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Java > Open Source Codes > org > jfree > chart > annotations > junit > XYImageAnnotationTests


1 /* ===========================================================
2  * JFreeChart : a free chart library for the Java(tm) platform
3  * ===========================================================
4  *
5  * (C) Copyright 2000-2005, by Object Refinery Limited and Contributors.
6  *
7  * Project Info: http://www.jfree.org/jfreechart/index.html
8  *
9  * This library is free software; you can redistribute it and/or modify it
10  * under the terms of the GNU Lesser General Public License as published by
11  * the Free Software Foundation; either version 2.1 of the License, or
12  * (at your option) any later version.
13  *
14  * This library is distributed in the hope that it will be useful, but
15  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
16  * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
17  * License for more details.
18  *
19  * You should have received a copy of the GNU Lesser General Public
20  * License along with this library; if not, write to the Free Software
21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
22  * USA.
23  *
24  * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
25  * in the United States and other countries.]
26  *
27  * ---------------------------
28  * XYImageAnnotationTests.java
29  * ---------------------------
30  * (C) Copyright 2004, 2005, by Object Refinery Limited and Contributors.
31  *
32  * Original Author: David Gilbert (for Object Refinery Limited);
33  * Contributor(s): -;
34  *
35  * $Id: XYImageAnnotationTests.java,v 1.1.2.1 2006/10/03 15:41:40 mungady Exp $
36  *
37  * Changes
38  * -------
39  * 17-May-2004 : Version 1 (DG);
40  *
41  */
42
43 package org.jfree.chart.annotations.junit;
44
45 import java.io.ByteArrayInputStream JavaDoc;
46 import java.io.ByteArrayOutputStream JavaDoc;
47 import java.io.ObjectInput JavaDoc;
48 import java.io.ObjectInputStream JavaDoc;
49 import java.io.ObjectOutput JavaDoc;
50 import java.io.ObjectOutputStream JavaDoc;
51
52 import junit.framework.Test;
53 import junit.framework.TestCase;
54 import junit.framework.TestSuite;
55
56 import org.jfree.chart.JFreeChart;
57 import org.jfree.chart.annotations.XYImageAnnotation;
58
59 /**
60  * Tests for the {@link XYImageAnnotation} class.
61  */
62 public class XYImageAnnotationTests extends TestCase {
63
64     /**
65      * Returns the tests as a test suite.
66      *
67      * @return The test suite.
68      */
69     public static Test suite() {
70         return new TestSuite(XYImageAnnotationTests.class);
71     }
72
73     /**
74      * Constructs a new set of tests.
75      *
76      * @param name the name of the tests.
77      */
78     public XYImageAnnotationTests(String JavaDoc name) {
79         super(name);
80     }
81
82     /**
83      * Confirm that the equals method can distinguish all the required fields.
84      */
85     public void testEquals() {
86         XYImageAnnotation a1 = new XYImageAnnotation(
87             10.0, 20.0, JFreeChart.INFO.getLogo()
88         );
89         XYImageAnnotation a2 = new XYImageAnnotation(
90             10.0, 20.0, JFreeChart.INFO.getLogo()
91         );
92         assertTrue(a1.equals(a2));
93     }
94
95     /**
96      * Two objects that are equal are required to return the same hashCode.
97      */
98     public void testHashCode() {
99         XYImageAnnotation a1 = new XYImageAnnotation(
100             10.0, 20.0, JFreeChart.INFO.getLogo()
101         );
102         XYImageAnnotation a2 = new XYImageAnnotation(
103             10.0, 20.0, JFreeChart.INFO.getLogo()
104         );
105         assertTrue(a1.equals(a2));
106         int h1 = a1.hashCode();
107         int h2 = a2.hashCode();
108         assertEquals(h1, h2);
109     }
110     
111     /**
112      * Confirm that cloning works.
113      */
114     public void testCloning() {
115         XYImageAnnotation a1 = new XYImageAnnotation(
116             10.0, 20.0, JFreeChart.INFO.getLogo()
117         );
118         XYImageAnnotation a2 = null;
119         try {
120             a2 = (XYImageAnnotation) a1.clone();
121         }
122         catch (CloneNotSupportedException JavaDoc e) {
123             System.err.println("Failed to clone.");
124         }
125         assertTrue(a1 != a2);
126         assertTrue(a1.getClass() == a2.getClass());
127         assertTrue(a1.equals(a2));
128     }
129
130     /**
131      * Serialize an instance, restore it, and check for equality.
132      */
133     public void testSerialization() {
134
135         XYImageAnnotation a1 = new XYImageAnnotation(
136             10.0, 20.0, JFreeChart.INFO.getLogo()
137         );
138         XYImageAnnotation a2 = null;
139
140         try {
141             ByteArrayOutputStream JavaDoc buffer = new ByteArrayOutputStream JavaDoc();
142             ObjectOutput JavaDoc out = new ObjectOutputStream JavaDoc(buffer);
143             out.writeObject(a1);
144             out.close();
145
146             ObjectInput JavaDoc in = new ObjectInputStream JavaDoc(
147                 new ByteArrayInputStream JavaDoc(buffer.toByteArray())
148             );
149             a2 = (XYImageAnnotation) in.readObject();
150             in.close();
151         }
152         catch (Exception JavaDoc e) {
153             System.out.println(e.toString());
154         }
155         assertEquals(a1, a2);
156
157     }
158
159 }
160
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