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


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  * StackedAreaRendererTests.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: StackedAreaRendererTests.java,v 1.4 2003/10/28 16:46:05 mungady Exp $
31  *
32  * Changes
33  * -------
34  * 25-Mar-2003 : Version 1 (DG);
35  *
36  */
37
38 package org.jfree.chart.renderer.junit;
39
40 import java.io.ByteArrayInputStream JavaDoc;
41 import java.io.ByteArrayOutputStream JavaDoc;
42 import java.io.ObjectInput JavaDoc;
43 import java.io.ObjectInputStream JavaDoc;
44 import java.io.ObjectOutput JavaDoc;
45 import java.io.ObjectOutputStream JavaDoc;
46
47 import junit.framework.Test;
48 import junit.framework.TestCase;
49 import junit.framework.TestSuite;
50
51 import org.jfree.chart.renderer.StackedAreaRenderer;
52
53 /**
54  * Tests for the {@link StackedAreaRendererTests} class.
55  *
56  * @author David Gilbert
57  */
58 public class StackedAreaRendererTests extends TestCase {
59
60     /**
61      * Returns the tests as a test suite.
62      *
63      * @return the test suite.
64      */
65     public static Test suite() {
66         return new TestSuite(StackedAreaRendererTests.class);
67     }
68
69     /**
70      * Constructs a new set of tests.
71      *
72      * @param name the name of the tests.
73      */
74     public StackedAreaRendererTests(String JavaDoc name) {
75         super(name);
76     }
77
78     /**
79      * Test that the equals(...) method distinguishes all fields.
80      */
81     public void testEquals() {
82         StackedAreaRenderer r1 = new StackedAreaRenderer();
83         StackedAreaRenderer r2 = new StackedAreaRenderer();
84         assertEquals(r1, r2);
85     }
86
87     /**
88      * Two objects that are equal are required to return the same hashCode.
89      */
90     public void testHashcode() {
91         StackedAreaRenderer r1 = new StackedAreaRenderer();
92         StackedAreaRenderer r2 = new StackedAreaRenderer();
93         assertTrue(r1.equals(r2));
94         int h1 = r1.hashCode();
95         int h2 = r2.hashCode();
96         assertEquals(h1, h2);
97     }
98     
99     /**
100      * Confirm that cloning works.
101      */
102     public void testCloning() {
103         StackedAreaRenderer r1 = new StackedAreaRenderer();
104         StackedAreaRenderer r2 = null;
105         try {
106             r2 = (StackedAreaRenderer) r1.clone();
107         }
108         catch (CloneNotSupportedException JavaDoc e) {
109             System.err.println("StackedAreaRendererTests.testCloning: failed to clone.");
110         }
111         assertTrue(r1 != r2);
112         assertTrue(r1.getClass() == r2.getClass());
113         assertTrue(r1.equals(r2));
114         
115     }
116
117     /**
118      * Serialize an instance, restore it, and check for equality.
119      */
120     public void testSerialization() {
121
122         StackedAreaRenderer r1 = new StackedAreaRenderer();
123         StackedAreaRenderer r2 = null;
124
125         try {
126             ByteArrayOutputStream JavaDoc buffer = new ByteArrayOutputStream JavaDoc();
127             ObjectOutput JavaDoc out = new ObjectOutputStream JavaDoc(buffer);
128             out.writeObject(r1);
129             out.close();
130
131             ObjectInput JavaDoc in = new ObjectInputStream JavaDoc(new ByteArrayInputStream JavaDoc(buffer.toByteArray()));
132             r2 = (StackedAreaRenderer) in.readObject();
133             in.close();
134         }
135         catch (Exception JavaDoc e) {
136             System.out.println(e.toString());
137         }
138         assertEquals(r1, r2);
139
140     }
141
142 }
143
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