001: /* ===========================================================
002: * JFreeChart : a free chart library for the Java(tm) platform
003: * ===========================================================
004: *
005: * (C) Copyright 2000-2005, 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: * NumberTickUnitTests.java
029: * ------------------------
030: * (C) Copyright 2005, by Object Refinery Limited and Contributors.
031: *
032: * Original Author: David Gilbert (for Object Refinery Limited);
033: * Contributor(s): -;
034: *
035: * $Id: NumberTickUnitTests.java,v 1.1.2.1 2006/10/03 15:41:24 mungady Exp $
036: *
037: * Changes
038: * -------
039: * 5-Jul-2005 : Version 1 (DG);
040: *
041: */
042:
043: package org.jfree.chart.axis.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: import java.text.DecimalFormat;
052:
053: import junit.framework.Test;
054: import junit.framework.TestCase;
055: import junit.framework.TestSuite;
056:
057: import org.jfree.chart.axis.NumberTickUnit;
058:
059: /**
060: * Some tests for the {@link NumberTickUnit} class.
061: */
062: public class NumberTickUnitTests extends TestCase {
063:
064: /**
065: * Returns the tests as a test suite.
066: *
067: * @return The test suite.
068: */
069: public static Test suite() {
070: return new TestSuite(NumberTickUnitTests.class);
071: }
072:
073: /**
074: * Constructs a new set of tests.
075: *
076: * @param name the name of the tests.
077: */
078: public NumberTickUnitTests(String name) {
079: super (name);
080: }
081:
082: /**
083: * Confirm that the equals method can distinguish all the required fields.
084: */
085: public void testEquals() {
086: NumberTickUnit t1 = new NumberTickUnit(1.23, new DecimalFormat(
087: "0.00"));
088: NumberTickUnit t2 = new NumberTickUnit(1.23, new DecimalFormat(
089: "0.00"));
090: assertTrue(t1.equals(t2));
091: assertTrue(t2.equals(t1));
092:
093: t1 = new NumberTickUnit(3.21, new DecimalFormat("0.00"));
094: assertFalse(t1.equals(t2));
095: t2 = new NumberTickUnit(3.21, new DecimalFormat("0.00"));
096: assertTrue(t1.equals(t2));
097:
098: t1 = new NumberTickUnit(3.21, new DecimalFormat("0.000"));
099: assertFalse(t1.equals(t2));
100: t2 = new NumberTickUnit(3.21, new DecimalFormat("0.000"));
101: assertTrue(t1.equals(t2));
102: }
103:
104: /**
105: * Two objects that are equal are required to return the same hashCode.
106: */
107: public void testHashCode() {
108: NumberTickUnit t1 = new NumberTickUnit(1.23, new DecimalFormat(
109: "0.00"));
110: NumberTickUnit t2 = new NumberTickUnit(1.23, new DecimalFormat(
111: "0.00"));
112: int h1 = t1.hashCode();
113: int h2 = t2.hashCode();
114: assertEquals(h1, h2);
115: }
116:
117: /**
118: * This is an immutable class so it doesn't need to be cloneable.
119: */
120: public void testCloning() {
121: NumberTickUnit t1 = new NumberTickUnit(1.23, new DecimalFormat(
122: "0.00"));
123: assertFalse(t1 instanceof Cloneable);
124: }
125:
126: /**
127: * Serialize an instance, restore it, and check for equality.
128: */
129: public void testSerialization() {
130: NumberTickUnit t1 = new NumberTickUnit(1.23, new DecimalFormat(
131: "0.00"));
132: NumberTickUnit t2 = null;
133: try {
134: ByteArrayOutputStream buffer = new ByteArrayOutputStream();
135: ObjectOutput out = new ObjectOutputStream(buffer);
136: out.writeObject(t1);
137: out.close();
138:
139: ObjectInput in = new ObjectInputStream(
140: new ByteArrayInputStream(buffer.toByteArray()));
141: t2 = (NumberTickUnit) in.readObject();
142: in.close();
143: } catch (Exception e) {
144: e.printStackTrace();
145: }
146: assertEquals(t1, t2);
147: }
148:
149: }
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