xybubblerenderertests.java

JFreeChart是做统计图表的,、混合图、甘特图以及一些仪表盘

/* ===========================================================
 * 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.]
 *
 * --------------------------
 * XYBubbleRendererTests.java
 * --------------------------
 * (C) Copyright 2003-2007, by Object Refinery Limited and Contributors.
 *
 * Original Author:  David Gilbert (for Object Refinery Limited);
 * Contributor(s):   -;
 *
 * Changes
 * -------
 * 25-Mar-2003 : Version 1 (DG);
 * 24-Jan-2007 : Added more checks to testEquals() (DG);
 * 17-May-2007 : Added testGetLegendItemSeriesIndex() (DG);
 *
 */

package org.jfree.chart.renderer.xy.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.LegendItem;
import org.jfree.chart.axis.NumberAxis;
import org.jfree.chart.plot.XYPlot;
import org.jfree.chart.renderer.xy.XYBubbleRenderer;
import org.jfree.data.xy.DefaultXYZDataset;

/**
 * Tests for the {@link XYBubbleRenderer} class.
 */
public class XYBubbleRendererTests extends TestCase {

    /**
     * Returns the tests as a test suite.
     *
     * @return The test suite.
     */
    public static Test suite() {
        return new TestSuite(XYBubbleRendererTests.class);
    }

    /**
     * Constructs a new set of tests.
     *
     * @param name  the name of the tests.
     */
    public XYBubbleRendererTests(String name) {
        super(name);
    }

    /**
     * Check that the equals() method distinguishes all fields.
     */
    public void testEquals() {
        XYBubbleRenderer r1 = new XYBubbleRenderer();
        XYBubbleRenderer r2 = new XYBubbleRenderer();
        assertEquals(r1, r2);
        
        r1 = new XYBubbleRenderer(XYBubbleRenderer.SCALE_ON_RANGE_AXIS);
        assertFalse(r1.equals(r2));
        r2 = new XYBubbleRenderer(XYBubbleRenderer.SCALE_ON_RANGE_AXIS);
        assertTrue(r1.equals(r2));
    }

    /**
     * Two objects that are equal are required to return the same hashCode. 
     */
    public void testHashcode() {
        XYBubbleRenderer r1 = new XYBubbleRenderer();
        XYBubbleRenderer r2 = new XYBubbleRenderer();
        assertTrue(r1.equals(r2));
        int h1 = r1.hashCode();
        int h2 = r2.hashCode();
        assertEquals(h1, h2);
    }
    
    /**
     * Confirm that cloning works.
     */
    public void testCloning() {
        XYBubbleRenderer r1 = new XYBubbleRenderer();
        XYBubbleRenderer r2 = null;
        try {
            r2 = (XYBubbleRenderer) r1.clone();
        }
        catch (CloneNotSupportedException e) {
            e.printStackTrace();
        }
        assertTrue(r1 != r2);
        assertTrue(r1.getClass() == r2.getClass());
        assertTrue(r1.equals(r2));
    }

    /**
     * Serialize an instance, restore it, and check for equality.
     */
    public void testSerialization() {
        XYBubbleRenderer r1 = new XYBubbleRenderer();
        XYBubbleRenderer 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 = (XYBubbleRenderer) 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() {
        DefaultXYZDataset d1 = new DefaultXYZDataset(); 
        double[] x = {2.1, 2.3, 2.3, 2.2, 2.2, 1.8, 1.8, 1.9, 2.3, 3.8};
        double[] y = {14.1, 11.1, 10.0, 8.8, 8.7, 8.4, 5.4, 4.1, 4.1, 25};
        double[] z = {2.4, 2.7, 2.7, 2.2, 2.2, 2.2, 2.1, 2.2, 1.6, 4};
        double[][] s1 = new double[][] { x, y, z };
        d1.addSeries("S1", s1);
        x = new double[] {2.1};
        y = new double[] {14.1};
        z = new double[] {2.4};
        double[][] s2 = new double[][] { x, y, z };
        d1.addSeries("S2", s2);
        
        DefaultXYZDataset d2 = new DefaultXYZDataset(); 
        x = new double[] {2.1};
        y = new double[] {14.1};
        z = new double[] {2.4};
        double[][] s3 = new double[][] { x, y, z };
        d2.addSeries("S3", s3);
        x = new double[] {2.1};
        y = new double[] {14.1};
        z = new double[] {2.4};
        double[][] s4 = new double[][] { x, y, z };
        d2.addSeries("S4", s4);
        x = new double[] {2.1};
        y = new double[] {14.1};
        z = new double[] {2.4};
        double[][] s5 = new double[][] { x, y, z };
        d2.addSeries("S5", s5);

        XYBubbleRenderer r = new XYBubbleRenderer();
        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());
    }

}