/* ===========================================================
 
* 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.]
 
*
 
* --------------------
 
* ScatterPlotTest.java
 
* --------------------
 
* (C) Copyright 2002-2016, by Object Refinery Limited.
 
*
 
* Original Author:
  
David Gilbert (for Object Refinery Limited);
 
* Contributor(s):
   
-;
 
*
 
* Changes:
 
* --------
 
* 11-Jun-2002 : Version 1 (DG);
 
* 17-Oct-2002 : Fixed errors reported by Checkstyle (DG);
 
*
 
*/

package org.jfree.chart;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;

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

import org.jfree.chart.axis.ValueAxis;
import org.jfree.chart.event.ChartChangeEvent;
import org.jfree.chart.event.ChartChangeListener;
import org.jfree.chart.labels.StandardXYToolTipGenerator;
import org.jfree.chart.labels.XYToolTipGenerator;
import org.jfree.chart.plot.XYPlot;
import org.jfree.chart.renderer.xy.XYItemRenderer;
import org.jfree.data.Range;
import org.jfree.data.xy.XYDataset;
import org.jfree.data.xy.XYSeries;
import org.jfree.data.xy.XYSeriesCollection;
import org.junit.Before;
import org.junit.Test;

/**
 
* Tests for a scatter plot.
 
*/
public class ScatterPlotTest {

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

    
/**
     
* Common test setup.
     
*/
    
@Before
    
public void setUp() {
        
this.chart = createChart();
    
}

    
/**
     
* Draws the chart with a null info object to make sure that no exceptions
     
* are thrown (a problem that was occurring at one point).
     
*/

    
@Test
    
public void testDrawWithNullInfo() {
        
try {
            
BufferedImage image = new BufferedImage(200 , 100,
                    
BufferedImage.TYPE_INT_RGB);
            
Graphics2D g2 = image.createGraphics();
            
this.chart.draw(g2, new Rectangle2D.Double(0, 0, 200, 100), null,
                    
null);
            
g2.dispose();
        
}
        
catch (Exception e) {
          
fail("No exception should be thrown.");
        
}
    
}

    
/**
     
* Replaces the dataset and checks that it has changed as expected.
     
*/

    
@Test
    
public void testReplaceDataset() {

        
// create a dataset...
        
XYSeries series1 = new XYSeries("Series 1");
        
series1.add(10.0, 10.0);
        
series1.add(20.0, 20.0);
        
series1.add(30.0, 30.0);
        
XYDataset dataset = new XYSeriesCollection(series1);

        
LocalListener l = new LocalListener();
        
this.chart.addChangeListener(l);
        
XYPlot plot = (XYPlot) this.chart.getPlot();
        
plot.setDataset(dataset);
        
assertEquals(true, l.flag);
        
ValueAxis axis = plot.getRangeAxis();
        
Range range = axis.getRange();
        
assertTrue("Expecting the lower bound of the range to be around 10: "
                   
+ range.getLowerBound(), range.getLowerBound() <= 10);
        
assertTrue("Expecting the upper bound of the range to be around 30: "
                   
+ range.getUpperBound(), range.getUpperBound() >= 30);

    
}

    
/**
     
* Check that setting a tool tip generator for a series does override the
     
* default generator.
     
*/

    
@Test
    
public void testSetSeriesToolTipGenerator() {
        
XYPlot plot = (XYPlot) this.chart.getPlot();
        
XYItemRenderer renderer = plot.getRenderer();
        
StandardXYToolTipGenerator tt = new StandardXYToolTipGenerator();
        
renderer.setSeriesToolTipGenerator(0, tt);
        
XYToolTipGenerator tt2 = renderer.getToolTipGenerator(0, 0);
        
assertTrue(tt2 == tt);
    
}

    
/**
     
* Create a horizontal bar chart with sample data in the range -3 to +3.
     
*
     
* @return The chart.
     
*/

    
private static JFreeChart createChart() {
        
XYSeries series1 = new XYSeries("Series 1");
        
series1.add(1.0, 1.0);
        
series1.add(2.0, 2.0);
        
series1.add(3.0, 3.0);
        
XYDataset dataset = new XYSeriesCollection(series1);
        
return ChartFactory.createScatterPlot("Scatter Plot", "Domain",
                
"Range", dataset);
    
}

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

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

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

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

    
}

}