/* ===========================================================
* JFreeChart : a free chart library for the Java(tm) platform
* ===========================================================
*
* (C) Copyright 2000-2012, 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.
*
* [Oracle and Java are registered trademarks of Oracle and/or its affiliates.
* Other names may be trademarks of their respective owners.]
*
* -------------------
* AreaChartTests.java
* -------------------
* (C) Copyright 2005-2008, by Object Refinery Limited.
*
* Original Author: David Gilbert (for Object Refinery Limited);
* Contributor(s): -;
*
* Changes:
* --------
* 12-Apr-2005 : Version 1 (DG);
*
*/
package org.jfree.chart;
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.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;
import org.junit.Before;
import org.junit.Test;
import java.awt.Graphics2D;
import java.awt.geom.Rectangle2D;
import java.awt.image.BufferedImage;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertSame;
import static org.junit.Assert.assertTrue;
/**
* Tests for an area chart.
*/
public class AreaChartTest {
/** A chart. */
private JFreeChart chart;
/**
* Common test setup.
*/
@Before
public void setUp() {
this.chart = createAreaChart();
}
/**
* Check that setting a tool tip generator for a series does override the
* default generator.
*/
@Test
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);
assertSame(tt2, tt);
}
/**
* Check that setting a URL generator for a series does override the
* default generator.
*/
@Test
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);
assertSame(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).
*/
@Test
public void testDrawWithNullInfo() {
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();
//FIXME this should really assert a return value
}
/**
* Replaces the chart's dataset and then checks that the new dataset is OK.
*/
@Test
public void testReplaceDataset() {
Number[][] data = new Integer[][]
{{-30, -20},
{-10, 10},
{20, 30}};
CategoryDataset newData = DatasetUtilities.createCategoryDataset(
"S", "C", data);
LocalListener l = new LocalListener();
this.chart.addChangeListener(l);
CategoryPlot plot = (CategoryPlot) this.chart.getPlot();
plot.setDataset(newData);
assertEquals(true, l.flag);
ValueAxis axis = plot.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[][]
{{-3, -2},
{-1, 1},
{2, 3}};
CategoryDataset dataset = DatasetUtilities.createCategoryDataset("S",
"C", data);
return ChartFactory.createAreaChart("Area Chart", "Domain", "Range",
dataset);
}
/**
* A chart change listener.
*/
static class LocalListener implements ChartChangeListener {
/** A flag. */
private boolean flag;
/**
* Event handler.
*
* @param event the event.
*/
@Override
public void chartChanged(ChartChangeEvent event) {
this.flag = true;
}
}
}