KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > org > jfree > chart > renderer > junit > DefaultCategoryItemRendererTests


1 /* ======================================
2  * JFreeChart : a free Java chart library
3  * ======================================
4  *
5  * Project Info: http://www.jfree.org/jfreechart/index.html
6  * Project Lead: David Gilbert (david.gilbert@object-refinery.com);
7  *
8  * (C) Copyright 2000-2003, by Object Refinery Limited and Contributors.
9  *
10  * This library is free software; you can redistribute it and/or modify it under the terms
11  * of the GNU Lesser General Public License as published by the Free Software Foundation;
12  * either version 2.1 of the License, or (at your option) any later version.
13  *
14  * This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
15  * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
16  * See the GNU Lesser General Public License for more details.
17  *
18  * You should have received a copy of the GNU Lesser General Public License along with this
19  * library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
20  * Boston, MA 02111-1307, USA.
21  *
22  * -------------------------------------
23  * DefaultCategoryItemRendererTests.java
24  * -------------------------------------
25  * (C) Copyright 2003 by Object Refinery Limited and Contributors.
26  *
27  * Original Author: David Gilbert (for Object Refinery Limited);
28  * Contributor(s): -;
29  *
30  * $Id: DefaultCategoryItemRendererTests.java,v 1.7 2003/10/28 16:46:05 mungady Exp $
31  *
32  * Changes
33  * -------
34  * 29-Apr-2003 : Version 1 (DG);
35  * 22-Oct-2003 : Added hashCode test (DG);
36  *
37  */
38
39 package org.jfree.chart.renderer.junit;
40
41 import java.io.ByteArrayInputStream JavaDoc;
42 import java.io.ByteArrayOutputStream JavaDoc;
43 import java.io.ObjectInput JavaDoc;
44 import java.io.ObjectInputStream JavaDoc;
45 import java.io.ObjectOutput JavaDoc;
46 import java.io.ObjectOutputStream JavaDoc;
47
48 import junit.framework.Test;
49 import junit.framework.TestCase;
50 import junit.framework.TestSuite;
51
52 import org.jfree.chart.renderer.DefaultCategoryItemRenderer;
53
54 /**
55  * Tests for the {@link DefaultCategoryItemRenderer} class.
56  *
57  * @author David Gilbert
58  */
59 public class DefaultCategoryItemRendererTests extends TestCase {
60
61     /**
62      * Returns the tests as a test suite.
63      *
64      * @return the test suite.
65      */
66     public static Test suite() {
67         return new TestSuite(DefaultCategoryItemRendererTests.class);
68     }
69
70     /**
71      * Constructs a new set of tests.
72      *
73      * @param name the name of the tests.
74      */
75     public DefaultCategoryItemRendererTests(String JavaDoc name) {
76         super(name);
77     }
78
79     /**
80      * Test that the equals(...) method distinguishes all fields.
81      */
82     public void testEquals() {
83         DefaultCategoryItemRenderer r1 = new DefaultCategoryItemRenderer();
84         DefaultCategoryItemRenderer r2 = new DefaultCategoryItemRenderer();
85         assertEquals(r1, r2);
86
87     }
88
89     /**
90      * Two objects that are equal are required to return the same hashCode.
91      */
92     public void testHashcode() {
93         DefaultCategoryItemRenderer r1 = new DefaultCategoryItemRenderer();
94         DefaultCategoryItemRenderer r2 = new DefaultCategoryItemRenderer();
95         assertTrue(r1.equals(r2));
96         int h1 = r1.hashCode();
97         int h2 = r2.hashCode();
98         assertEquals(h1, h2);
99     }
100     
101     /**
102      * Confirm that cloning works.
103      */
104     public void testCloning() {
105         DefaultCategoryItemRenderer r1 = new DefaultCategoryItemRenderer();
106         DefaultCategoryItemRenderer r2 = null;
107         try {
108             r2 = (DefaultCategoryItemRenderer) r1.clone();
109         }
110         catch (CloneNotSupportedException JavaDoc e) {
111             System.err.println("DefaultCategoryItemRendererTests.testCloning: failed to clone.");
112         }
113         assertTrue(r1 != r2);
114         assertTrue(r1.getClass() == r2.getClass());
115         assertTrue(r1.equals(r2));
116     }
117   
118     /**
119      * Serialize an instance, restore it, and check for equality.
120      */
121     public void testSerialization() {
122
123         DefaultCategoryItemRenderer r1 = new DefaultCategoryItemRenderer();
124         DefaultCategoryItemRenderer r2 = null;
125
126         try {
127             ByteArrayOutputStream JavaDoc buffer = new ByteArrayOutputStream JavaDoc();
128             ObjectOutput JavaDoc out = new ObjectOutputStream JavaDoc(buffer);
129             out.writeObject(r1);
130             out.close();
131
132             ObjectInput JavaDoc in = new ObjectInputStream JavaDoc(new ByteArrayInputStream JavaDoc(buffer.toByteArray()));
133             r2 = (DefaultCategoryItemRenderer) in.readObject();
134             in.close();
135         }
136         catch (Exception JavaDoc e) {
137             System.out.println(e.toString());
138         }
139         assertEquals(r1, r2);
140
141     }
142
143 }
144
Popular Tags