/* ===========================================================
* JFreeChart : a free chart library for the Java(tm) platform
* ===========================================================
*
* (C) Copyright 2000-2005, 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.]
*
* -------------------
* AreaChartTests.java
* -------------------
* (C) Copyright 2005, by Object Refinery Limited.
*
* Original Author: David Gilbert (for Object Refinery Limited);
* Contributor(s): -;
*
* $Id: AreaChartTests.java,v 1.1.2.1 2005/10/25 20:43:31 mungady Exp $
*
* Changes:
* --------
* 12-Apr-2005 : 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.axis.ValueAxis;
import org.jfree.chart.event.ChartChangeEvent;
import org.jfree.chart.event.ChartChangeListener;
import org.jfree.chart.labels.CategoryToolTipGenerator;
import org.jfree.chart.labels.StandardCategoryToolTipGenerator;
import org.jfree.chart.plot.CategoryPlot;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.renderer.category.CategoryItemRenderer;
import org.jfree.chart.urls.CategoryURLGenerator;
import org.jfree.chart.urls.StandardCategoryURLGenerator;
import org.jfree.data.Range;
import org.jfree.data.category.CategoryDataset;
import org.jfree.data.general.DatasetUtilities;
/**
* Tests for an area chart.
*/
public class AreaChartTests extends TestCase {
/** A chart. */
private JFreeChart chart;
/**
* Returns the tests as a test suite.
*
* @return The test suite.
*/
public static Test suite() {
return new TestSuite(AreaChartTests.class);
}
/**
* Constructs a new set of tests.
*
* @param name the name of the tests.
*/
public AreaChartTests(String name) {
super(name);
}
/**
* Common test setup.
*/
protected void setUp() {
this.chart = createAreaChart();
}
/**
* Check that setting a tool tip generator for a series does override the
* default generator.
*/
public void testSetSeriesToolTipGenerator() {
CategoryPlot plot = (CategoryPlot) this.chart.getPlot();
CategoryItemRenderer renderer = plot.getRenderer();
StandardCategoryToolTipGenerator tt
= new StandardCategoryToolTipGenerator();
renderer.setSeriesToolTipGenerator(0, tt);
CategoryToolTipGenerator tt2 = renderer.getToolTipGenerator(0, 0);
assertTrue(tt2 == tt);
}
/**
* Check that setting a URL generator for a series does override the
* default generator.
*/
public void testSetSeriesURLGenerator() {
CategoryPlot plot = (CategoryPlot) this.chart.getPlot();
CategoryItemRenderer renderer = plot.getRenderer();
StandardCategoryURLGenerator url1
= new StandardCategoryURLGenerator();
renderer.setSeriesItemURLGenerator(0, url1);
CategoryURLGenerator url2 = renderer.getItemURLGenerator(0, 0);
assertTrue(url2 == url1);
}
/**
* Draws the chart with a null info object to make sure that no exceptions
* are thrown (a problem that was occurring at one point).
*/
public void testDrawWithNullInfo() {
boolean success = false;
try {
BufferedImage image = new BufferedImage(
200 , 100, BufferedImage.TYPE_INT_RGB
);
Graphics2D g2 = image.createGraphics();
this.chart.draw(
g2, new Rectangle2D.Double(0, 0, 200, 100), null, null
);
g2.dispose();
success = true;
}
catch (Exception e) {
success = false;
}
assertTrue(success);
}
/**
* Replaces the chart's dataset and then checks that the new dataset is OK.
*/
public void testReplaceDataset() {
Number[][] data = new Integer[][]
{{new Integer(-30), new Integer(-20)},
{new Integer(-10), new Integer(10)},
{new Integer(20), new Integer(30)}};
CategoryDataset newData = DatasetUtilities.createCategoryDataset(
"S", "C", data
);
LocalListener l = new LocalListener();
this.chart.addChangeListener(l);
this.chart.getCategoryPlot().setDataset(newData);
assertEquals(true, l.flag);
ValueAxis axis = this.chart.getCategoryPlot().getRangeAxis();
Range range = axis.getRange();
assertTrue("Expecting the lower bound of the range to be around -30: "
+ range.getLowerBound(), range.getLowerBound() <= -30);
assertTrue("Expecting the upper bound of the range to be around 30: "
+ range.getUpperBound(), range.getUpperBound() >= 30);
}
/**
* Create an area chart with sample data in the range -3 to +3.
*
* @return The chart.
*/
private static JFreeChart createAreaChart() {
Number[][] data = new Integer[][]
{{new Integer(-3), new Integer(-2)},
{new Integer(-1), new Integer(1)},
{new Integer(2), new Integer(3)}};
CategoryDataset dataset
= DatasetUtilities.createCategoryDataset("S", "C", data);
return ChartFactory.createAreaChart(
"Area Chart",
"Domain", "Range",
dataset,
PlotOrientation.HORIZONTAL,
true, // include legend
true,
true
);
}
/**
* 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;
}
}
}