/* ===========================================================
* JFreeChart : a free chart library for the Java(tm) platform
* ===========================================================
*
* (C) Copyright 2000-2007, 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.]
*
* -------------------------------
* StackedXYAreaRenderer2Tests.java
* -------------------------------
* (C) Copyright 2005-2007, by Object Refinery Limited and Contributors.
*
* Original Author: David Gilbert (for Object Refinery Limited);
* Contributor(s): -;
*
* Changes
* -------
* 06-Jan-2005 : Version 1 (DG);
* 22-Aug-2006 : Added testDrawWithEmptyDataset() method (DG);
* 30-Nov-2006 : Extended testEquals() (DG);
*
*/
package org.jfree.chart.renderer.xy.junit;
import java.awt.Graphics2D;
import java.awt.geom.Rectangle2D;
import java.awt.image.BufferedImage;
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 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.NumberAxis;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.plot.XYPlot;
import org.jfree.chart.renderer.xy.StackedXYAreaRenderer2;
import org.jfree.data.Range;
import org.jfree.data.xy.DefaultTableXYDataset;
import org.jfree.data.xy.TableXYDataset;
/**
* Tests for the {@link StackedXYAreaRenderer2} class.
*/
public class StackedXYAreaRenderer2Tests extends TestCase {
/**
* Returns the tests as a test suite.
*
* @return The test suite.
*/
public static Test suite() {
return new TestSuite(StackedXYAreaRenderer2Tests.class);
}
/**
* Constructs a new set of tests.
*
* @param name the name of the tests.
*/
public StackedXYAreaRenderer2Tests(String name) {
super(name);
}
/**
* Test chart drawing with an empty dataset to ensure that this special
* case doesn't cause any exceptions.
*/
public void testDrawWithEmptyDataset() {
boolean success = false;
JFreeChart chart = ChartFactory.createStackedXYAreaChart("title", "x",
"y", new DefaultTableXYDataset(), PlotOrientation.VERTICAL,
true, false, false);
XYPlot plot = (XYPlot) chart.getPlot();
plot.setRenderer(new StackedXYAreaRenderer2());
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 (Exception e) {
success = false;
}
assertTrue(success);
}
/**
* Test that the equals() method distinguishes all fields.
*/
public void testEquals() {
StackedXYAreaRenderer2 r1 = new StackedXYAreaRenderer2();
StackedXYAreaRenderer2 r2 = new StackedXYAreaRenderer2();
assertEquals(r1, r2);
assertEquals(r2, r1);
r1.setRoundXCoordinates(!r1.getRoundXCoordinates());
assertFalse(r1.equals(r2));
r2.setRoundXCoordinates(r1.getRoundXCoordinates());
assertTrue(r1.equals(r2));
}
/**
* Two objects that are equal are required to return the same hashCode.
*/
public void testHashcode() {
StackedXYAreaRenderer2 r1 = new StackedXYAreaRenderer2();
StackedXYAreaRenderer2 r2 = new StackedXYAreaRenderer2();
assertTrue(r1.equals(r2));
int h1 = r1.hashCode();
int h2 = r2.hashCode();
assertEquals(h1, h2);
}
/**
* Confirm that cloning works.
*/
public void testCloning() {
StackedXYAreaRenderer2 r1 = new StackedXYAreaRenderer2();
StackedXYAreaRenderer2 r2 = null;
try {
r2 = (StackedXYAreaRenderer2) r1.clone();
}
catch (CloneNotSupportedException e) {
e.printStackTrace();
}
assertTrue(r1 != r2);
assertTrue(r1.getClass() == r2.getClass());
assertTrue(r1.equals(r2));
}
/**
* Serialize an instance, restore it, and check for equality.
*/
public void testSerialization() {
StackedXYAreaRenderer2 r1 = new StackedXYAreaRenderer2();
StackedXYAreaRenderer2 r2 = null;
try {
ByteArrayOutputStream buffer = new ByteArrayOutputStream();
ObjectOutput out = new ObjectOutputStream(buffer);
out.writeObject(r1);
out.close();
ObjectInput in = new ObjectInputStream(
new ByteArrayInputStream(buffer.toByteArray()));
r2 = (StackedXYAreaRenderer2) in.readObject();
in.close();
}
catch (Exception e) {
e.printStackTrace();
}
assertEquals(r1, r2);
}
/**
* Check that the renderer is calculating the range bounds correctly.
*/
public void testFindRangeBounds() {
TableXYDataset dataset
= RendererXYPackageTests.createTestTableXYDataset();
JFreeChart chart = ChartFactory.createStackedXYAreaChart(
"Test Chart", "X", "Y", dataset, PlotOrientation.VERTICAL,
false, false, false);
XYPlot plot = (XYPlot) chart.getPlot();
StackedXYAreaRenderer2 renderer = new StackedXYAreaRenderer2();
plot.setRenderer(renderer);
NumberAxis rangeAxis = (NumberAxis) plot.getRangeAxis();
Range bounds = rangeAxis.getRange();
assertTrue(bounds.contains(6.0));
assertTrue(bounds.contains(8.0));
// try null argument
assertNull(renderer.findRangeBounds(null));
// try empty dataset
assertNull(renderer.findRangeBounds(new DefaultTableXYDataset()));
}
}