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Java > Open Source Codes > org > jfree > chart > block > junit > EmptyBlockTests


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  * BlockContainerTests.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: EmptyBlockTests.java,v 1.1.2.1 2006/10/03 15:41:44 mungady Exp $
36  *
37  * Changes
38  * -------
39  * 04-Feb-2005 : Version 1 (DG);
40  *
41  */
42
43 package org.jfree.chart.block.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.block.EmptyBlock;
57
58 /**
59  * Tests for the {@link EmptyBlock} class.
60  */
61 public class EmptyBlockTests 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(EmptyBlockTests.class);
70     }
71
72     /**
73      * Constructs a new set of tests.
74      *
75      * @param name the name of the tests.
76      */
77     public EmptyBlockTests(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         EmptyBlock b1 = new EmptyBlock(1.0, 2.0);
86         EmptyBlock b2 = new EmptyBlock(1.0, 2.0);
87         assertTrue(b1.equals(b2));
88         assertTrue(b2.equals(b2));
89         
90         b1 = new EmptyBlock(1.1, 2.0);
91         assertFalse(b1.equals(b2));
92         b2 = new EmptyBlock(1.1, 2.0);
93         assertTrue(b1.equals(b2));
94
95         b1 = new EmptyBlock(1.1, 2.2);
96         assertFalse(b1.equals(b2));
97         b2 = new EmptyBlock(1.1, 2.2);
98         assertTrue(b1.equals(b2));
99     }
100
101     /**
102      * Confirm that cloning works.
103      */
104     public void testCloning() {
105         EmptyBlock b1 = new EmptyBlock(1.0, 2.0);
106         EmptyBlock b2 = null;
107         
108         try {
109             b2 = (EmptyBlock) b1.clone();
110         }
111         catch (CloneNotSupportedException JavaDoc e) {
112             fail(e.toString());
113         }
114         assertTrue(b1 != b2);
115         assertTrue(b1.getClass() == b2.getClass());
116         assertTrue(b1.equals(b2));
117     }
118
119     /**
120      * Serialize an instance, restore it, and check for equality.
121      */
122     public void testSerialization() {
123         EmptyBlock b1 = new EmptyBlock(1.0, 2.0);
124         EmptyBlock b2 = null;
125         try {
126             ByteArrayOutputStream JavaDoc buffer = new ByteArrayOutputStream JavaDoc();
127             ObjectOutput JavaDoc out = new ObjectOutputStream JavaDoc(buffer);
128             out.writeObject(b1);
129             out.close();
130
131             ObjectInput JavaDoc in = new ObjectInputStream JavaDoc(
132                 new ByteArrayInputStream JavaDoc(buffer.toByteArray())
133             );
134             b2 = (EmptyBlock) in.readObject();
135             in.close();
136         }
137         catch (Exception JavaDoc e) {
138             fail(e.toString());
139         }
140         assertEquals(b1, b2);
141     }
142    
143 }
144
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