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Java > Open Source Codes > org > jfree > chart > renderer > category > junit > StackedBarRendererTests


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  * StackedBarRendererTests.java
29  * ----------------------------
30  * (C) Copyright 2003-2005, by Object Refinery Limited and Contributors.
31  *
32  * Original Author: David Gilbert (for Object Refinery Limited);
33  * Contributor(s): -;
34  *
35  * $Id: StackedBarRendererTests.java,v 1.1.2.1 2006/10/03 15:41:35 mungady Exp $
36  *
37  * Changes
38  * -------
39  * 25-Mar-2003 : Version 1 (DG);
40  *
41  */
42
43 package org.jfree.chart.renderer.category.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.category.StackedBarRenderer;
57
58 /**
59  * Tests for the {@link StackedBarRenderer} class.
60  */
61 public class StackedBarRendererTests 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(StackedBarRendererTests.class);
70     }
71
72     /**
73      * Constructs a new set of tests.
74      *
75      * @param name the name of the tests.
76      */
77     public StackedBarRendererTests(String JavaDoc name) {
78         super(name);
79     }
80
81     /**
82      * Check that the equals() method distinguishes all fields.
83      */
84     public void testEquals() {
85         StackedBarRenderer r1 = new StackedBarRenderer();
86         StackedBarRenderer r2 = new StackedBarRenderer();
87         assertTrue(r1.equals(r2));
88         assertTrue(r2.equals(r1));
89         
90         r1.setRenderAsPercentages(true);
91         assertFalse(r1.equals(r2));
92         r2.setRenderAsPercentages(true);
93         assertTrue(r1.equals(r2));
94     }
95
96     /**
97      * Two objects that are equal are required to return the same hashCode.
98      */
99     public void testHashCode() {
100         StackedBarRenderer r1 = new StackedBarRenderer();
101         StackedBarRenderer r2 = new StackedBarRenderer();
102         assertTrue(r1.equals(r2));
103         int h1 = r1.hashCode();
104         int h2 = r2.hashCode();
105         assertEquals(h1, h2);
106     }
107     
108     /**
109      * Confirm that cloning works.
110      */
111     public void testCloning() {
112         StackedBarRenderer r1 = new StackedBarRenderer();
113         StackedBarRenderer r2 = null;
114         try {
115             r2 = (StackedBarRenderer) r1.clone();
116         }
117         catch (CloneNotSupportedException JavaDoc e) {
118             System.err.println("Failed to clone.");
119         }
120         assertTrue(r1 != r2);
121         assertTrue(r1.getClass() == r2.getClass());
122         assertTrue(r1.equals(r2));
123     }
124
125     /**
126      * Serialize an instance, restore it, and check for equality.
127      */
128     public void testSerialization() {
129
130         StackedBarRenderer r1 = new StackedBarRenderer();
131         StackedBarRenderer r2 = null;
132
133         try {
134             ByteArrayOutputStream JavaDoc buffer = new ByteArrayOutputStream JavaDoc();
135             ObjectOutput JavaDoc out = new ObjectOutputStream JavaDoc(buffer);
136             out.writeObject(r1);
137             out.close();
138
139             ObjectInput JavaDoc in = new ObjectInputStream JavaDoc(
140                 new ByteArrayInputStream JavaDoc(buffer.toByteArray())
141             );
142             r2 = (StackedBarRenderer) in.readObject();
143             in.close();
144         }
145         catch (Exception JavaDoc e) {
146             System.out.println(e.toString());
147         }
148         assertEquals(r1, r2);
149
150     }
151
152 }
153
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