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


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  * StatisticalBarRendererTests.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: StatisticalBarRendererTests.java,v 1.2 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.StatisticalBarRenderer;
52
53 /**
54  * Tests for the {@link StatisticalBarRenderer} class.
55  *
56  * @author David Gilbert
57  */
58 public class StatisticalBarRendererTests 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(StatisticalBarRendererTests.class);
67     }
68
69     /**
70      * Constructs a new set of tests.
71      *
72      * @param name the name of the tests.
73      */
74     public StatisticalBarRendererTests(String JavaDoc name) {
75         super(name);
76     }
77
78     /**
79      * Test that the equals(...) method distinguishes all fields.
80      */
81     public void testEquals() {
82         StatisticalBarRenderer r1 = new StatisticalBarRenderer();
83         StatisticalBarRenderer r2 = new StatisticalBarRenderer();
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         StatisticalBarRenderer r1 = new StatisticalBarRenderer();
92         StatisticalBarRenderer r2 = new StatisticalBarRenderer();
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         StatisticalBarRenderer r1 = new StatisticalBarRenderer();
104         StatisticalBarRenderer r2 = null;
105         try {
106             r2 = (StatisticalBarRenderer) r1.clone();
107         }
108         catch (CloneNotSupportedException JavaDoc e) {
109             System.err.println("StackedBarRendererTests.testCloning: failed to clone.");
110         }
111         assertTrue(r1 != r2);
112         assertTrue(r1.getClass() == r2.getClass());
113         assertTrue(r1.equals(r2));
114     }
115
116     /**
117      * Serialize an instance, restore it, and check for equality.
118      */
119     public void testSerialization() {
120
121         StatisticalBarRenderer r1 = new StatisticalBarRenderer();
122         StatisticalBarRenderer r2 = null;
123
124         try {
125             ByteArrayOutputStream JavaDoc buffer = new ByteArrayOutputStream JavaDoc();
126             ObjectOutput JavaDoc out = new ObjectOutputStream JavaDoc(buffer);
127             out.writeObject(r1);
128             out.close();
129
130             ObjectInput JavaDoc in = new ObjectInputStream JavaDoc(new ByteArrayInputStream JavaDoc(buffer.toByteArray()));
131             r2 = (StatisticalBarRenderer) in.readObject();
132             in.close();
133         }
134         catch (Exception JavaDoc e) {
135             System.out.println(e.toString());
136         }
137         assertEquals(r1, r2);
138
139     }
140
141 }
142
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