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Java > Open Source Codes > org > jfree > data > junit > DomainOrderTests


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  * DomainOrderTests.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: DomainOrderTests.java,v 1.1.2.1 2006/10/03 15:41:42 mungady Exp $
36  *
37  * Changes
38  * -------
39  * 19-May-2005 : Version 1 (DG);
40  *
41  */
42
43 package org.jfree.data.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.DomainOrder;
57
58 /**
59  * Tests for the {@link DomainOrder} class.
60  */
61 public class DomainOrderTests 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(DomainOrderTests.class);
70     }
71
72     /**
73      * Constructs a new set of tests.
74      *
75      * @param name the name of the tests.
76      */
77     public DomainOrderTests(String JavaDoc name) {
78         super(name);
79     }
80     
81     /**
82      * Some checks for the equals() method.
83      */
84     public void testEquals() {
85         assertEquals(DomainOrder.NONE, DomainOrder.NONE);
86         assertEquals(DomainOrder.ASCENDING, DomainOrder.ASCENDING);
87         assertEquals(DomainOrder.DESCENDING, DomainOrder.DESCENDING);
88         assertFalse(DomainOrder.NONE.equals(DomainOrder.ASCENDING));
89         assertFalse(DomainOrder.NONE.equals(DomainOrder.DESCENDING));
90         assertFalse(DomainOrder.NONE.equals(null));
91         assertFalse(DomainOrder.ASCENDING.equals(DomainOrder.NONE));
92         assertFalse(DomainOrder.ASCENDING.equals(DomainOrder.DESCENDING));
93         assertFalse(DomainOrder.ASCENDING.equals(null));
94         assertFalse(DomainOrder.DESCENDING.equals(DomainOrder.NONE));
95         assertFalse(DomainOrder.DESCENDING.equals(DomainOrder.ASCENDING));
96         assertFalse(DomainOrder.DESCENDING.equals(null));
97     }
98     
99     /**
100      * Two objects that are equal are required to return the same hashCode.
101      */
102     public void testHashCode() {
103         DomainOrder d1 = DomainOrder.ASCENDING;
104         DomainOrder d2 = DomainOrder.ASCENDING;
105         assertTrue(d1.equals(d2));
106         int h1 = d1.hashCode();
107         int h2 = d2.hashCode();
108         assertEquals(h1, h2);
109     }
110     
111     /**
112      * Serialize an instance, restore it, and check for equality.
113      */
114     public void testSerialization() {
115         DomainOrder d1 = DomainOrder.ASCENDING;
116         DomainOrder d2 = null;
117         try {
118             ByteArrayOutputStream JavaDoc buffer = new ByteArrayOutputStream JavaDoc();
119             ObjectOutput JavaDoc out = new ObjectOutputStream JavaDoc(buffer);
120             out.writeObject(d1);
121             out.close();
122
123             ObjectInput JavaDoc in = new ObjectInputStream JavaDoc(
124                 new ByteArrayInputStream JavaDoc(buffer.toByteArray())
125             );
126             d2 = (DomainOrder) in.readObject();
127             in.close();
128         }
129         catch (Exception JavaDoc e) {
130             System.out.println(e.toString());
131         }
132         assertEquals(d1, d2);
133         boolean same = d1 == d2;
134         assertEquals(true, same);
135     }
136
137 }
138
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