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: * MeanAndStandardDeviationTests.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: MeanAndStandardDeviationTests.java,v 1.1.2.1 2006/10/03 15:41:42 mungady Exp $
036: *
037: * Changes
038: * -------
039: * 05-Feb-2005 : Version 1 (DG);
040: *
041: */
042:
043: package org.jfree.data.statistics.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 junit.framework.Test;
053: import junit.framework.TestCase;
054: import junit.framework.TestSuite;
055:
056: import org.jfree.data.statistics.MeanAndStandardDeviation;
057:
058: /**
059: * Tests for the {@link MeanAndStandardDeviation} class.
060: */
061: public class MeanAndStandardDeviationTests 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(MeanAndStandardDeviationTests.class);
070: }
071:
072: /**
073: * Constructs a new set of tests.
074: *
075: * @param name the name of the tests.
076: */
077: public MeanAndStandardDeviationTests(String name) {
078: super (name);
079: }
080:
081: /**
082: * Confirm that the equals method can distinguish all the required fields.
083: */
084: public void testEquals() {
085: MeanAndStandardDeviation m1 = new MeanAndStandardDeviation(1.2,
086: 3.4);
087: MeanAndStandardDeviation m2 = new MeanAndStandardDeviation(1.2,
088: 3.4);
089: assertTrue(m1.equals(m2));
090: assertTrue(m2.equals(m1));
091:
092: m1 = new MeanAndStandardDeviation(1.0, 3.4);
093: assertFalse(m1.equals(m2));
094: m2 = new MeanAndStandardDeviation(1.0, 3.4);
095: assertTrue(m1.equals(m2));
096:
097: m1 = new MeanAndStandardDeviation(1.0, 3.0);
098: assertFalse(m1.equals(m2));
099: m2 = new MeanAndStandardDeviation(1.0, 3.0);
100: assertTrue(m1.equals(m2));
101: }
102:
103: /**
104: * Immutable class - should not be cloneable.
105: */
106: public void testCloning() {
107: MeanAndStandardDeviation m1 = new MeanAndStandardDeviation(1.2,
108: 3.4);
109: assertFalse(m1 instanceof Cloneable);
110: }
111:
112: /**
113: * Serialize an instance, restore it, and check for equality.
114: */
115: public void testSerialization() {
116: MeanAndStandardDeviation m1 = new MeanAndStandardDeviation(1.2,
117: 3.4);
118: MeanAndStandardDeviation m2 = null;
119:
120: try {
121: ByteArrayOutputStream buffer = new ByteArrayOutputStream();
122: ObjectOutput out = new ObjectOutputStream(buffer);
123: out.writeObject(m1);
124: out.close();
125:
126: ObjectInput in = new ObjectInputStream(
127: new ByteArrayInputStream(buffer.toByteArray()));
128: m2 = (MeanAndStandardDeviation) in.readObject();
129: in.close();
130: } catch (Exception e) {
131: System.out.println(e.toString());
132: }
133: assertEquals(m1, m2);
134:
135: }
136: }
|