jfreechart example source code file (JFreeChartTests.java)
The jfreechart JFreeChartTests.java source code
/* ===========================================================
* 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.]
*
* --------------------
* JFreeChartTests.java
* --------------------
* (C) Copyright 2002-2008, 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);
* 23-Sep-2003 : Removed null title test, since TM has added code to ensure
* null titles cannot be created (DG);
* 24-Nov-2005 : Removed OldLegend (DG);
* 16-May-2007 : Added some new tests (DG);
*
*/
package org.jfree.chart.junit;
import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Font;
import java.awt.GradientPaint;
import java.awt.RenderingHints;
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 java.util.List;
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.chart.plot.PlotOrientation;
import org.jfree.chart.plot.RingPlot;
import org.jfree.chart.title.LegendTitle;
import org.jfree.chart.title.TextTitle;
import org.jfree.chart.title.Title;
import org.jfree.data.category.DefaultCategoryDataset;
import org.jfree.data.general.DefaultPieDataset;
import org.jfree.data.time.Day;
import org.jfree.data.time.RegularTimePeriod;
import org.jfree.data.time.TimeSeries;
import org.jfree.data.time.TimeSeriesCollection;
import org.jfree.ui.Align;
import org.jfree.ui.RectangleEdge;
import org.jfree.ui.RectangleInsets;
/**
* Tests for the {@link JFreeChart} class.
*/
public class JFreeChartTests extends TestCase implements ChartChangeListener {
/** A pie chart. */
private JFreeChart pieChart;
/**
* Returns the tests as a test suite.
*
* @return The test suite.
*/
public static Test suite() {
return new TestSuite(JFreeChartTests.class);
}
/**
* Constructs a new set of tests.
*
* @param name the name of the tests.
*/
public JFreeChartTests(String name) {
super(name);
}
/**
* Common test setup.
*/
protected void setUp() {
// create a dataset...
DefaultPieDataset data = new DefaultPieDataset();
data.setValue("Java", new Double(43.2));
data.setValue("Visual Basic", new Double(0.0));
data.setValue("C/C++", new Double(17.5));
// create the chart...
this.pieChart = ChartFactory.createPieChart(
"Pie Chart", // chart title
data, // data
true, // include legend
true,
false
);
}
/**
* Check that the equals() method can distinguish all fields.
*/
public void testEquals() {
JFreeChart chart1 = new JFreeChart("Title",
new Font("SansSerif", Font.PLAIN, 12), new PiePlot(), true);
JFreeChart chart2 = new JFreeChart("Title",
new Font("SansSerif", Font.PLAIN, 12), new PiePlot(), true);
assertTrue(chart1.equals(chart2));
assertTrue(chart2.equals(chart1));
// renderingHints
chart1.setRenderingHints(new RenderingHints(
RenderingHints.KEY_TEXT_ANTIALIASING,
RenderingHints.VALUE_TEXT_ANTIALIAS_ON));
assertFalse(chart1.equals(chart2));
chart2.setRenderingHints(new RenderingHints(
RenderingHints.KEY_TEXT_ANTIALIASING,
RenderingHints.VALUE_TEXT_ANTIALIAS_ON));
assertTrue(chart1.equals(chart2));
// borderVisible
chart1.setBorderVisible(true);
assertFalse(chart1.equals(chart2));
chart2.setBorderVisible(true);
assertTrue(chart1.equals(chart2));
// borderStroke
BasicStroke s = new BasicStroke(2.0f);
chart1.setBorderStroke(s);
assertFalse(chart1.equals(chart2));
chart2.setBorderStroke(s);
assertTrue(chart1.equals(chart2));
// borderPaint
chart1.setBorderPaint(Color.red);
assertFalse(chart1.equals(chart2));
chart2.setBorderPaint(Color.red);
assertTrue(chart1.equals(chart2));
// padding
chart1.setPadding(new RectangleInsets(1, 2, 3, 4));
assertFalse(chart1.equals(chart2));
chart2.setPadding(new RectangleInsets(1, 2, 3, 4));
assertTrue(chart1.equals(chart2));
// title
chart1.setTitle("XYZ");
assertFalse(chart1.equals(chart2));
chart2.setTitle("XYZ");
assertTrue(chart1.equals(chart2));
// subtitles
chart1.addSubtitle(new TextTitle("Subtitle"));
assertFalse(chart1.equals(chart2));
chart2.addSubtitle(new TextTitle("Subtitle"));
assertTrue(chart1.equals(chart2));
// plot
chart1 = new JFreeChart("Title",
new Font("SansSerif", Font.PLAIN, 12), new RingPlot(), false);
chart2 = new JFreeChart("Title",
new Font("SansSerif", Font.PLAIN, 12), new PiePlot(), false);
assertFalse(chart1.equals(chart2));
chart2 = new JFreeChart("Title",
new Font("SansSerif", Font.PLAIN, 12), new RingPlot(), false);
assertTrue(chart1.equals(chart2));
// backgroundPaint
chart1.setBackgroundPaint(new GradientPaint(1.0f, 2.0f, Color.red,
3.0f, 4.0f, Color.blue));
assertFalse(chart1.equals(chart2));
chart2.setBackgroundPaint(new GradientPaint(1.0f, 2.0f, Color.red,
3.0f, 4.0f, Color.blue));
assertTrue(chart1.equals(chart2));
// backgroundImage
chart1.setBackgroundImage(JFreeChart.INFO.getLogo());
assertFalse(chart1.equals(chart2));
chart2.setBackgroundImage(JFreeChart.INFO.getLogo());
assertTrue(chart1.equals(chart2));
// backgroundImageAlignment
chart1.setBackgroundImageAlignment(Align.BOTTOM_LEFT);
assertFalse(chart1.equals(chart2));
chart2.setBackgroundImageAlignment(Align.BOTTOM_LEFT);
assertTrue(chart1.equals(chart2));
// backgroundImageAlpha
chart1.setBackgroundImageAlpha(0.1f);
assertFalse(chart1.equals(chart2));
chart2.setBackgroundImageAlpha(0.1f);
assertTrue(chart1.equals(chart2));
}
/**
* A test to make sure that the legend is being picked up in the
* equals() testing.
*/
public void testEquals2() {
JFreeChart chart1 = new JFreeChart("Title",
new Font("SansSerif", Font.PLAIN, 12), new PiePlot(), true);
JFreeChart chart2 = new JFreeChart("Title",
new Font("SansSerif", Font.PLAIN, 12), new PiePlot(), false);
assertFalse(chart1.equals(chart2));
assertFalse(chart2.equals(chart1));
}
/**
* Checks the subtitle count - should be 1 (the legend).
*/
public void testSubtitleCount() {
int count = this.pieChart.getSubtitleCount();
assertEquals(1, count);
}
/**
* Some checks for the getSubtitle() method.
*/
public void testGetSubtitle() {
DefaultPieDataset dataset = new DefaultPieDataset();
JFreeChart chart = ChartFactory.createPieChart("title", dataset, true,
false, false);
Title t = chart.getSubtitle(0);
assertTrue(t instanceof LegendTitle);
boolean pass = false;
try {
t = chart.getSubtitle(-1);
}
catch (IllegalArgumentException e) {
pass = true;
}
assertTrue(pass);
pass = false;
try {
t = chart.getSubtitle(1);
}
catch (IllegalArgumentException e) {
pass = true;
}
assertTrue(pass);
pass = false;
try {
t = chart.getSubtitle(2);
}
catch (IllegalArgumentException e) {
pass = true;
}
assertTrue(pass);
}
/**
* Serialize a pie chart, restore it, and check for equality.
*/
public void testSerialization1() {
DefaultPieDataset data = new DefaultPieDataset();
data.setValue("Type 1", 54.5);
data.setValue("Type 2", 23.9);
data.setValue("Type 3", 45.8);
JFreeChart c1 = ChartFactory.createPieChart("Test", data, true, true,
true);
JFreeChart c2 = null;
try {
ByteArrayOutputStream buffer = new ByteArrayOutputStream();
ObjectOutput out = new ObjectOutputStream(buffer);
out.writeObject(c1);
out.close();
ObjectInput in = new ObjectInputStream(new ByteArrayInputStream(
buffer.toByteArray()));
c2 = (JFreeChart) in.readObject();
in.close();
}
catch (Exception e) {
e.printStackTrace();
}
assertEquals(c1, c2);
LegendTitle lt2 = c2.getLegend();
assertTrue(lt2.getSources()[0] == c2.getPlot());
}
/**
* Serialize a 3D pie chart, restore it, and check for equality.
*/
public void testSerialization2() {
DefaultPieDataset data = new DefaultPieDataset();
data.setValue("Type 1", 54.5);
data.setValue("Type 2", 23.9);
data.setValue("Type 3", 45.8);
JFreeChart c1 = ChartFactory.createPieChart3D("Test", data, true, true,
true);
JFreeChart c2 = null;
try {
ByteArrayOutputStream buffer = new ByteArrayOutputStream();
ObjectOutput out = new ObjectOutputStream(buffer);
out.writeObject(c1);
out.close();
ObjectInput in = new ObjectInputStream(new ByteArrayInputStream(
buffer.toByteArray()));
c2 = (JFreeChart) in.readObject();
in.close();
}
catch (Exception e) {
e.printStackTrace();
}
assertEquals(c1, c2);
}
/**
* Serialize a bar chart, restore it, and check for equality.
*/
public void testSerialization3() {
// row keys...
String series1 = "First";
String series2 = "Second";
String series3 = "Third";
// column keys...
String category1 = "Category 1";
String category2 = "Category 2";
String category3 = "Category 3";
String category4 = "Category 4";
String category5 = "Category 5";
String category6 = "Category 6";
String category7 = "Category 7";
String category8 = "Category 8";
// create the dataset...
DefaultCategoryDataset dataset = new DefaultCategoryDataset();
dataset.addValue(1.0, series1, category1);
dataset.addValue(4.0, series1, category2);
dataset.addValue(3.0, series1, category3);
dataset.addValue(5.0, series1, category4);
dataset.addValue(5.0, series1, category5);
dataset.addValue(7.0, series1, category6);
dataset.addValue(7.0, series1, category7);
dataset.addValue(8.0, series1, category8);
dataset.addValue(5.0, series2, category1);
dataset.addValue(7.0, series2, category2);
dataset.addValue(6.0, series2, category3);
dataset.addValue(8.0, series2, category4);
dataset.addValue(4.0, series2, category5);
dataset.addValue(4.0, series2, category6);
dataset.addValue(2.0, series2, category7);
dataset.addValue(1.0, series2, category8);
dataset.addValue(4.0, series3, category1);
dataset.addValue(3.0, series3, category2);
dataset.addValue(2.0, series3, category3);
dataset.addValue(3.0, series3, category4);
dataset.addValue(6.0, series3, category5);
dataset.addValue(3.0, series3, category6);
dataset.addValue(4.0, series3, category7);
dataset.addValue(3.0, series3, category8);
// create the chart...
JFreeChart c1 = ChartFactory.createBarChart(
"Vertical Bar Chart", // chart title
"Category", // domain axis label
"Value", // range axis label
dataset, // data
PlotOrientation.VERTICAL, // orientation
true, // include legend
true,
false
);
JFreeChart c2 = null;
try {
ByteArrayOutputStream buffer = new ByteArrayOutputStream();
ObjectOutput out = new ObjectOutputStream(buffer);
out.writeObject(c1);
out.close();
ObjectInput in = new ObjectInputStream(new ByteArrayInputStream(
buffer.toByteArray()));
c2 = (JFreeChart) in.readObject();
in.close();
}
catch (Exception e) {
e.printStackTrace();
}
assertEquals(c1, c2);
}
/**
* Serialize a time seroes chart, restore it, and check for equality.
*/
public void testSerialization4() {
RegularTimePeriod t = new Day();
TimeSeries series = new TimeSeries("Series 1");
series.add(t, 36.4);
t = t.next();
series.add(t, 63.5);
TimeSeriesCollection dataset = new TimeSeriesCollection();
dataset.addSeries(series);
JFreeChart c1 = ChartFactory.createTimeSeriesChart("Test", "Date",
"Value", dataset, true, true, true);
JFreeChart c2 = null;
try {
ByteArrayOutputStream buffer = new ByteArrayOutputStream();
ObjectOutput out = new ObjectOutputStream(buffer);
out.writeObject(c1);
out.close();
ObjectInput in = new ObjectInputStream(new ByteArrayInputStream(
buffer.toByteArray()));
c2 = (JFreeChart) in.readObject();
in.close();
}
catch (Exception e) {
e.printStackTrace();
}
assertEquals(c1, c2);
}
/**
* Some checks for the addSubtitle() methods.
*/
public void testAddSubtitle() {
DefaultPieDataset dataset = new DefaultPieDataset();
JFreeChart chart = ChartFactory.createPieChart("title", dataset, true,
false, false);
TextTitle t0 = new TextTitle("T0");
chart.addSubtitle(0, t0);
assertEquals(t0, chart.getSubtitle(0));
TextTitle t1 = new TextTitle("T1");
chart.addSubtitle(t1);
assertEquals(t1, chart.getSubtitle(2)); // subtitle 1 is the legend
boolean pass = false;
try {
chart.addSubtitle(null);
}
catch (IllegalArgumentException e) {
pass = true;
}
assertTrue(pass);
pass = false;
try {
chart.addSubtitle(-1, t0);
}
catch (IllegalArgumentException e) {
pass = true;
}
assertTrue(pass);
pass = false;
try {
chart.addSubtitle(4, t0);
}
catch (IllegalArgumentException e) {
pass = true;
}
assertTrue(pass);
}
/**
* Some checks for the getSubtitles() method.
*/
public void testGetSubtitles() {
DefaultPieDataset dataset = new DefaultPieDataset();
JFreeChart chart = ChartFactory.createPieChart("title", dataset, true,
false, false);
List subtitles = chart.getSubtitles();
assertEquals(1, chart.getSubtitleCount());
// adding something to the returned list should NOT change the chart
subtitles.add(new TextTitle("T"));
assertEquals(1, chart.getSubtitleCount());
}
/**
* Some checks for the default legend firing change events.
*/
public void testLegendEvents() {
DefaultPieDataset dataset = new DefaultPieDataset();
JFreeChart chart = ChartFactory.createPieChart("title", dataset, true,
false, false);
chart.addChangeListener(this);
this.lastChartChangeEvent = null;
LegendTitle legend = chart.getLegend();
legend.setPosition(RectangleEdge.TOP);
assertNotNull(this.lastChartChangeEvent);
}
/**
* Some checks for title changes and event notification.
*/
public void testTitleChangeEvent() {
DefaultPieDataset dataset = new DefaultPieDataset();
JFreeChart chart = ChartFactory.createPieChart("title", dataset, true,
false, false);
chart.addChangeListener(this);
this.lastChartChangeEvent = null;
TextTitle t = chart.getTitle();
t.setFont(new Font("Dialog", Font.BOLD, 9));
assertNotNull(this.lastChartChangeEvent);
this.lastChartChangeEvent = null;
// now create a new title and replace the existing title, several
// things should happen:
// (1) Adding the new title should trigger an immediate
// ChartChangeEvent;
// (2) Modifying the new title should trigger a ChartChangeEvent;
// (3) Modifying the old title should NOT trigger a ChartChangeEvent
TextTitle t2 = new TextTitle("T2");
chart.setTitle(t2);
assertNotNull(this.lastChartChangeEvent);
this.lastChartChangeEvent = null;
t2.setFont(new Font("Dialog", Font.BOLD, 9));
assertNotNull(this.lastChartChangeEvent);
this.lastChartChangeEvent = null;
t.setFont(new Font("Dialog", Font.BOLD, 9));
assertNull(this.lastChartChangeEvent);
this.lastChartChangeEvent = null;
}
/** The last ChartChangeEvent received. */
private ChartChangeEvent lastChartChangeEvent;
/**
* Records the last chart change event.
*
* @param event the event.
*/
public void chartChanged(ChartChangeEvent event) {
this.lastChartChangeEvent = event;
}
}
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