/* ===========================================================
 
* JFreeChart : a free chart library for the Java(tm) platform
 
* ===========================================================
 
*
 
* (C) Copyright 2000-2016, 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.]
 
*
 
* -------------------
 
* PieChart3DTest.java
 
* -------------------
 
* (C) Copyright 2004-2016, by Object Refinery Limited.
 
*
 
* Original Author:
  
David Gilbert (for Object Refinery Limited);
 
* Contributor(s):
   
-;
 
*
 
* Changes:
 
* --------
 
* 21-May-2004 : Version 1 (DG);
 
*
 
*/

package org.jfree.chart;

import java.awt.Graphics2D;
import java.awt.geom.Rectangle2D;
import java.awt.image.BufferedImage;

import org.jfree.chart.event.ChartChangeEvent;
import org.jfree.chart.event.ChartChangeListener;
import org.jfree.chart.plot.PiePlot;
import org.jfree.data.general.DefaultPieDataset;
import org.jfree.data.general.PieDataset;
import org.junit.Before;
import org.junit.Test;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertEquals;
/**
 
* Tests for a pie chart with a 3D effect.
 
*/
public class PieChart3DTest
  
{

    
/** A chart. */
    
private JFreeChart pieChart;

    
/**
     
* Common test setup.
     
*/
    
@Before
    
public void setUp() {
        
// create a dataset...
        
DefaultPieDataset dataset = new DefaultPieDataset();
        
dataset.setValue("Java", new Double(43.2));
        
dataset.setValue("Visual Basic", new Double(0.0));
        
dataset.setValue("C/C++", new Double(17.5));
        
this.pieChart = createPieChart3D(dataset);
    
}

    
/**
     
* Using a regular pie chart, we replace the dataset with null.
  
Expect to
     
* receive notification of a chart change event, and (of course) the
     
* dataset should be null.
     
*/

    
@Test
    
public void testReplaceDatasetOnPieChart() {
        
LocalListener l = new LocalListener();
        
this.pieChart.addChangeListener(l);
        
PiePlot plot = (PiePlot) this.pieChart.getPlot();
        
plot.setDataset(null);
        
assertEquals(true, l.flag);
        
assertNull(plot.getDataset());
    
}

    
/**
     
* Tests that no exceptions are thrown when there is a {@code null}
     
* value in the dataset.
     
*/

    
@Test
    
public void testNullValueInDataset() {
        
DefaultPieDataset dataset = new DefaultPieDataset();
        
dataset.setValue("Section 1", 10.0);
        
dataset.setValue("Section 2", 11.0);
        
dataset.setValue("Section 3", null);
        
JFreeChart chart = createPieChart3D(dataset);
        
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();
        
//FIXME we should really assert a value here
    
}

    
/**
     
* Creates a pie chart.
     
*
     
* @param dataset
  
the dataset.
     
*
     
* @return The pie chart.
     
*/

    
private static JFreeChart createPieChart3D(PieDataset dataset) {
        
return ChartFactory.createPieChart3D("Pie Chart", dataset);
    
}

    
/**
     
* A chart change listener.
     
*/
    
static class LocalListener implements ChartChangeListener {

        
/** A flag. */
        
private boolean flag;

        
/**
         
* Event handler.
         
*
         
* @param event
  
the event.
         
*/

        
@Override
        
public void chartChanged(ChartChangeEvent event) {
            
this.flag = true;
        
}

    
}

}