/* ===========================================================
* JFreeChart : a free chart library for the Java(tm) platform
* ===========================================================
*
* (C) Copyright 2000-2007, by Object Refinery Limited and Contributors.
*
* Project Info: http://www.jfree.org/jfreechart/index.html
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
* USA.
*
* [Java is a trademark or registered trademark of Sun Microsystems, Inc.
* in the United States and other countries.]
*
* --------------------
* PieDatasetTests.java
* --------------------
* (C) Copyright 2003-2007, by Object Refinery Limited and Contributors.
*
* Original Author: David Gilbert (for Object Refinery Limited);
* Contributor(s): -;
*
* Changes
* -------
* 18-Aug-2003 : Version 1 (DG);
* 31-Jul-2006 : Added test for new clear() method (DG);
* 01-Aug-2006 : Added testGetKey() and testGetIndex() methods (DG);
*
*/
package org.jfree.data.general.junit;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.ObjectInput;
import java.io.ObjectInputStream;
import java.io.ObjectOutput;
import java.io.ObjectOutputStream;
import junit.framework.Test;
import junit.framework.TestCase;
import junit.framework.TestSuite;
import org.jfree.data.general.DatasetChangeEvent;
import org.jfree.data.general.DatasetChangeListener;
import org.jfree.data.general.DefaultPieDataset;
/**
* Tests for the {@link org.jfree.data.general.PieDataset} class.
*/
public class DefaultPieDatasetTests extends TestCase
implements DatasetChangeListener {
private DatasetChangeEvent lastEvent;
public void datasetChanged(DatasetChangeEvent event) {
this.lastEvent = event;
}
/**
* Returns the tests as a test suite.
*
* @return The test suite.
*/
public static Test suite() {
return new TestSuite(DefaultPieDatasetTests.class);
}
/**
* Constructs a new set of tests.
*
* @param name the name of the tests.
*/
public DefaultPieDatasetTests(String name) {
super(name);
}
/**
* Some tests for the clear() method.
*/
public void testClear() {
DefaultPieDataset d = new DefaultPieDataset();
d.addChangeListener(this);
// no event is generated if the dataset is already empty
d.clear();
assertNull(this.lastEvent);
d.setValue("A", 1.0);
assertEquals(1, d.getItemCount());
this.lastEvent = null;
d.clear();
assertNotNull(this.lastEvent);
assertEquals(0, d.getItemCount());
}
/**
* Some checks for the getKey(int) method.
*/
public void testGetKey() {
DefaultPieDataset d = new DefaultPieDataset();
d.setValue("A", 1.0);
d.setValue("B", 2.0);
assertEquals("A", d.getKey(0));
assertEquals("B", d.getKey(1));
boolean pass = false;
try {
d.getKey(-1);
}
catch (IndexOutOfBoundsException e) {
pass = true;
}
assertTrue(pass);
pass = false;
try {
d.getKey(2);
}
catch (IndexOutOfBoundsException e) {
pass = true;
}
assertTrue(pass);
}
/**
* Some checks for the getIndex() method.
*/
public void testGetIndex() {
DefaultPieDataset d = new DefaultPieDataset();
d.setValue("A", 1.0);
d.setValue("B", 2.0);
assertEquals(0, d.getIndex("A"));
assertEquals(1, d.getIndex("B"));
assertEquals(-1, d.getIndex("XX"));
boolean pass = false;
try {
d.getIndex(null);
}
catch (IllegalArgumentException e) {
pass = true;
}
assertTrue(pass);
}
/**
* Confirm that cloning works.
*/
public void testCloning() {
DefaultPieDataset d1 = new DefaultPieDataset();
d1.setValue("V1", new Integer(1));
d1.setValue("V2", null);
d1.setValue("V3", new Integer(3));
DefaultPieDataset d2 = null;
try {
d2 = (DefaultPieDataset) d1.clone();
}
catch (CloneNotSupportedException e) {
System.err.println("Failed to clone.");
}
assertTrue(d1 != d2);
assertTrue(d1.getClass() == d2.getClass());
assertTrue(d1.equals(d2));
}
/**
* Serialize an instance, restore it, and check for equality.
*/
public void testSerialization() {
DefaultPieDataset d1 = new DefaultPieDataset();
d1.setValue("C1", new Double(234.2));
d1.setValue("C2", null);
d1.setValue("C3", new Double(345.9));
d1.setValue("C4", new Double(452.7));
DefaultPieDataset d2 = null;
try {
ByteArrayOutputStream buffer = new ByteArrayOutputStream();
ObjectOutput out = new ObjectOutputStream(buffer);
out.writeObject(d1);
out.close();
ObjectInput in = new ObjectInputStream(
new ByteArrayInputStream(buffer.toByteArray())
);
d2 = (DefaultPieDataset) in.readObject();
in.close();
}
catch (Exception e) {
System.out.println(e.toString());
}
assertEquals(d1, d2);
}
}