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Java > Open Source Codes > org > jfree > chart > axis > junit > CategoryAnchorTests


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  * CategoryAnchorTests.java
29  * ------------------------
30  * (C) Copyright 2004, 2005, by Object Refinery Limited and Contributors.
31  *
32  * Original Author: David Gilbert (for Object Refinery Limited);
33  * Contributor(s): -;
34  *
35  * $Id: CategoryAnchorTests.java,v 1.1.2.1 2006/10/03 15:41:23 mungady Exp $
36  *
37  * Changes
38  * -------
39  * 13-May-2004 : Version 1 (DG);
40  * 07-Jan-2005 : Added hashCode() test (DG);
41  *
42  */
43
44 package org.jfree.chart.axis.junit;
45
46 import java.io.ByteArrayInputStream JavaDoc;
47 import java.io.ByteArrayOutputStream JavaDoc;
48 import java.io.ObjectInput JavaDoc;
49 import java.io.ObjectInputStream JavaDoc;
50 import java.io.ObjectOutput JavaDoc;
51 import java.io.ObjectOutputStream JavaDoc;
52
53 import junit.framework.Test;
54 import junit.framework.TestCase;
55 import junit.framework.TestSuite;
56
57 import org.jfree.chart.axis.CategoryAnchor;
58
59 /**
60  * Tests for the {@link CategoryAnchor} class.
61  */
62 public class CategoryAnchorTests 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(CategoryAnchorTests.class);
71     }
72
73     /**
74      * Constructs a new set of tests.
75      *
76      * @param name the name of the tests.
77      */
78     public CategoryAnchorTests(String JavaDoc name) {
79         super(name);
80     }
81     
82     /**
83      * Check that the equals() method distinguishes known instances.
84      */
85     public void testEquals() {
86         assertEquals(CategoryAnchor.START, CategoryAnchor.START);
87         assertEquals(CategoryAnchor.MIDDLE, CategoryAnchor.MIDDLE);
88         assertEquals(CategoryAnchor.END, CategoryAnchor.END);
89         assertFalse(CategoryAnchor.START.equals(CategoryAnchor.END));
90         assertFalse(CategoryAnchor.MIDDLE.equals(CategoryAnchor.END));
91     }
92     
93     /**
94      * Two objects that are equal are required to return the same hashCode.
95      */
96     public void testHashCode() {
97         CategoryAnchor a1 = CategoryAnchor.START;
98         CategoryAnchor a2 = CategoryAnchor.START;
99         assertTrue(a1.equals(a2));
100         int h1 = a1.hashCode();
101         int h2 = a2.hashCode();
102         assertEquals(h1, h2);
103     }
104
105     /**
106      * Serialize an instance, restore it, and check for equality.
107      */
108     public void testSerialization() {
109         CategoryAnchor a1 = CategoryAnchor.MIDDLE;
110         CategoryAnchor a2 = null;
111
112         try {
113             ByteArrayOutputStream JavaDoc buffer = new ByteArrayOutputStream JavaDoc();
114             ObjectOutput JavaDoc out = new ObjectOutputStream JavaDoc(buffer);
115             out.writeObject(a1);
116             out.close();
117
118             ObjectInput JavaDoc in = new ObjectInputStream JavaDoc(
119                 new ByteArrayInputStream JavaDoc(buffer.toByteArray())
120             );
121             a2 = (CategoryAnchor) in.readObject();
122             in.close();
123         }
124         catch (Exception JavaDoc e) {
125             System.out.println(e.toString());
126         }
127         assertEquals(a1, a2);
128         assertTrue(a1 == a2);
129     }
130
131 }
132
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