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/* ===========================================================
* JFreeChart : a free chart library for the Java(tm) platform
* ===========================================================
*
* (C) Copyright 2000-2013, 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.]
*
* --------------------
* ScatterPlotTest.java
* --------------------
* (C) Copyright 2002-2013, by Object Refinery Limited.
*
* Original Author: David Gilbert (for Object Refinery Limited);
* Contributor(s): -;
*
* Changes:
* --------
* 11-Jun-2002 : Version 1 (DG);
* 17-Oct-2002 : Fixed errors reported by Checkstyle (DG);
*
*/
package org.jfree.chart;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
import java.awt.Graphics2D;
import java.awt.geom.Rectangle2D;
import java.awt.image.BufferedImage;
import org.jfree.chart.axis.ValueAxis;
import org.jfree.chart.event.ChartChangeEvent;
import org.jfree.chart.event.ChartChangeListener;
import org.jfree.chart.labels.StandardXYToolTipGenerator;
import org.jfree.chart.labels.XYToolTipGenerator;
import org.jfree.chart.plot.XYPlot;
import org.jfree.chart.renderer.xy.XYItemRenderer;
import org.jfree.data.Range;
import org.jfree.data.xy.XYDataset;
import org.jfree.data.xy.XYSeries;
import org.jfree.data.xy.XYSeriesCollection;
import org.junit.Before;
import org.junit.Test;
/**
* Tests for a scatter plot.
*/
public class ScatterPlotTest {
/** A chart. */
private JFreeChart chart;
/**
* Common test setup.
*/
@Before
public void setUp() {
this.chart = createChart();
}
/**
* 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() {
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();
}
catch (Exception e) {
fail("No exception should be thrown.");
}
}
/**
* Replaces the dataset and checks that it has changed as expected.
*/
@Test
public void testReplaceDataset() {
// create a dataset...
XYSeries series1 = new XYSeries("Series 1");
series1.add(10.0, 10.0);
series1.add(20.0, 20.0);
series1.add(30.0, 30.0);
XYDataset dataset = new XYSeriesCollection(series1);
LocalListener l = new LocalListener();
this.chart.addChangeListener(l);
XYPlot plot = (XYPlot) this.chart.getPlot();
plot.setDataset(dataset);
assertEquals(true, l.flag);
ValueAxis axis = plot.getRangeAxis();
Range range = axis.getRange();
assertTrue("Expecting the lower bound of the range to be around 10: "
+ range.getLowerBound(), range.getLowerBound() <= 10);
assertTrue("Expecting the upper bound of the range to be around 30: "
+ range.getUpperBound(), range.getUpperBound() >= 30);
}
/**
* Check that setting a tool tip generator for a series does override the
* default generator.
*/
@Test
public void testSetSeriesToolTipGenerator() {
XYPlot plot = (XYPlot) this.chart.getPlot();
XYItemRenderer renderer = plot.getRenderer();
StandardXYToolTipGenerator tt = new StandardXYToolTipGenerator();
renderer.setSeriesToolTipGenerator(0, tt);
XYToolTipGenerator tt2 = renderer.getToolTipGenerator(0, 0);
assertTrue(tt2 == tt);
}
/**
* Create a horizontal bar chart with sample data in the range -3 to +3.
*
* @return The chart.
*/
private static JFreeChart createChart() {
XYSeries series1 = new XYSeries("Series 1");
series1.add(1.0, 1.0);
series1.add(2.0, 2.0);
series1.add(3.0, 3.0);
XYDataset dataset = new XYSeriesCollection(series1);
return ChartFactory.createScatterPlot("Scatter Plot", "Domain",
"Range", dataset);
}
/**
* A chart change listener.
*
*/
static class LocalListener implements ChartChangeListener {
/** A flag. */
private boolean flag = false;
/**
* Event handler.
*
* @param event the event.
*/
@Override
public void chartChanged(ChartChangeEvent event) {
this.flag = true;
}
}
}
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