jfreechart example source code file (XYAreaRendererTests.java)

This example jfreechart source code file (XYAreaRendererTests.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - jfreechart tags/keywords

awt, bytearrayoutputstream, geometry, io, jfreechart, numberaxis, numberaxis, s5, series, xyarearenderer, xyarearenderer, xyarearenderertests, xyplot, xyplot, xyseries, xyseries, xyseriescollection

The jfreechart XYAreaRendererTests.java source code

/* ===========================================================
 * JFreeChart : a free chart library for the Java(tm) platform
 * ===========================================================
 *
 * (C) Copyright 2000-2008, 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.]
 *
 * ------------------------
 * XYAreaRendererTests.java
 * ------------------------
 * (C) Copyright 2003-2008, by Object Refinery Limited and Contributors.
 *
 * Original Author:  David Gilbert (for Object Refinery Limited);
 * Contributor(s):   -;
 *
 * Changes
 * -------
 * 25-Mar-2003 : Version 1 (DG);
 * 22-Oct-2003 : Added hashCode test (DG);
 * 14-Feb-2007 : Updated testCloning() (DG);
 * 17-May-2007 : Added testGetLegendItemSeriesIndex() (DG);
 * 22-Apr-2008 : Added testPublicCloneable (DG);
 *
 */

package org.jfree.chart.renderer.xy.junit;

import java.awt.geom.Rectangle2D;
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.XYAreaRenderer;
import org.jfree.data.xy.DefaultTableXYDataset;
import org.jfree.data.xy.XYSeries;
import org.jfree.data.xy.XYSeriesCollection;
import org.jfree.util.PublicCloneable;

/**
 * Tests for the {@link XYAreaRenderer} class.
 */
public class XYAreaRendererTests extends TestCase {

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

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

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

        r1 = new XYAreaRenderer(XYAreaRenderer.AREA_AND_SHAPES);
        assertFalse(r1.equals(r2));
        r2 = new XYAreaRenderer(XYAreaRenderer.AREA_AND_SHAPES);
        assertTrue(r1.equals(r2));

        r1 = new XYAreaRenderer(XYAreaRenderer.AREA);
        assertFalse(r1.equals(r2));
        r2 = new XYAreaRenderer(XYAreaRenderer.AREA);
        assertTrue(r1.equals(r2));

        r1 = new XYAreaRenderer(XYAreaRenderer.LINES);
        assertFalse(r1.equals(r2));
        r2 = new XYAreaRenderer(XYAreaRenderer.LINES);
        assertTrue(r1.equals(r2));

        r1 = new XYAreaRenderer(XYAreaRenderer.SHAPES);
        assertFalse(r1.equals(r2));
        r2 = new XYAreaRenderer(XYAreaRenderer.SHAPES);
        assertTrue(r1.equals(r2));

        r1 = new XYAreaRenderer(XYAreaRenderer.SHAPES_AND_LINES);
        assertFalse(r1.equals(r2));
        r2 = new XYAreaRenderer(XYAreaRenderer.SHAPES_AND_LINES);
        assertTrue(r1.equals(r2));

        r1.setOutline(true);
        assertFalse(r1.equals(r2));
        r2.setOutline(true);
        assertTrue(r1.equals(r2));

        r1.setLegendArea(new Rectangle2D.Double(1.0, 2.0, 3.0, 4.0));
        assertFalse(r1.equals(r2));
        r2.setLegendArea(new Rectangle2D.Double(1.0, 2.0, 3.0, 4.0));
        assertTrue(r1.equals(r2));
    }

    /**
     * Two objects that are equal are required to return the same hashCode.
     */
    public void testHashcode() {
        XYAreaRenderer r1 = new XYAreaRenderer();
        XYAreaRenderer r2 = new XYAreaRenderer();
        assertTrue(r1.equals(r2));
        int h1 = r1.hashCode();
        int h2 = r2.hashCode();
        assertEquals(h1, h2);
    }

    /**
     * Confirm that cloning works.
     */
    public void testCloning() {
        XYAreaRenderer r1 = new XYAreaRenderer();
        Rectangle2D rect1 = new Rectangle2D.Double(1.0, 2.0, 3.0, 4.0);
        r1.setLegendArea(rect1);
        XYAreaRenderer r2 = null;
        try {
            r2 = (XYAreaRenderer) r1.clone();
        }
        catch (CloneNotSupportedException e) {
            e.printStackTrace();
        }
        assertTrue(r1 != r2);
        assertTrue(r1.getClass() == r2.getClass());
        assertTrue(r1.equals(r2));

        // check independence
        rect1.setRect(4.0, 3.0, 2.0, 1.0);
        assertFalse(r1.equals(r2));
        r2.setLegendArea(new Rectangle2D.Double(4.0, 3.0, 2.0, 1.0));
        assertTrue(r1.equals(r2));
    }

    /**
     * Verify that this class implements {@link PublicCloneable}.
     */
    public void testPublicCloneable() {
        XYAreaRenderer r1 = new XYAreaRenderer();
        assertTrue(r1 instanceof PublicCloneable);
    }

    /**
     * Serialize an instance, restore it, and check for equality.
     */
    public void testSerialization() {

        XYAreaRenderer r1 = new XYAreaRenderer();
        XYAreaRenderer 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 = (XYAreaRenderer) in.readObject();
            in.close();
        }
        catch (Exception e) {
            System.out.println(e.toString());
        }
        assertEquals(r1, r2);

    }

    /**
     * Draws the chart with a <code>null info object to make sure that
     * no exceptions are thrown (particularly by code in the renderer).
     */
    public void testDrawWithNullInfo() {
        boolean success = false;
        try {
            DefaultTableXYDataset dataset = new DefaultTableXYDataset();

            XYSeries s1 = new XYSeries("Series 1", true, false);
            s1.add(5.0, 5.0);
            s1.add(10.0, 15.5);
            s1.add(15.0, 9.5);
            s1.add(20.0, 7.5);
            dataset.addSeries(s1);

            XYSeries s2 = new XYSeries("Series 2", true, false);
            s2.add(5.0, 5.0);
            s2.add(10.0, 15.5);
            s2.add(15.0, 9.5);
            s2.add(20.0, 3.5);
            dataset.addSeries(s2);
            XYPlot plot = new XYPlot(dataset,
                    new NumberAxis("X"), new NumberAxis("Y"),
                    new XYAreaRenderer());
            JFreeChart chart = new JFreeChart(plot);
            /* BufferedImage image = */ chart.createBufferedImage(300, 200,
                    null);
            success = true;
        }
        catch (NullPointerException e) {
            e.printStackTrace();
            success = false;
        }
        assertTrue(success);
    }

    /**
     * A check for the datasetIndex and seriesIndex fields in the LegendItem
     * returned by the getLegendItem() method.
     */
    public void testGetLegendItemSeriesIndex() {
        XYSeriesCollection d1 = new XYSeriesCollection();
        XYSeries s1 = new XYSeries("S1");
        s1.add(1.0, 1.1);
        XYSeries s2 = new XYSeries("S2");
        s2.add(1.0, 1.1);
        d1.addSeries(s1);
        d1.addSeries(s2);

        XYSeriesCollection d2 = new XYSeriesCollection();
        XYSeries s3 = new XYSeries("S3");
        s3.add(1.0, 1.1);
        XYSeries s4 = new XYSeries("S4");
        s4.add(1.0, 1.1);
        XYSeries s5 = new XYSeries("S5");
        s5.add(1.0, 1.1);
        d2.addSeries(s3);
        d2.addSeries(s4);
        d2.addSeries(s5);

        XYAreaRenderer r = new XYAreaRenderer();
        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());
    }

}