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 License
20 * along with this library; if not, write to the Free Software Foundation,
21 * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
22 *
23 * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
24 * in the United States and other countries.]
25 *
26 * -------------------------------------
27 * DefaultCategoryItemRendererTests.java
28 * -------------------------------------
29 * (C) Copyright 2003-2005, by Object Refinery Limited and Contributors.
30 *
31 * Original Author: David Gilbert (for Object Refinery Limited);
32 * Contributor(s): -;
33 *
34 * $Id: DefaultCategoryItemRendererTests.java,v 1.3 2005/03/08 10:35:26 mungady Exp $
35 *
36 * Changes
37 * -------
38 * 29-Apr-2003 : Version 1 (DG);
39 * 22-Oct-2003 : Added hashCode test (DG);
40 *
41 */
42
43 package org.jfree.chart.renderer.category.junit;
44
45 import java.io.ByteArrayInputStream;
46 import java.io.ByteArrayOutputStream;
47 import java.io.ObjectInput;
48 import java.io.ObjectInputStream;
49 import java.io.ObjectOutput;
50 import java.io.ObjectOutputStream;
51
52 import junit.framework.Test;
53 import junit.framework.TestCase;
54 import junit.framework.TestSuite;
55
56 import org.jfree.chart.renderer.category.DefaultCategoryItemRenderer;
57
58 /**
59 * Tests for the {@link DefaultCategoryItemRenderer} class.
60 */
61 public class DefaultCategoryItemRendererTests 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(DefaultCategoryItemRendererTests.class);
70 }
71
72 /**
73 * Constructs a new set of tests.
74 *
75 * @param name the name of the tests.
76 */
77 public DefaultCategoryItemRendererTests(String name) {
78 super(name);
79 }
80
81 /**
82 * Check that the equals() method distinguishes all fields.
83 */
84 public void testEquals() {
85 DefaultCategoryItemRenderer r1 = new DefaultCategoryItemRenderer();
86 DefaultCategoryItemRenderer r2 = new DefaultCategoryItemRenderer();
87 assertEquals(r1, r2);
88 }
89
90 /**
91 * Two objects that are equal are required to return the same hashCode.
92 */
93 public void testHashcode() {
94 DefaultCategoryItemRenderer r1 = new DefaultCategoryItemRenderer();
95 DefaultCategoryItemRenderer r2 = new DefaultCategoryItemRenderer();
96 assertTrue(r1.equals(r2));
97 int h1 = r1.hashCode();
98 int h2 = r2.hashCode();
99 assertEquals(h1, h2);
100 }
101
102 /**
103 * Confirm that cloning works.
104 */
105 public void testCloning() {
106 DefaultCategoryItemRenderer r1 = new DefaultCategoryItemRenderer();
107 DefaultCategoryItemRenderer r2 = null;
108 try {
109 r2 = (DefaultCategoryItemRenderer) r1.clone();
110 }
111 catch (CloneNotSupportedException e) {
112 System.err.println("Failed to clone.");
113 }
114 assertTrue(r1 != r2);
115 assertTrue(r1.getClass() == r2.getClass());
116 assertTrue(r1.equals(r2));
117 }
118
119 /**
120 * Serialize an instance, restore it, and check for equality.
121 */
122 public void testSerialization() {
123
124 DefaultCategoryItemRenderer r1 = new DefaultCategoryItemRenderer();
125 DefaultCategoryItemRenderer r2 = null;
126
127 try {
128 ByteArrayOutputStream buffer = new ByteArrayOutputStream();
129 ObjectOutput out = new ObjectOutputStream(buffer);
130 out.writeObject(r1);
131 out.close();
132
133 ObjectInput in = new ObjectInputStream(
134 new ByteArrayInputStream(buffer.toByteArray())
135 );
136 r2 = (DefaultCategoryItemRenderer) in.readObject();
137 in.close();
138 }
139 catch (Exception e) {
140 System.out.println(e.toString());
141 }
142 assertEquals(r1, r2);
143
144 }
145
146 }
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