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1 package com.thoughtworks.xstream.converters.extended;
2
3 import com.thoughtworks.acceptance.AbstractAcceptanceTest;
4 import junit.framework.AssertionFailedError;
5
6 import java.math.BigDecimal  ;
7
8
11 public class ThrowableConverterTest extends AbstractAcceptanceTest {
12
13 public void testDeserializesThrowable() {
14 Throwable expected = new Throwable ();
15 Throwable result = (Throwable ) xstream.fromXML(xstream.toXML(expected));
16 assertThrowableEquals(expected, result);
17 }
18
19 public void testDeserializesException() {
20 Exception expected = new Exception ();
21 Throwable result = (Throwable ) xstream.fromXML(xstream.toXML(expected));
22 assertThrowableEquals(expected, result);
23 }
24
25 public void testIncludesMessage() {
26 Throwable expected = new Throwable ("A MESSAGE");
27 Throwable result = (Throwable ) xstream.fromXML(xstream.toXML(expected));
28 assertThrowableEquals(expected, result);
29 }
30
31 public void testIncludesCause() {
32 Throwable expected = new Throwable (new Throwable ());
33 Throwable result = (Throwable ) xstream.fromXML(xstream.toXML(expected));
34 assertThrowableEquals(expected, result);
35 }
36
37 public void testIncludesCauseAndMessage() {
38 Throwable expected = new Throwable ("MESSAGE", new Throwable ("CAUSE MESSAGE"));
39 Throwable result = (Throwable ) xstream.fromXML(xstream.toXML(expected));
40 assertThrowableEquals(expected, result);
41 }
42
43 public void testIncludesStackTrace() {
44 try {
45 throw new Exception ();
46 } catch (Exception exception) {
47 Throwable result = (Throwable ) xstream.fromXML(xstream.toXML(exception));
48 assertThrowableEquals(exception, result);
49 }
50 }
51
52 public static class MyException extends Exception {
53 private BigDecimal number;
54
55 public MyException(String msg, BigDecimal number) {
56 super(msg);
57 this.number = number;
58 }
59
60 public boolean equals(Object o) {
61 return super.equals(o) && o instanceof MyException && number.equals(((MyException)o).number);
62 }
63
64 }
65
66 public void testSerializesExtraFields() {
67 try {
68 throw new MyException("A MESSAGE", new BigDecimal (123.4));
69 } catch (MyException exception) {
70 Throwable result = (Throwable ) xstream.fromXML(xstream.toXML(exception));
71 assertThrowableEquals(exception, result);
72 }
73 }
74
75 private static void assertThrowableEquals(final Throwable a,
76 final Throwable b) {
77 assertBoth(a, b, new MoreAssertions() {
78 public void assertMoreSafely(final Object a,
79 final Object b) {
80 final Throwable ta = (Throwable ) a, tb = (Throwable ) b;
81 assertEquals(ta.getClass(), tb.getClass());
82 assertEquals(ta.getMessage(), tb.getMessage());
83 assertThrowableEquals(ta.getCause(), tb.getCause());
84 assertArrayEquals(ta.getStackTrace(), tb.getStackTrace());
85 }
86 });
87 }
88
89 private static void assertArrayEquals(final Object [] expected, final Object [] actual) {
90 StringBuffer expectedJoined = new StringBuffer ();
91 StringBuffer actualJoined = new StringBuffer ();
92 for (int i = 0; i < expected.length; i++) {
93 expectedJoined.append(expected[i]).append('\n');
94 }
95 for (int i = 0; i < actual.length; i++) {
96 actualJoined.append(actual[i]).append('\n');
97 }
98 assertEquals(expectedJoined.toString(), actualJoined.toString());
99 }
100
101 private static void assertBoth(Object a, Object b, MoreAssertions moreAssertions) {
102 if (null == a) {
103 if (null == b) {
104 return;
105 } else {
106 fail("Expected null, but was <" + b + ">");
107 }
108 } else if (null == b) {
109 fail("Expected <" + a + "> but was null");
110 } else {
111 moreAssertions.assertMoreSafely(a, b);
112 }
113 }
114
115 private interface MoreAssertions {
116 void assertMoreSafely(final Object a, final Object b);
117 }
118
119 }
120 |
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