1 package org.junit.tests.experimental.theories.internal;
2
3 import static org.hamcrest.CoreMatchers.containsString;
4 import static org.hamcrest.CoreMatchers.is;
5 import static org.hamcrest.CoreMatchers.not;
6 import static org.junit.Assert.assertThat;
7 import static org.junit.Assert.assertFalse;
8 import static org.junit.Assume.assumeThat;
9
10 import org.junit.Test;
11 import org.junit.experimental.theories.DataPoint;
12 import org.junit.experimental.theories.Theories;
13 import org.junit.experimental.theories.Theory;
14 import org.junit.experimental.theories.internal.ParameterizedAssertionError;
15 import org.junit.runner.RunWith;
16
17 @RunWith(Theories.class)
18 public class ParameterizedAssertionErrorTest {
19 @DataPoint
20 public static final String METHOD_NAME = "methodName";
21
22 @DataPoint
23 public static final NullPointerException NULL_POINTER_EXCEPTION = new NullPointerException();
24
25 @DataPoint
26 public static Object[] NO_OBJECTS = new Object[0];
27
28 @DataPoint
29 public static ParameterizedAssertionError A = new ParameterizedAssertionError(
30 NULL_POINTER_EXCEPTION, METHOD_NAME);
31
32 @DataPoint
33 public static ParameterizedAssertionError B = new ParameterizedAssertionError(
34 NULL_POINTER_EXCEPTION, METHOD_NAME);
35
36 @DataPoint
37 public static ParameterizedAssertionError B2 = new ParameterizedAssertionError(
38 NULL_POINTER_EXCEPTION, "methodName2");
39
40 @Theory
41 public void equalParameterizedAssertionErrorsHaveSameToString(
42 ParameterizedAssertionError a, ParameterizedAssertionError b) {
43 assumeThat(a, is(b));
44 assertThat(a.toString(), is(b.toString()));
45 }
46
47 @Theory
48 public void differentParameterizedAssertionErrorsHaveDifferentToStrings(
49 ParameterizedAssertionError a, ParameterizedAssertionError b) {
50 assumeThat(a, not(b));
51 assertThat(a.toString(), not(b.toString()));
52 }
53
54 @Theory
55 public void equalsReturnsTrue(Throwable targetException, String methodName,
56 Object[] params) {
57 assertThat(
58 new ParameterizedAssertionError(targetException, methodName, params),
59 is(new ParameterizedAssertionError(targetException, methodName, params)));
60 }
61
62 @Theory
63 public void sameHashCodeWhenEquals(Throwable targetException, String methodName,
64 Object[] params) {
65 ParameterizedAssertionError one = new ParameterizedAssertionError(
66 targetException, methodName, params);
67 ParameterizedAssertionError two = new ParameterizedAssertionError(
68 targetException, methodName, params);
69 assumeThat(one, is(two));
70
71 assertThat(one.hashCode(), is(two.hashCode()));
72 }
73
74 @Theory(nullsAccepted = false)
75 public void buildParameterizedAssertionError(String methodName, String param) {
76 assertThat(new ParameterizedAssertionError(
77 new RuntimeException(), methodName, param).toString(),
78 containsString(methodName));
79 }
80
81 @Theory
82 public void isNotEqualToNull(ParameterizedAssertionError a) {
83 assertFalse(a.equals(null));
84 }
85
86 @Test
87 public void canJoinWhenToStringFails() {
88 assertThat(ParameterizedAssertionError.join(" ", new Object() {
89 @Override
90 public String toString() {
91 throw new UnsupportedOperationException();
92 }
93 }), is("[toString failed]"));
94 }
95 }