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Java > Open Source Codes > org > jfree > data > xy > junit > XYDataItemTests


1 /* ===========================================================
2  * JFreeChart : a free chart library for the Java(tm) platform
3  * ===========================================================
4  *
5  * (C) Copyright 2000-2005, 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  * XYDataItemTests.java
29  * --------------------
30  * (C) Copyright 2003-2005, by Object Refinery Limited and Contributors.
31  *
32  * Original Author: David Gilbert (for Object Refinery Limited);
33  * Contributor(s): -;
34  *
35  * $Id: XYDataItemTests.java,v 1.1.2.1 2006/10/03 15:41:38 mungady Exp $
36  *
37  * Changes
38  * -------
39  * 23-Dec-2003 : Version 1 (DG);
40  *
41  */
42
43 package org.jfree.data.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.data.xy.XYDataItem;
57
58 /**
59  * Tests for the {@link XYDataItem} class.
60  */
61 public class XYDataItemTests extends TestCase {
62
63     /**
64      * Returns the tests as a test suite.
65      *
66      * @return The test suite.
67      */
68     public static Test suite() {
69         return new TestSuite(XYDataItemTests.class);
70     }
71
72     /**
73      * Constructs a new set of tests.
74      *
75      * @param name the name of the tests.
76      */
77     public XYDataItemTests(String JavaDoc name) {
78         super(name);
79     }
80
81     /**
82      * Confirm that the equals method can distinguish all the required fields.
83      */
84     public void testEquals() {
85         
86         XYDataItem i1 = new XYDataItem(1.0, 1.1);
87         XYDataItem i2 = new XYDataItem(1.0, 1.1);
88         assertTrue(i1.equals(i2));
89         assertTrue(i2.equals(i1));
90
91         i1.setY(new Double JavaDoc(9.9));
92         assertFalse(i1.equals(i2));
93
94         i2.setY(new Double JavaDoc(9.9));
95         assertTrue(i1.equals(i2));
96
97     }
98
99     /**
100      * Confirm that cloning works.
101      */
102     public void testCloning() {
103         XYDataItem i1 = new XYDataItem(1.0, 1.1);
104         XYDataItem i2 = null;
105         try {
106             i2 = (XYDataItem) i1.clone();
107         }
108         catch (CloneNotSupportedException JavaDoc e) {
109             System.err.println("XYDataItemTests.testCloning: failed to clone.");
110         }
111         assertTrue(i1 != i2);
112         assertTrue(i1.getClass() == i2.getClass());
113         assertTrue(i1.equals(i2));
114     }
115
116     /**
117      * Serialize an instance, restore it, and check for equality.
118      */
119     public void testSerialization() {
120
121         XYDataItem i1 = new XYDataItem(1.0, 1.1);
122         XYDataItem i2 = null;
123         
124         try {
125             ByteArrayOutputStream JavaDoc buffer = new ByteArrayOutputStream JavaDoc();
126             ObjectOutput JavaDoc out = new ObjectOutputStream JavaDoc(buffer);
127             out.writeObject(i1);
128             out.close();
129
130             ObjectInput JavaDoc in = new ObjectInputStream JavaDoc(
131                 new ByteArrayInputStream JavaDoc(buffer.toByteArray())
132             );
133             i2 = (XYDataItem) in.readObject();
134             in.close();
135         }
136         catch (Exception JavaDoc e) {
137             System.out.println(e.toString());
138         }
139         assertEquals(i1, i2);
140
141     }
142
143 }
144
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