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: * DateTickUnitTests.java
029: * ----------------------
030: * (C) Copyright 2003-2005, by Object Refinery Limited and Contributors.
031: *
032: * Original Author: David Gilbert (for Object Refinery Limited);
033: * Contributor(s): -;
034: *
035: * $Id: DateTickUnitTests.java,v 1.1.2.1 2006/10/03 15:41:24 mungady Exp $
036: *
037: * Changes
038: * -------
039: * 26-Mar-2003 : Version 1 (DG);
040: * 07-Jan-2005 : Added test for hashCode() (DG);
041: *
042: */
043:
044: package org.jfree.chart.axis.junit;
045:
046: import java.io.ByteArrayInputStream;
047: import java.io.ByteArrayOutputStream;
048: import java.io.ObjectInput;
049: import java.io.ObjectInputStream;
050: import java.io.ObjectOutput;
051: import java.io.ObjectOutputStream;
052:
053: import junit.framework.Test;
054: import junit.framework.TestCase;
055: import junit.framework.TestSuite;
056:
057: import org.jfree.chart.axis.DateTickUnit;
058:
059: /**
060: * Tests for the {@link DateTickUnit} class.
061: */
062: public class DateTickUnitTests 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(DateTickUnitTests.class);
071: }
072:
073: /**
074: * Constructs a new set of tests.
075: *
076: * @param name the name of the tests.
077: */
078: public DateTickUnitTests(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: DateTickUnit t1 = new DateTickUnit(DateTickUnit.DAY, 1);
087: DateTickUnit t2 = new DateTickUnit(DateTickUnit.DAY, 1);
088: assertTrue(t1.equals(t2));
089: }
090:
091: /**
092: * Two objects that are equal are required to return the same hashCode.
093: */
094: public void testHashCode() {
095: DateTickUnit t1 = new DateTickUnit(DateTickUnit.DAY, 1);
096: DateTickUnit t2 = new DateTickUnit(DateTickUnit.DAY, 1);
097: assertTrue(t1.equals(t2));
098: int h1 = t1.hashCode();
099: int h2 = t2.hashCode();
100: assertEquals(h1, h2);
101: }
102:
103: /**
104: * Serialize an instance, restore it, and check for equality.
105: */
106: public void testSerialization() {
107:
108: DateTickUnit a1 = new DateTickUnit(DateTickUnit.DAY, 7);
109: DateTickUnit a2 = null;
110:
111: try {
112: ByteArrayOutputStream buffer = new ByteArrayOutputStream();
113: ObjectOutput out = new ObjectOutputStream(buffer);
114: out.writeObject(a1);
115: out.close();
116:
117: ObjectInput in = new ObjectInputStream(
118: new ByteArrayInputStream(buffer.toByteArray()));
119: a2 = (DateTickUnit) in.readObject();
120: in.close();
121: } catch (Exception e) {
122: System.out.println(e.toString());
123: }
124: assertEquals(a1, a2);
125:
126: }
127:
128: }
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