/* ===========================================================
* 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.]
*
* ------------------------------
* XYDifferenceRendererTests.java
* ------------------------------
* (C) Copyright 2003-2007, by Object Refinery Limited and Contributors.
*
* Original Author: David Gilbert (for Object Refinery Limited);
* Contributor(s): -;
*
* Changes
* -------
* 22-Oct-2003 : Version 1 (DG);
* 04-May-2005 : Improved equals() test (DG);
* 24-Jan-2007 : Added 'roundXCoordinates' to testEquals(), and improved
* testClone() (DG);
* 17-May-2007 : Added testGetLegendItemSeriesIndex() (DG);
*
*/
package org.jfree.chart.renderer.xy.junit;
import java.awt.Color;
import java.awt.GradientPaint;
import java.awt.Shape;
import java.awt.geom.Line2D;
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.JFreeChart;
import org.jfree.chart.LegendItem;
import org.jfree.chart.axis.NumberAxis;
import org.jfree.chart.plot.XYPlot;
import org.jfree.chart.renderer.xy.XYDifferenceRenderer;
import org.jfree.data.xy.XYSeries;
import org.jfree.data.xy.XYSeriesCollection;
/**
* Tests for the {@link XYDifferenceRenderer} class.
*/
public class XYDifferenceRendererTests extends TestCase {
/**
* Returns the tests as a test suite.
*
* @return The test suite.
*/
public static Test suite() {
return new TestSuite(XYDifferenceRendererTests.class);
}
/**
* Constructs a new set of tests.
*
* @param name the name of the tests.
*/
public XYDifferenceRendererTests(String name) {
super(name);
}
/**
* Check that the equals() method distinguishes all fields.
*/
public void testEquals() {
XYDifferenceRenderer r1 = new XYDifferenceRenderer(
Color.red, Color.blue, false);
XYDifferenceRenderer r2 = new XYDifferenceRenderer(
Color.red, Color.blue, false);
assertEquals(r1, r2);
// positive paint
r1.setPositivePaint(new GradientPaint(1.0f, 2.0f, Color.red,
3.0f, 4.0f, Color.blue));
assertFalse(r1.equals(r2));
r2.setPositivePaint(new GradientPaint(1.0f, 2.0f, Color.red,
3.0f, 4.0f, Color.blue));
assertTrue(r1.equals(r2));
// negative paint
r1.setNegativePaint(new GradientPaint(1.0f, 2.0f, Color.yellow,
3.0f, 4.0f, Color.blue));
assertFalse(r1.equals(r2));
r2.setNegativePaint(new GradientPaint(1.0f, 2.0f, Color.yellow,
3.0f, 4.0f, Color.blue));
assertTrue(r1.equals(r2));
// shapesVisible
r1 = new XYDifferenceRenderer(Color.green, Color.yellow, true);
assertFalse(r1.equals(r2));
r2 = new XYDifferenceRenderer(Color.green, Color.yellow, true);
assertTrue(r1.equals(r2));
// legendLine
r1.setLegendLine(new Line2D.Double(1.0, 2.0, 3.0, 4.0));
assertFalse(r1.equals(r2));
r2.setLegendLine(new Line2D.Double(1.0, 2.0, 3.0, 4.0));
assertTrue(r1.equals(r2));
// roundXCoordinates
r1.setRoundXCoordinates(true);
assertFalse(r1.equals(r2));
r2.setRoundXCoordinates(true);
assertTrue(r1.equals(r2));
assertFalse(r1.equals(null));
}
/**
* Two objects that are equal are required to return the same hashCode.
*/
public void testHashcode() {
XYDifferenceRenderer r1
= new XYDifferenceRenderer(Color.red, Color.blue, false);
XYDifferenceRenderer r2
= new XYDifferenceRenderer(Color.red, Color.blue, false);
assertTrue(r1.equals(r2));
int h1 = r1.hashCode();
int h2 = r2.hashCode();
assertEquals(h1, h2);
}
/**
* Confirm that cloning works.
*/
public void testCloning() {
XYDifferenceRenderer r1 = new XYDifferenceRenderer(Color.red,
Color.blue, false);
XYDifferenceRenderer r2 = null;
try {
r2 = (XYDifferenceRenderer) r1.clone();
}
catch (CloneNotSupportedException e) {
e.printStackTrace();
}
assertTrue(r1 != r2);
assertTrue(r1.getClass() == r2.getClass());
assertTrue(r1.equals(r2));
// check independence
Shape s = r1.getLegendLine();
if (s instanceof Line2D) {
Line2D l = (Line2D) s;
l.setLine(1.0, 2.0, 3.0, 4.0);
assertFalse(r1.equals(r2));
}
}
/**
* Serialize an instance, restore it, and check for equality.
*/
public void testSerialization() {
XYDifferenceRenderer r1 = new XYDifferenceRenderer(Color.red,
Color.blue, false);
XYDifferenceRenderer 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 = (XYDifferenceRenderer) in.readObject();
in.close();
}
catch (Exception e) {
e.printStackTrace();
}
assertEquals(r1, r2);
}
/**
* A check for the datasetIndex and seriesIndex fields in the LegendItem
* returned by the getLegendItem() method.
*/
public void testGetLegendItemSeriesIndex() {
XYSeriesCollection d1 = new XYSeriesCollection();
XYSeries s1 = new XYSeries("S1");
s1.add(1.0, 1.1);
XYSeries s2 = new XYSeries("S2");
s2.add(1.0, 1.1);
d1.addSeries(s1);
d1.addSeries(s2);
XYSeriesCollection d2 = new XYSeriesCollection();
XYSeries s3 = new XYSeries("S3");
s3.add(1.0, 1.1);
XYSeries s4 = new XYSeries("S4");
s4.add(1.0, 1.1);
XYSeries s5 = new XYSeries("S5");
s5.add(1.0, 1.1);
d2.addSeries(s3);
d2.addSeries(s4);
d2.addSeries(s5);
XYDifferenceRenderer r = new XYDifferenceRenderer();
XYPlot plot = new XYPlot(d1, new NumberAxis("x"),
new NumberAxis("y"), r);
plot.setDataset(1, d2);
/*JFreeChart chart =*/ new JFreeChart(plot);
LegendItem li = r.getLegendItem(1, 2);
assertEquals("S5", li.getLabel());
assertEquals(1, li.getDatasetIndex());
assertEquals(2, li.getSeriesIndex());
}
}