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Java > Open Source Codes > org > jfree > chart > needle > junit > PointerNeedleTests


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  * PointerNeedleTests.java
29  * -----------------------
30  * (C) Copyright 2005, by Object Refinery Limited and Contributors.
31  *
32  * Original Author: David Gilbert (for Object Refinery Limited);
33  * Contributor(s): -;
34  *
35  * $Id: PointerNeedleTests.java,v 1.1.2.1 2006/10/03 15:41:47 mungady Exp $
36  *
37  * Changes
38  * -------
39  * 08-Jun-2005 : Version 1 (DG);
40  *
41  */
42
43 package org.jfree.chart.needle.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.chart.needle.PointerNeedle;
57
58 /**
59  * Tests for the {@link PointerNeedle} class.
60  */
61 public class PointerNeedleTests extends TestCase {
62     /**
63      * Returns the tests as a test suite.
64      *
65      * @return The test suite.
66      */
67     public static Test suite() {
68         return new TestSuite(PointerNeedleTests.class);
69     }
70
71     /**
72      * Constructs a new set of tests.
73      *
74      * @param name the name of the tests.
75      */
76     public PointerNeedleTests(String JavaDoc name) {
77         super(name);
78     }
79
80     /**
81      * Check that the equals() method can distinguish all fields.
82      */
83     public void testEquals() {
84        PointerNeedle n1 = new PointerNeedle();
85        PointerNeedle n2 = new PointerNeedle();
86        assertTrue(n1.equals(n2));
87        assertTrue(n2.equals(n1));
88     }
89
90     /**
91      * Check that cloning works.
92      */
93     public void testCloning() {
94         PointerNeedle n1 = new PointerNeedle();
95         PointerNeedle n2 = null;
96         try {
97             n2 = (PointerNeedle) n1.clone();
98         }
99         catch (CloneNotSupportedException JavaDoc e) {
100             e.printStackTrace();
101             System.err.println("Failed to clone.");
102         }
103         assertTrue(n1 != n2);
104         assertTrue(n1.getClass() == n2.getClass());
105         assertTrue(n1.equals(n2));
106     }
107
108     /**
109      * Serialize an instance, restore it, and check for equality.
110      */
111     public void testSerialization() {
112         PointerNeedle n1 = new PointerNeedle();
113         PointerNeedle n2 = null;
114         try {
115             ByteArrayOutputStream JavaDoc buffer = new ByteArrayOutputStream JavaDoc();
116             ObjectOutput JavaDoc out = new ObjectOutputStream JavaDoc(buffer);
117             out.writeObject(n1);
118             out.close();
119             ObjectInput JavaDoc in = new ObjectInputStream JavaDoc(
120                 new ByteArrayInputStream JavaDoc(buffer.toByteArray())
121             );
122             n2 = (PointerNeedle) in.readObject();
123             in.close();
124         }
125         catch (Exception JavaDoc e) {
126             e.printStackTrace();
127         }
128         assertTrue(n1.equals(n2));
129     }
130
131 }
132
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