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


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  * HighLowRendererTests.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: HighLowRendererTests.java,v 1.5 2003/10/28 16:46:05 mungady Exp $
31  *
32  * Changes
33  * -------
34  * 25-Mar-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.HighLowRenderer;
53
54 /**
55  * Tests for the {@link HighLowRenderer} class.
56  *
57  * @author David Gilbert
58  */
59 public class HighLowRendererTests 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(HighLowRendererTests.class);
68     }
69
70     /**
71      * Constructs a new set of tests.
72      *
73      * @param name the name of the tests.
74      */
75     public HighLowRendererTests(String JavaDoc name) {
76         super(name);
77     }
78
79     /**
80      * Test that the equals(...) method distinguishes all fields.
81      */
82     public void testEquals() {
83         HighLowRenderer r1 = new HighLowRenderer();
84         HighLowRenderer r2 = new HighLowRenderer();
85         assertEquals(r1, r2);
86     }
87
88     /**
89      * Two objects that are equal are required to return the same hashCode.
90      */
91     public void testHashcode() {
92         HighLowRenderer r1 = new HighLowRenderer();
93         HighLowRenderer r2 = new HighLowRenderer();
94         assertTrue(r1.equals(r2));
95         int h1 = r1.hashCode();
96         int h2 = r2.hashCode();
97         assertEquals(h1, h2);
98     }
99     
100     /**
101      * Confirm that cloning works.
102      */
103     public void testCloning() {
104         HighLowRenderer r1 = new HighLowRenderer();
105         HighLowRenderer r2 = null;
106         try {
107             r2 = (HighLowRenderer) r1.clone();
108         }
109         catch (CloneNotSupportedException JavaDoc e) {
110             System.err.println("HighLowRendererTests.testCloning: failed to clone.");
111         }
112         assertTrue(r1 != r2);
113         assertTrue(r1.getClass() == r2.getClass());
114         assertTrue(r1.equals(r2));
115     }
116
117     /**
118      * Serialize an instance, restore it, and check for equality.
119      */
120     public void testSerialization() {
121
122         HighLowRenderer r1 = new HighLowRenderer();
123         HighLowRenderer 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 = (HighLowRenderer) 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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