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Java > Open Source Codes > org > jfree > chart > renderer > xy > junit > XYDotRendererTests


1 /* ===========================================================
2  * JFreeChart : a free chart library for the Java(tm) platform
3  * ===========================================================
4  *
5  * (C) Copyright 2000-2006, 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  * XYDotRendererTests.java
29  * -----------------------
30  * (C) Copyright 2003-2006, by Object Refinery Limited and Contributors.
31  *
32  * Original Author: David Gilbert (for Object Refinery Limited);
33  * Contributor(s): -;
34  *
35  * $Id: XYDotRendererTests.java,v 1.1.2.1 2006/10/03 15:41:45 mungady Exp $
36  *
37  * Changes
38  * -------
39  * 25-Mar-2003 : Version 1 (DG);
40  *
41  */
42
43 package org.jfree.chart.renderer.xy.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.renderer.xy.XYDotRenderer;
57
58 /**
59  * Tests for the {@link XYDotRenderer} class.
60  */
61 public class XYDotRendererTests extends TestCase {
62
63     /**
64      * Returns the tests as a test suite.
65      *
66      * @return The test suite.
67      */
68     public static Test suite() {
69         return new TestSuite(XYDotRendererTests.class);
70     }
71
72     /**
73      * Constructs a new set of tests.
74      *
75      * @param name the name of the tests.
76      */
77     public XYDotRendererTests(String JavaDoc name) {
78         super(name);
79     }
80
81     /**
82      * Check that the equals() method distinguishes all fields.
83      */
84     public void testEquals() {
85         XYDotRenderer r1 = new XYDotRenderer();
86         XYDotRenderer r2 = new XYDotRenderer();
87         assertEquals(r1, r2);
88         
89         r1.setDotWidth(11);
90         assertFalse(r1.equals(r2));
91         r2.setDotWidth(11);
92         assertTrue(r1.equals(r2));
93         
94         r1.setDotHeight(12);
95         assertFalse(r1.equals(r2));
96         r2.setDotHeight(12);
97         assertTrue(r1.equals(r2));
98     }
99
100     /**
101      * Two objects that are equal are required to return the same hashCode.
102      */
103     public void testHashcode() {
104         XYDotRenderer r1 = new XYDotRenderer();
105         XYDotRenderer r2 = new XYDotRenderer();
106         assertTrue(r1.equals(r2));
107         int h1 = r1.hashCode();
108         int h2 = r2.hashCode();
109         assertEquals(h1, h2);
110         
111         r1.setDotHeight(12);
112         r2.setDotHeight(12);
113         assertTrue(r1.equals(r2));
114         h1 = r1.hashCode();
115         h2 = r2.hashCode();
116         assertEquals(h1, h2);
117     }
118     
119     /**
120      * Confirm that cloning works.
121      */
122     public void testCloning() {
123         XYDotRenderer r1 = new XYDotRenderer();
124         XYDotRenderer r2 = null;
125         try {
126             r2 = (XYDotRenderer) r1.clone();
127         }
128         catch (CloneNotSupportedException JavaDoc e) {
129             e.printStackTrace();
130         }
131         assertTrue(r1 != r2);
132         assertTrue(r1.getClass() == r2.getClass());
133         assertTrue(r1.equals(r2));
134     }
135
136     /**
137      * Serialize an instance, restore it, and check for equality.
138      */
139     public void testSerialization() {
140
141         XYDotRenderer r1 = new XYDotRenderer();
142         XYDotRenderer r2 = null;
143
144         try {
145             ByteArrayOutputStream JavaDoc buffer = new ByteArrayOutputStream JavaDoc();
146             ObjectOutput JavaDoc out = new ObjectOutputStream JavaDoc(buffer);
147             out.writeObject(r1);
148             out.close();
149
150             ObjectInput JavaDoc in = new ObjectInputStream JavaDoc(
151                     new ByteArrayInputStream JavaDoc(buffer.toByteArray()));
152             r2 = (XYDotRenderer) in.readObject();
153             in.close();
154         }
155         catch (Exception JavaDoc e) {
156             e.printStackTrace();
157         }
158         assertEquals(r1, r2);
159
160     }
161
162 }
163
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