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Java > Open Source Codes > org > jfree > chart > renderer > xy > junit > XYAreaRendererTests


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  * AreaXYRendererTests.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: XYAreaRendererTests.java,v 1.1.2.1 2006/10/03 15:41:45 mungady Exp $
36  *
37  * Changes
38  * -------
39  * 25-Mar-2003 : Version 1 (DG);
40  * 22-Oct-2003 : Added hashCode test (DG);
41  *
42  */
43
44 package org.jfree.chart.renderer.xy.junit;
45
46 import java.awt.geom.Rectangle2D JavaDoc;
47 import java.io.ByteArrayInputStream JavaDoc;
48 import java.io.ByteArrayOutputStream JavaDoc;
49 import java.io.ObjectInput JavaDoc;
50 import java.io.ObjectInputStream JavaDoc;
51 import java.io.ObjectOutput JavaDoc;
52 import java.io.ObjectOutputStream JavaDoc;
53
54 import junit.framework.Test;
55 import junit.framework.TestCase;
56 import junit.framework.TestSuite;
57
58 import org.jfree.chart.JFreeChart;
59 import org.jfree.chart.axis.NumberAxis;
60 import org.jfree.chart.plot.XYPlot;
61 import org.jfree.chart.renderer.xy.XYAreaRenderer;
62 import org.jfree.data.xy.DefaultTableXYDataset;
63 import org.jfree.data.xy.XYSeries;
64
65 /**
66  * Tests for the {@link XYAreaRenderer} class.
67  */
68 public class XYAreaRendererTests extends TestCase {
69
70     /**
71      * Returns the tests as a test suite.
72      *
73      * @return The test suite.
74      */
75     public static Test suite() {
76         return new TestSuite(XYAreaRendererTests.class);
77     }
78
79     /**
80      * Constructs a new set of tests.
81      *
82      * @param name the name of the tests.
83      */
84     public XYAreaRendererTests(String JavaDoc name) {
85         super(name);
86     }
87
88     /**
89      * Check that the equals() method distinguishes all fields.
90      */
91     public void testEquals() {
92         XYAreaRenderer r1 = new XYAreaRenderer();
93         XYAreaRenderer r2 = new XYAreaRenderer();
94         assertEquals(r1, r2);
95         
96         r1 = new XYAreaRenderer(XYAreaRenderer.AREA_AND_SHAPES);
97         assertFalse(r1.equals(r2));
98         r2 = new XYAreaRenderer(XYAreaRenderer.AREA_AND_SHAPES);
99         assertTrue(r1.equals(r2));
100
101         r1 = new XYAreaRenderer(XYAreaRenderer.AREA);
102         assertFalse(r1.equals(r2));
103         r2 = new XYAreaRenderer(XYAreaRenderer.AREA);
104         assertTrue(r1.equals(r2));
105
106         r1 = new XYAreaRenderer(XYAreaRenderer.LINES);
107         assertFalse(r1.equals(r2));
108         r2 = new XYAreaRenderer(XYAreaRenderer.LINES);
109         assertTrue(r1.equals(r2));
110
111         r1 = new XYAreaRenderer(XYAreaRenderer.SHAPES);
112         assertFalse(r1.equals(r2));
113         r2 = new XYAreaRenderer(XYAreaRenderer.SHAPES);
114         assertTrue(r1.equals(r2));
115
116         r1 = new XYAreaRenderer(XYAreaRenderer.SHAPES_AND_LINES);
117         assertFalse(r1.equals(r2));
118         r2 = new XYAreaRenderer(XYAreaRenderer.SHAPES_AND_LINES);
119         assertTrue(r1.equals(r2));
120
121         r1.setOutline(true);
122         assertFalse(r1.equals(r2));
123         r2.setOutline(true);
124         assertTrue(r1.equals(r2));
125         
126         r1.setLegendArea(new Rectangle2D.Double JavaDoc(1.0, 2.0, 3.0, 4.0));
127         assertFalse(r1.equals(r2));
128         r2.setLegendArea(new Rectangle2D.Double JavaDoc(1.0, 2.0, 3.0, 4.0));
129         assertTrue(r1.equals(r2));
130     }
131
132     /**
133      * Two objects that are equal are required to return the same hashCode.
134      */
135     public void testHashcode() {
136         XYAreaRenderer r1 = new XYAreaRenderer();
137         XYAreaRenderer r2 = new XYAreaRenderer();
138         assertTrue(r1.equals(r2));
139         int h1 = r1.hashCode();
140         int h2 = r2.hashCode();
141         assertEquals(h1, h2);
142     }
143     
144     /**
145      * Confirm that cloning works.
146      */
147     public void testCloning() {
148         XYAreaRenderer r1 = new XYAreaRenderer();
149         XYAreaRenderer r2 = null;
150         try {
151             r2 = (XYAreaRenderer) r1.clone();
152         }
153         catch (CloneNotSupportedException JavaDoc e) {
154             System.err.println("Failed to clone.");
155         }
156         assertTrue(r1 != r2);
157         assertTrue(r1.getClass() == r2.getClass());
158         assertTrue(r1.equals(r2));
159     }
160
161     /**
162      * Serialize an instance, restore it, and check for equality.
163      */
164     public void testSerialization() {
165
166         XYAreaRenderer r1 = new XYAreaRenderer();
167         XYAreaRenderer r2 = null;
168
169         try {
170             ByteArrayOutputStream JavaDoc buffer = new ByteArrayOutputStream JavaDoc();
171             ObjectOutput JavaDoc out = new ObjectOutputStream JavaDoc(buffer);
172             out.writeObject(r1);
173             out.close();
174
175             ObjectInput JavaDoc in = new ObjectInputStream JavaDoc(
176                 new ByteArrayInputStream JavaDoc(buffer.toByteArray())
177             );
178             r2 = (XYAreaRenderer) in.readObject();
179             in.close();
180         }
181         catch (Exception JavaDoc e) {
182             System.out.println(e.toString());
183         }
184         assertEquals(r1, r2);
185
186     }
187
188     /**
189      * Draws the chart with a <code>null</code> info object to make sure that
190      * no exceptions are thrown (particularly by code in the renderer).
191      */
192     public void testDrawWithNullInfo() {
193         boolean success = false;
194         try {
195             DefaultTableXYDataset dataset = new DefaultTableXYDataset();
196         
197             XYSeries s1 = new XYSeries("Series 1", true, false);
198             s1.add(5.0, 5.0);
199             s1.add(10.0, 15.5);
200             s1.add(15.0, 9.5);
201             s1.add(20.0, 7.5);
202             dataset.addSeries(s1);
203         
204             XYSeries s2 = new XYSeries("Series 2", true, false);
205             s2.add(5.0, 5.0);
206             s2.add(10.0, 15.5);
207             s2.add(15.0, 9.5);
208             s2.add(20.0, 3.5);
209             dataset.addSeries(s2);
210             XYPlot plot = new XYPlot(dataset,
211                     new NumberAxis("X"), new NumberAxis("Y"),
212                     new XYAreaRenderer());
213             JFreeChart chart = new JFreeChart(plot);
214             /* BufferedImage image = */ chart.createBufferedImage(300, 200,
215                     null);
216             success = true;
217         }
218         catch (NullPointerException JavaDoc e) {
219             e.printStackTrace();
220             success = false;
221         }
222         assertTrue(success);
223     }
224
225 }
226
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