/* ===========================================================
* 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.]
*
* ----------------------------
* LayeredBarRendererTests.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);
*
*/
package org.jfree.chart.renderer.category.junit;
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.axis.CategoryAxis;
import org.jfree.chart.axis.NumberAxis;
import org.jfree.chart.plot.CategoryPlot;
import org.jfree.chart.renderer.category.LayeredBarRenderer;
import org.jfree.data.category.DefaultCategoryDataset;
/**
* Tests for the {@link LayeredBarRenderer} class.
*/
public class LayeredBarRendererTests extends TestCase {
/**
* Returns the tests as a test suite.
*
* @return The test suite.
*/
public static Test suite() {
return new TestSuite(LayeredBarRendererTests.class);
}
/**
* Constructs a new set of tests.
*
* @param name the name of the tests.
*/
public LayeredBarRendererTests(String name) {
super(name);
}
/**
* Check that the equals() method distinguishes all fields.
*/
public void testEquals() {
LayeredBarRenderer r1 = new LayeredBarRenderer();
LayeredBarRenderer r2 = new LayeredBarRenderer();
assertEquals(r1, r2);
}
/**
* Two objects that are equal are required to return the same hashCode.
*/
public void testHashcode() {
LayeredBarRenderer r1 = new LayeredBarRenderer();
LayeredBarRenderer r2 = new LayeredBarRenderer();
assertTrue(r1.equals(r2));
int h1 = r1.hashCode();
int h2 = r2.hashCode();
assertEquals(h1, h2);
}
/**
* Confirm that cloning works.
*/
public void testCloning() {
LayeredBarRenderer r1 = new LayeredBarRenderer();
LayeredBarRenderer r2 = null;
try {
r2 = (LayeredBarRenderer) r1.clone();
}
catch (CloneNotSupportedException e) {
System.err.println("Failed to clone.");
}
assertTrue(r1 != r2);
assertTrue(r1.getClass() == r2.getClass());
assertTrue(r1.equals(r2));
}
/**
* Serialize an instance, restore it, and check for equality.
*/
public void testSerialization() {
LayeredBarRenderer r1 = new LayeredBarRenderer();
LayeredBarRenderer 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 = (LayeredBarRenderer) in.readObject();
in.close();
}
catch (Exception e) {
System.out.println(e.toString());
}
assertEquals(r1, r2);
}
/**
* Draws the chart with a <code>null</code> info object to make sure that
* no exceptions are thrown (particularly by code in the renderer).
*/
public void testDrawWithNullInfo() {
boolean success = false;
try {
DefaultCategoryDataset dataset = new DefaultCategoryDataset();
dataset.addValue(1.0, "S1", "C1");
CategoryPlot plot = new CategoryPlot(dataset,
new CategoryAxis("Category"), new NumberAxis("Value"),
new LayeredBarRenderer());
JFreeChart chart = new JFreeChart(plot);
/* BufferedImage image = */ chart.createBufferedImage(300, 200,
null);
success = true;
}
catch (NullPointerException e) {
e.printStackTrace();
success = false;
}
assertTrue(success);
}
}