reflexive", o1.equals(o2));
33 }
34 }
35 });
36 }
37
38 public void testObjectsShouldBeSymetricallyEqual() {
39 testAll(objects.toArray(), new Tester(){
40 public void compare(Object o1, Object o2) {
41 if(o1.equals(o2)) {
42 assertTrue("Should be symmetric", o2.equals(o1));
43 }
44 }
45 });
46 }
47
48 public void testEqualityShouldBeTransitive() {
49 testAll(objects.toArray(), new Tester(){
50 public void compare(Object o1, Object o2) {
51 if(o1.equals(o2)) {
52 assertTrue("Should be symmetric", o2.equals(o1));
53 }
54 }
55 });
56 }
57
58 public void testAll(Object [] oa, Tester tester) {
59 for (int i = 0; i < oa.length; i++) {
60 Object o1 = oa[i];
61 for (int j = oa.length - 1; j >= 0; j--) {
62 Object o2 = oa[j];
63 tester.compare(o1, o2);
64 }
65 }
66 }
67
68 }
69 |
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