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1 /*
2  * The JUnit-addons Software License, Version 1.0
3  * (based on the Apache Software License, Version 1.1)
4  *
5  * Copyright (c) 2002-2003 Vladimir R. Bossicard. All rights reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  *
11  * 1. Redistributions of source code must retain the above copyright
12  * notice, this list of conditions and the following disclaimer.
13  *
14  * 2. Redistributions in binary form must reproduce the above copyright
15  * notice, this list of conditions and the following disclaimer in
16  * the documentation and/or other materials provided with the
17  * distribution.
18  *
19  * 3. The end-user documentation included with the redistribution, if
20  * any, must include the following acknowlegement:
21  * "This product includes software developed by Vladimir R.
22  * Bossicard as well as other contributors
23  * (http://junit-addons.sourceforge.net/)."
24  * Alternately, this acknowlegement may appear in the software itself,
25  * if and wherever such third-party acknowlegements normally appear.
26  *
27  * 4. The name "JUnit-addons" must not be used to endorse or promote
28  * products derived from this software without prior written
29  * permission. For written permission, please contact
30  * vbossica@users.sourceforge.net.
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32  * 5. Products derived from this software may not be called "JUnit-addons"
33  * nor may "JUnit-addons" appear in their names without prior written
34  * permission of the project managers.
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36  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
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50  * This software consists of voluntary contributions made by many
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52  * see <http://junit-addons.sourceforge.net/>.
53  */
54
55 package junitx.framework;
56
57 import java.io.PrintStream JavaDoc;
58 import java.io.PrintWriter JavaDoc;
59
60 /**
61  * Similar to the official class but supports chained exceptions.
62  *
63  * <h4>Usage</h4>
64  * To use this new class, you'll have to invoke the <tt>fail</tt> method of the
65  * <tt>junitx.framework.Assert</tt> class:
66  *
67  * <pre>
68  * junitx.framework.Assert.fail(exception);
69  * </pre>
70  *
71  * @version $Revision: 1.1 $ $Date: 2003/03/21 06:13:48 $
72  * @author <a HREF="mailto:vbossica@users.sourceforge.net">Vladimir R. Bossicard</a>
73  */
74 public class AssertionFailedError extends junit.framework.AssertionFailedError {
75
76     private Throwable JavaDoc cause;
77
78     /**
79      * Constructs a new throwable with the specified cause and a detail message
80      * of <tt>(cause==null ? null : cause.toString())</tt> (which typically
81      * contains the class and detail message of <tt>cause</tt>).<p>
82      *
83      * @param cause the cause (which is saved for later retrieval by the
84      * getCause() method). (A null value is permitted, and indicates that the
85      * cause is nonexistent or unknown.)
86      */
87     public AssertionFailedError(Throwable JavaDoc cause) {
88         this(cause == null ? null : cause.toString(), cause);
89     }
90
91     /**
92      * Constructs a new throwable with the specified detail message and cause.
93      *
94      * Note that the detail message associated with cause is not automatically
95      * incorporated in this throwable's detail message.
96      *
97      * @param message the detail message (which is saved for later retrieval by
98      * the getMessage() method).
99      * @param cause the cause (which is saved for later retrieval by the
100      * getCause() method). (A null value is permitted, and indicates that the
101      * cause is nonexistent or unknown.)
102      */
103     public AssertionFailedError(String JavaDoc message,
104                                 Throwable JavaDoc cause) {
105         super(message);
106         this.cause = cause;
107     }
108
109     /**
110      * Returns the cause of this throwable or null if the cause is nonexistent
111      * or unknown. (The cause is the throwable that caused this throwable to get
112      * thrown.)
113      */
114     public Throwable JavaDoc getCause() {
115         return cause;
116     }
117
118     /**
119      * Prints this throwable and its backtrace to the standard error stream. This
120      * method prints a stack trace for this Throwable object on the error output
121      * stream that is the value of the field System.err. The first line of output
122      * contains the result of the toString() method for this object. Remaining lines
123      * represent data previously recorded by the method fillInStackTrace().
124      *
125      * @see java.lang.Throwable#printStackTrace()
126      */
127     public void printStackTrace() {
128         printStackTrace(System.err);
129     }
130
131     /**
132      * Prints this throwable and its backtrace to the specified print stream.
133      * s - PrintStream to use for output
134      * @see java.lang.Throwable#printStackTrace(PrintStream)
135      */
136     public void printStackTrace(PrintStream JavaDoc s) {
137         super.printStackTrace(s);
138         if (this.cause != null) {
139             s.print("Caused by: ");
140             this.cause.printStackTrace(s);
141         }
142     }
143
144     /**
145      * Prints this throwable and its backtrace to the specified print writer.
146      *
147      * @param s <tt>PrintWriter</tt> to use for output
148      * @see java.lang.Throwable#printStackTrace(PrintWriter)
149      */
150     public void printStackTrace(PrintWriter JavaDoc s) {
151         super.printStackTrace(s);
152         if (this.cause != null) {
153             s.print("Caused by: ");
154             this.cause.printStackTrace(s);
155         }
156     }
157
158 }
159
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