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1
3 package test.jmock.core.constraint;
4
5 import org.jmock.core.Constraint;
6 import org.jmock.core.constraint.IsEqual;
7
8
9 public class IsEqualTest extends AbstractConstraintsTest
10 {
11 public void testComparesObjectsUsingEqualsMethod() {
12 Integer  i1 = new Integer (1);
13 Integer i2 = new Integer (2);
14 Constraint c = new IsEqual(i1);
15
16 assertTrue(c.eval(i1));
17 assertTrue(c.eval(new Integer (1)));
18 assertTrue(!c.eval(i2));
19 }
20
21 public void testCanCompareNullValues() {
22 Integer i1 = new Integer (1);
23 Constraint c = new IsEqual(i1);
24
25 assertTrue(!c.eval(null));
26 Constraint nullEquals = new IsEqual(null);
27 assertTrue(nullEquals.eval(null));
28 assertTrue(!nullEquals.eval(i1));
29 }
30
31 public void testComparesTheElementsOfAnObjectArray() {
32 String [] s1 = new String []{"a", "b"};
33 String [] s2 = new String []{"a", "b"};
34 String [] s3 = new String []{"c", "d"};
35 String [] s4 = new String []{"a", "b", "c", "d"};
36
37 Constraint c = new IsEqual(s1);
38
39 assertTrue("Should equal itself", c.eval(s1));
40 assertTrue("Should equal a similar array", c.eval(s2));
41 assertTrue("Should not equal a different array", !c.eval(s3));
42 assertTrue("Should not equal a different sized array", !c.eval(s4));
43 }
44
45 public void testComparesTheElementsOfAnArrayOfPrimitiveTypes() {
46 int[] i1 = new int[]{1, 2};
47 int[] i2 = new int[]{1, 2};
48 int[] i3 = new int[]{3, 4};
49 int[] i4 = new int[]{1, 2, 3, 4};
50
51 Constraint c = new IsEqual(i1);
52
53 assertTrue("Should equal itself", c.eval(i1));
54 assertTrue("Should equal a similar array", c.eval(i2));
55 assertTrue("Should not equal a different array", !c.eval(i3));
56 assertTrue("Should not equal a different sized array", !c.eval(i4));
57 }
58
59 public void testRecursivelyTestsElementsOfArrays() {
60 int[][] i1 = new int[][]{{1, 2}, {3, 4}};
61 int[][] i2 = new int[][]{{1, 2}, {3, 4}};
62 int[][] i3 = new int[][]{{5, 6}, {7, 8}};
63 int[] i4 = new int[]{1, 2, 3, 4};
64 int[][] i5 = new int[][]{{1, 2, 3, 4}, {3, 4}};
65
66 Constraint c = new IsEqual(i1);
67
68 assertTrue("Should equal itself", c.eval(i1));
69 assertTrue("Should equal a similar array", c.eval(i2));
70 assertTrue("Should not equal a different array", !c.eval(i3));
71 assertTrue("Should not equal a different sized array", !c.eval(i4));
72 assertTrue("Should not equal a different sized subarray", !c.eval(i5));
73 }
74
75 public void testIncludesTheResultOfCallingToStringOnItsArgumentInTheDescription() {
76 final String argumentDescription = "ARGUMENT DESCRIPTION";
77 Object argument = new Object ()
78 {
79 public String toString() {
80 return argumentDescription;
81 }
82 };
83 Constraint c = new IsEqual(argument);
84
85 assertTrue("should contain argument's toString in toString result",
86 c.describeTo(new StringBuffer ()).toString().indexOf(argumentDescription) >= 0);
87 }
88
89 public void testReturnsAnObviousDescriptionIfCreatedWithANestedConstraintByMistake() {
90 IsEqual innerConstraint = new IsEqual("NestedConstraint");
91 assertEquals("should get an obvious description to reflect nesting if viewed in a debugger",
92 "eq(<" + innerConstraint.toString() + ">)",
93 (new IsEqual(innerConstraint)).describeTo(new StringBuffer ()).toString());
94 }
95
96 public void testReturnsGoodDescriptionIfCreatedWithNullReference() {
97 assertEquals("should get a description even if argument is null",
98 "eq(null)",
99 new IsEqual(null).describeTo(new StringBuffer ()).toString());
100 }
101 }
102
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