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Java > Open Source Codes > org > jfree > experimental > chart > renderer > xy > junit > XYBlockRendererTests


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  * XYBlockRendererTests.java
29  * -------------------------
30  * (C) Copyright 2006, by Object Refinery Limited and Contributors.
31  *
32  * Original Author: David Gilbert (for Object Refinery Limited);
33  * Contributor(s): -;
34  *
35  * $Id: XYBlockRendererTests.java,v 1.1.2.1 2006/10/12 10:58:43 mungady Exp $
36  *
37  * Changes
38  * -------
39  * 05-Jul-2006 : Version 1 (DG);
40  *
41  */

42
43 package org.jfree.experimental.chart.renderer.xy.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.experimental.chart.renderer.GrayPaintScale;
57 import org.jfree.experimental.chart.renderer.xy.XYBlockRenderer;
58
59 /**
60  * Tests for the {@link XYBlockRenderer} class.
61  */

62 public class XYBlockRendererTests extends TestCase {
63
64     /**
65      * Returns the tests as a test suite.
66      *
67      * @return The test suite.
68      */

69     public static Test suite() {
70         return new TestSuite(XYBlockRendererTests.class);
71     }
72
73     /**
74      * Constructs a new set of tests.
75      *
76      * @param name the name of the tests.
77      */

78     public XYBlockRendererTests(String JavaDoc name) {
79         super(name);
80     }
81
82     /**
83      * Test that the equals() method distinguishes all fields.
84      */

85     public void testEquals() {
86         
87         // default instances
88
XYBlockRenderer r1 = new XYBlockRenderer();
89         XYBlockRenderer r2 = new XYBlockRenderer();
90         assertTrue(r1.equals(r2));
91         assertTrue(r2.equals(r1));
92         
93         // blockHeight
94
r1.setBlockHeight(2.0);
95         assertFalse(r1.equals(r2));
96         r2.setBlockHeight(2.0);
97         assertTrue(r1.equals(r2));
98
99         // blockWidth
100
r1.setBlockWidth(2.0);
101         assertFalse(r1.equals(r2));
102         r2.setBlockWidth(2.0);
103         assertTrue(r1.equals(r2));
104         
105         // paintScale
106
r1.setPaintScale(new GrayPaintScale(0.0, 1.0));
107         assertFalse(r1.equals(r2));
108         r2.setPaintScale(new GrayPaintScale(0.0, 1.0));
109         assertTrue(r1.equals(r2));
110         
111     }
112
113     /**
114      * Two objects that are equal are required to return the same hashCode.
115      */

116     public void testHashcode() {
117         XYBlockRenderer r1 = new XYBlockRenderer();
118         XYBlockRenderer r2 = new XYBlockRenderer();
119         assertTrue(r1.equals(r2));
120         int h1 = r1.hashCode();
121         int h2 = r2.hashCode();
122         assertEquals(h1, h2);
123     }
124     
125     /**
126      * Confirm that cloning works.
127      */

128     public void testCloning() {
129         XYBlockRenderer r1 = new XYBlockRenderer();
130         XYBlockRenderer r2 = null;
131         try {
132             r2 = (XYBlockRenderer) r1.clone();
133         }
134         catch (CloneNotSupportedException JavaDoc e) {
135             e.printStackTrace();
136         }
137         assertTrue(r1 != r2);
138         assertTrue(r1.getClass() == r2.getClass());
139         assertTrue(r1.equals(r2));
140     }
141
142     /**
143      * Serialize an instance, restore it, and check for equality.
144      */

145     public void testSerialization() {
146         XYBlockRenderer r1 = new XYBlockRenderer();
147         XYBlockRenderer r2 = null;
148         try {
149             ByteArrayOutputStream JavaDoc buffer = new ByteArrayOutputStream JavaDoc();
150             ObjectOutput JavaDoc out = new ObjectOutputStream JavaDoc(buffer);
151             out.writeObject(r1);
152             out.close();
153
154             ObjectInput JavaDoc in = new ObjectInputStream JavaDoc(
155                     new ByteArrayInputStream JavaDoc(buffer.toByteArray()));
156             r2 = (XYBlockRenderer) in.readObject();
157             in.close();
158         }
159         catch (Exception JavaDoc e) {
160             e.printStackTrace();
161         }
162         assertEquals(r1, r2);
163     }
164
165 }
166
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