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


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  * AreaRendererTests.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: AreaRendererTests.java,v 1.1.2.2 2006/10/11 10:25:51 mungady Exp $
36  *
37  * Changes
38  * -------
39  * 25-Mar-2003 : Version 1 (DG);
40  * 22-Oct-2003 : Added hashCode() test (DG);
41  * 11-Oct-2006 : Strengthened the testEquals() method (DG);
42  *
43  */
44
45 package org.jfree.chart.renderer.category.junit;
46
47 import java.io.ByteArrayInputStream JavaDoc;
48 import java.io.ByteArrayOutputStream JavaDoc;
49 import java.io.ObjectInput JavaDoc;
50 import java.io.ObjectInputStream JavaDoc;
51 import java.io.ObjectOutput JavaDoc;
52 import java.io.ObjectOutputStream JavaDoc;
53
54 import junit.framework.Test;
55 import junit.framework.TestCase;
56 import junit.framework.TestSuite;
57 import org.jfree.chart.renderer.AreaRendererEndType;
58
59 import org.jfree.chart.renderer.category.AreaRenderer;
60
61 /**
62  * Tests for the {@link AreaRenderer} class.
63  */
64 public class AreaRendererTests extends TestCase {
65
66     /**
67      * Returns the tests as a test suite.
68      *
69      * @return The test suite.
70      */
71     public static Test suite() {
72         return new TestSuite(AreaRendererTests.class);
73     }
74
75     /**
76      * Constructs a new set of tests.
77      *
78      * @param name the name of the tests.
79      */
80     public AreaRendererTests(String JavaDoc name) {
81         super(name);
82     }
83
84     /**
85      * Check that the equals() method distinguishes all fields.
86      */
87     public void testEquals() {
88         AreaRenderer r1 = new AreaRenderer();
89         AreaRenderer r2 = new AreaRenderer();
90         assertEquals(r1, r2);
91         
92         r1.setEndType(AreaRendererEndType.LEVEL);
93         assertFalse(r1.equals(r2));
94         r2.setEndType(AreaRendererEndType.LEVEL);
95         assertTrue(r1.equals(r2));
96     }
97
98     /**
99      * Two objects that are equal are required to return the same hashCode.
100      */
101     public void testHashcode() {
102         AreaRenderer r1 = new AreaRenderer();
103         AreaRenderer r2 = new AreaRenderer();
104         assertTrue(r1.equals(r2));
105         int h1 = r1.hashCode();
106         int h2 = r2.hashCode();
107         assertEquals(h1, h2);
108     }
109     
110     /**
111      * Confirm that cloning works.
112      */
113     public void testCloning() {
114         AreaRenderer r1 = new AreaRenderer();
115         AreaRenderer r2 = null;
116         try {
117             r2 = (AreaRenderer) r1.clone();
118         }
119         catch (CloneNotSupportedException JavaDoc e) {
120             e.printStackTrace();
121         }
122         assertTrue(r1 != r2);
123         assertTrue(r1.getClass() == r2.getClass());
124         assertTrue(r1.equals(r2));
125     }
126
127     /**
128      * Serialize an instance, restore it, and check for equality.
129      */
130     public void testSerialization() {
131         AreaRenderer r1 = new AreaRenderer();
132         AreaRenderer r2 = null;
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             r2 = (AreaRenderer) in.readObject();
142             in.close();
143         }
144         catch (Exception JavaDoc e) {
145             e.printStackTrace();
146         }
147         assertEquals(r1, r2);
148     }
149     
150 }
151
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