/* ===========================================================
* JFreeChart : a free chart library for the Java(tm) platform
* ===========================================================
*
* (C) Copyright 2000-2008, 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.]
*
* --------------------
* PieChart3DTests.java
* --------------------
* (C) Copyright 2004-2008, by Object Refinery Limited.
*
* Original Author: David Gilbert (for Object Refinery Limited);
* Contributor(s): -;
*
* Changes:
* --------
* 21-May-2004 : Version 1 (DG);
*
*/
package org.jfree.chart.junit;
import java.awt.Graphics2D;
import java.awt.geom.Rectangle2D;
import java.awt.image.BufferedImage;
import junit.framework.Test;
import junit.framework.TestCase;
import junit.framework.TestSuite;
import org.jfree.chart.ChartFactory;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.event.ChartChangeEvent;
import org.jfree.chart.event.ChartChangeListener;
import org.jfree.chart.plot.PiePlot;
import org.jfree.data.general.DefaultPieDataset;
import org.jfree.data.general.PieDataset;
/**
* Tests for a pie chart with a 3D effect.
*/
public class PieChart3DTests extends TestCase {
/** A chart. */
private JFreeChart pieChart;
/**
* Returns the tests as a test suite.
*
* @return The test suite.
*/
public static Test suite() {
return new TestSuite(PieChart3DTests.class);
}
/**
* Constructs a new set of tests.
*
* @param name the name of the tests.
*/
public PieChart3DTests(String name) {
super(name);
}
/**
* Common test setup.
*/
protected void setUp() {
// create a dataset...
DefaultPieDataset dataset = new DefaultPieDataset();
dataset.setValue("Java", new Double(43.2));
dataset.setValue("Visual Basic", new Double(0.0));
dataset.setValue("C/C++", new Double(17.5));
this.pieChart = createPieChart3D(dataset);
}
/**
* Using a regular pie chart, we replace the dataset with null. Expect to
* receive notification of a chart change event, and (of course) the
* dataset should be null.
*/
public void testReplaceDatasetOnPieChart() {
LocalListener l = new LocalListener();
this.pieChart.addChangeListener(l);
PiePlot plot = (PiePlot) this.pieChart.getPlot();
plot.setDataset(null);
assertEquals(true, l.flag);
assertNull(plot.getDataset());
}
/**
* Tests that no exceptions are thrown when there is a <code>null</code>
* value in the dataset.
*/
public void testNullValueInDataset() {
DefaultPieDataset dataset = new DefaultPieDataset();
dataset.setValue("Section 1", 10.0);
dataset.setValue("Section 2", 11.0);
dataset.setValue("Section 3", null);
JFreeChart chart = createPieChart3D(dataset);
boolean success = false;
try {
BufferedImage image = new BufferedImage(200 , 100,
BufferedImage.TYPE_INT_RGB);
Graphics2D g2 = image.createGraphics();
chart.draw(g2, new Rectangle2D.Double(0, 0, 200, 100), null, null);
g2.dispose();
success = true;
}
catch (Throwable t) {
success = false;
}
assertTrue(success);
}
/**
* Creates a pie chart.
*
* @param dataset the dataset.
*
* @return The pie chart.
*/
private static JFreeChart createPieChart3D(PieDataset dataset) {
return ChartFactory.createPieChart3D(
"Pie Chart", // chart title
dataset, // data
true, // include legend
true,
false
);
}
/**
* A chart change listener.
*/
static class LocalListener implements ChartChangeListener {
/** A flag. */
private boolean flag = false;
/**
* Event handler.
*
* @param event the event.
*/
public void chartChanged(ChartChangeEvent event) {
this.flag = true;
}
}
}