001: /* ===========================================================
002: * JFreeChart : a free chart library for the Java(tm) platform
003: * ===========================================================
004: *
005: * (C) Copyright 2000-2006, by Object Refinery Limited and Contributors.
006: *
007: * Project Info: http://www.jfree.org/jfreechart/index.html
008: *
009: * This library is free software; you can redistribute it and/or modify it
010: * under the terms of the GNU Lesser General Public License as published by
011: * the Free Software Foundation; either version 2.1 of the License, or
012: * (at your option) any later version.
013: *
014: * This library is distributed in the hope that it will be useful, but
015: * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
016: * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
017: * License for more details.
018: *
019: * You should have received a copy of the GNU Lesser General Public
020: * License along with this library; if not, write to the Free Software
021: * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
022: * USA.
023: *
024: * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
025: * in the United States and other countries.]
026: *
027: * ------------------------
028: * GrayPaintScaleTests.java
029: * ------------------------
030: * (C) Copyright 2006, by Object Refinery Limited and Contributors.
031: *
032: * Original Author: David Gilbert (for Object Refinery Limited);
033: * Contributor(s): -;
034: *
035: * $Id: GrayPaintScaleTests.java,v 1.1.2.1 2007/01/31 14:15:16 mungady Exp $
036: *
037: * Changes
038: * -------
039: * 05-Jul-2006 : Version 1 (DG);
040: *
041: */
042:
043: package org.jfree.chart.renderer.junit;
044:
045: import java.io.ByteArrayInputStream;
046: import java.io.ByteArrayOutputStream;
047: import java.io.ObjectInput;
048: import java.io.ObjectInputStream;
049: import java.io.ObjectOutput;
050: import java.io.ObjectOutputStream;
051:
052: import org.jfree.chart.renderer.GrayPaintScale;
053:
054: import junit.framework.Test;
055: import junit.framework.TestCase;
056: import junit.framework.TestSuite;
057:
058: /**
059: * Tests for the {@link GrayPaintScale} class.
060: */
061: public class GrayPaintScaleTests extends TestCase {
062:
063: /**
064: * Returns the tests as a test suite.
065: *
066: * @return The test suite.
067: */
068: public static Test suite() {
069: return new TestSuite(GrayPaintScaleTests.class);
070: }
071:
072: /**
073: * Constructs a new set of tests.
074: *
075: * @param name the name of the tests.
076: */
077: public GrayPaintScaleTests(String name) {
078: super (name);
079: }
080:
081: /**
082: * A test for the equals() method.
083: */
084: public void testEquals() {
085: GrayPaintScale g1 = new GrayPaintScale();
086: GrayPaintScale g2 = new GrayPaintScale();
087: assertTrue(g1.equals(g2));
088: assertTrue(g2.equals(g1));
089:
090: g1 = new GrayPaintScale(0.0, 1.0);
091: g2 = new GrayPaintScale(0.0, 1.0);
092: assertTrue(g1.equals(g2));
093: g1 = new GrayPaintScale(0.1, 1.0);
094: assertFalse(g1.equals(g2));
095: g2 = new GrayPaintScale(0.1, 1.0);
096: assertTrue(g1.equals(g2));
097:
098: g1 = new GrayPaintScale(0.1, 0.9);
099: assertFalse(g1.equals(g2));
100: g2 = new GrayPaintScale(0.1, 0.9);
101: assertTrue(g1.equals(g2));
102: }
103:
104: /**
105: * Confirm that cloning works.
106: */
107: public void testCloning() {
108: GrayPaintScale g1 = new GrayPaintScale();
109: GrayPaintScale g2 = null;
110: try {
111: g2 = (GrayPaintScale) g1.clone();
112: } catch (CloneNotSupportedException e) {
113: e.printStackTrace();
114: }
115: assertTrue(g1 != g2);
116: assertTrue(g1.getClass() == g2.getClass());
117: assertTrue(g1.equals(g2));
118: }
119:
120: /**
121: * Serialize an instance, restore it, and check for equality.
122: */
123: public void testSerialization() {
124: GrayPaintScale g1 = new GrayPaintScale();
125: GrayPaintScale g2 = null;
126: try {
127: ByteArrayOutputStream buffer = new ByteArrayOutputStream();
128: ObjectOutput out = new ObjectOutputStream(buffer);
129: out.writeObject(g1);
130: out.close();
131:
132: ObjectInput in = new ObjectInputStream(
133: new ByteArrayInputStream(buffer.toByteArray()));
134: g2 = (GrayPaintScale) in.readObject();
135: in.close();
136: } catch (Exception e) {
137: e.printStackTrace();
138: }
139: assertEquals(g1, g2);
140: }
141:
142: }
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