/* ===========================================================
* JFreeChart : a free chart library for the Java(tm) platform
* ===========================================================
*
* (C) Copyright 2000-2012, 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.]
*
* -----------------------
* LevelRendererTests.java
* -----------------------
* (C) Copyright 2005-2008, by Object Refinery Limited and Contributors.
*
* Original Author: David Gilbert (for Object Refinery Limited);
* Contributor(s): -;
*
* Changes
* -------
* 29-Mar-2005 : Version 1 (DG);
* 23-Apr-2008 : Added testPublicCloneable (DG);
*
*/
package org.jfree.chart.renderer.category;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.LegendItem;
import org.jfree.chart.axis.CategoryAxis;
import org.jfree.chart.axis.NumberAxis;
import org.jfree.chart.plot.CategoryPlot;
import org.jfree.chart.util.PublicCloneable;
import org.jfree.data.category.DefaultCategoryDataset;
import org.junit.Test;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.ObjectInput;
import java.io.ObjectInputStream;
import java.io.ObjectOutput;
import java.io.ObjectOutputStream;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNotSame;
import static org.junit.Assert.assertSame;
import static org.junit.Assert.assertTrue;
/**
* Tests for the {@link LevelRenderer} class.
*/
public class LevelRendererTest {
/**
* Test that the equals() method distinguishes all fields.
*/
@Test
public void testEquals() {
LevelRenderer r1 = new LevelRenderer();
LevelRenderer r2 = new LevelRenderer();
assertEquals(r1, r2);
assertEquals(r2, r1);
r1.setItemMargin(0.123);
assertFalse(r1.equals(r2));
r2.setItemMargin(0.123);
assertEquals(r1, r2);
r1.setMaximumItemWidth(0.234);
assertFalse(r1.equals(r2));
r2.setMaximumItemWidth(0.234);
assertEquals(r1, r2);
}
/**
* Two objects that are equal are required to return the same hashCode.
*/
@Test
public void testHashcode() {
LevelRenderer r1 = new LevelRenderer();
LevelRenderer r2 = new LevelRenderer();
assertEquals(r1, r2);
int h1 = r1.hashCode();
int h2 = r2.hashCode();
assertEquals(h1, h2);
}
/**
* Confirm that cloning works.
*/
@Test
public void testCloning() throws CloneNotSupportedException {
LevelRenderer r1 = new LevelRenderer();
r1.setItemMargin(0.123);
r1.setMaximumItemWidth(0.234);
LevelRenderer r2 = (LevelRenderer) r1.clone();
assertNotSame(r1, r2);
assertSame(r1.getClass(), r2.getClass());
assertEquals(r1, r2);
assertTrue(checkIndependence(r1, r2));
}
/**
* Check that this class implements PublicCloneable.
*/
@Test
public void testPublicCloneable() {
LevelRenderer r1 = new LevelRenderer();
assertTrue(r1 instanceof PublicCloneable);
}
/**
* Checks that the two renderers are equal but independent of one another.
*
* @param r1 renderer 1.
* @param r2 renderer 2.
*
* @return A boolean.
*/
private boolean checkIndependence(LevelRenderer r1, LevelRenderer r2) {
// should be equal...
boolean b0 = r1.equals(r2);
// and independent...
r1.setItemMargin(0.0);
boolean b1 = !r1.equals(r2);
r2.setItemMargin(0.0);
boolean b2 = r1.equals(r2);
return b0 && b1 && b2;
}
/**
* Serialize an instance, restore it, and check for equality.
*/
@Test
public void testSerialization() throws IOException, ClassNotFoundException {
LevelRenderer r1 = new LevelRenderer();
ByteArrayOutputStream buffer = new ByteArrayOutputStream();
ObjectOutput out = new ObjectOutputStream(buffer);
out.writeObject(r1);
out.close();
ObjectInput in = new ObjectInputStream(
new ByteArrayInputStream(buffer.toByteArray())
);
LevelRenderer r2 = (LevelRenderer) in.readObject();
in.close();
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).
*/
@Test
public void testDrawWithNullInfo() {
DefaultCategoryDataset dataset = new DefaultCategoryDataset();
dataset.addValue(1.0, "S1", "C1");
CategoryPlot plot = new CategoryPlot(dataset,
new CategoryAxis("Category"), new NumberAxis("Value"),
new LevelRenderer());
JFreeChart chart = new JFreeChart(plot);
/* BufferedImage image = */ chart.createBufferedImage(300, 200,
null);
}
/**
* A check for the datasetIndex and seriesIndex fields in the LegendItem
* returned by the getLegendItem() method.
*/
@Test
public void testGetLegendItemSeriesIndex() {
DefaultCategoryDataset dataset0 = new DefaultCategoryDataset();
dataset0.addValue(21.0, "R1", "C1");
dataset0.addValue(22.0, "R2", "C1");
DefaultCategoryDataset dataset1 = new DefaultCategoryDataset();
dataset1.addValue(23.0, "R3", "C1");
dataset1.addValue(24.0, "R4", "C1");
dataset1.addValue(25.0, "R5", "C1");
LevelRenderer r = new LevelRenderer();
CategoryPlot plot = new CategoryPlot(dataset0, new CategoryAxis("x"),
new NumberAxis("y"), r);
plot.setDataset(1, dataset1);
/*JFreeChart chart =*/ new JFreeChart(plot);
LegendItem li = r.getLegendItem(1, 2);
assertEquals("R5", li.getLabel());
assertEquals(1, li.getDatasetIndex());
assertEquals(2, li.getSeriesIndex());
}
}