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jfreechart example source code file (StandardXYItemRendererTests.java)

This example jfreechart source code file (StandardXYItemRendererTests.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, bufferedimage, chartrenderinginfo, geometry, image, io, numberaxis, numberaxis, s1, s5, standardxyitemrenderer, standardxyitemrenderer, standardxyitemrenderertests, xyplot, xyseries, xyseries, xyseriescollection, xyseriescollection

The jfreechart StandardXYItemRendererTests.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.]
 *
 * --------------------------------
 * StandardXYItemRendererTests.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);
 * 08-Oct-2004 : Strengthened test for equals() method (DG);
 * 14-Mar-2007 : Added new checks in testEquals() and testCloning() (DG);
 * 17-May-2007 : Added testGetLegendItemSeriesIndex() (DG);
 * 08-Jun-2007 : Added testNoDisplayedItem() (DG);
 * 22-Apr-2008 : Added testPublicCloneable (DG);
 *
 */

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

import java.awt.Graphics2D;
import java.awt.geom.Line2D;
import java.awt.geom.Rectangle2D;
import java.awt.image.BufferedImage;
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.ChartFactory;
import org.jfree.chart.ChartRenderingInfo;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.LegendItem;
import org.jfree.chart.axis.NumberAxis;
import org.jfree.chart.entity.EntityCollection;
import org.jfree.chart.entity.XYItemEntity;
import org.jfree.chart.junit.TestUtilities;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.plot.XYPlot;
import org.jfree.chart.renderer.xy.StandardXYItemRenderer;
import org.jfree.data.xy.XYSeries;
import org.jfree.data.xy.XYSeriesCollection;
import org.jfree.util.PublicCloneable;
import org.jfree.util.UnitType;

/**
 * Tests for the {@link StandardXYItemRenderer} class.
 */
public class StandardXYItemRendererTests extends TestCase {

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

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

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

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

        r1.setPlotLines(false);
        assertFalse(r1.equals(r2));
        r2.setPlotLines(false);
        assertTrue(r1.equals(r2));

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

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

        r1.setGapThresholdType(UnitType.ABSOLUTE);
        assertFalse(r1.equals(r2));
        r2.setGapThresholdType(UnitType.ABSOLUTE);
        assertTrue(r1.equals(r2));

        r1.setGapThreshold(1.23);
        assertFalse(r1.equals(r2));
        r2.setGapThreshold(1.23);
        assertTrue(r1.equals(r2));

        r1.setLegendLine(new Line2D.Double(1.0, 2.0, 3.0, 4.0));
        assertFalse(r1.equals(r2));
        r2.setLegendLine(new Line2D.Double(1.0, 2.0, 3.0, 4.0));
        assertTrue(r1.equals(r2));

        r1.setShapesFilled(false);
        assertFalse(r1.equals(r2));
        r2.setShapesFilled(false);
        assertTrue(r1.equals(r2));

        r1.setSeriesShapesFilled(1, Boolean.TRUE);
        assertFalse(r1.equals(r2));
        r2.setSeriesShapesFilled(1, Boolean.TRUE);
        assertTrue(r1.equals(r2));

        r1.setBaseShapesFilled(false);
        assertFalse(r1.equals(r2));
        r2.setBaseShapesFilled(false);
        assertTrue(r1.equals(r2));

        r1.setDrawSeriesLineAsPath(true);
        assertFalse(r1.equals(r2));
        r2.setDrawSeriesLineAsPath(true);
        assertTrue(r1.equals(r2));
    }

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

    /**
     * Confirm that cloning works.
     */
    public void testCloning() {
        StandardXYItemRenderer r1 = new StandardXYItemRenderer();
        Rectangle2D rect1 = new Rectangle2D.Double(1.0, 2.0, 3.0, 4.0);
        r1.setLegendLine(rect1);
        StandardXYItemRenderer r2 = null;
        try {
            r2 = (StandardXYItemRenderer) 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.setLegendLine(new Rectangle2D.Double(4.0, 3.0, 2.0, 1.0));
        assertTrue(r1.equals(r2));

        r1.setSeriesShapesFilled(1, Boolean.TRUE);
        assertFalse(r1.equals(r2));
        r2.setSeriesShapesFilled(1, Boolean.TRUE);
        assertTrue(r1.equals(r2));
    }

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

    /**
     * Serialize an instance, restore it, and check for equality.
     */
    public void testSerialization() {
        StandardXYItemRenderer r1 = new StandardXYItemRenderer();
        StandardXYItemRenderer 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 = (StandardXYItemRenderer) 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() {
        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);

        StandardXYItemRenderer r = new StandardXYItemRenderer();
        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());
    }

    /**
     * A check to ensure that an item that falls outside the plot's data area
     * does NOT generate an item entity.
     */
    public void testNoDisplayedItem() {
        XYSeriesCollection dataset = new XYSeriesCollection();
        XYSeries s1 = new XYSeries("S1");
        s1.add(10.0, 10.0);
        dataset.addSeries(s1);
        JFreeChart chart = ChartFactory.createXYLineChart("Title", "X", "Y",
                dataset, PlotOrientation.VERTICAL, false, true, false);
        XYPlot plot = (XYPlot) chart.getPlot();
        plot.setRenderer(new StandardXYItemRenderer());
        NumberAxis xAxis = (NumberAxis) plot.getDomainAxis();
        xAxis.setRange(0.0, 5.0);
        NumberAxis yAxis = (NumberAxis) plot.getRangeAxis();
        yAxis.setRange(0.0, 5.0);
        BufferedImage image = new BufferedImage(200 , 100,
                BufferedImage.TYPE_INT_RGB);
        Graphics2D g2 = image.createGraphics();
        ChartRenderingInfo info = new ChartRenderingInfo();
        chart.draw(g2, new Rectangle2D.Double(0, 0, 200, 100), null, info);
        g2.dispose();
        EntityCollection ec = info.getEntityCollection();
        assertFalse(TestUtilities.containsInstanceOf(ec.getEntities(),
                XYItemEntity.class));
    }

}

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