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jfreechart example source code file (XYBarRendererTests.java)

This example jfreechart source code file (XYBarRendererTests.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, epsilon, geometry, io, itemlabelposition, itemlabelposition, numberaxis, objectinput, s5, xybarrenderer, xybarrenderer, xyplot, xyseries, xyseries, xyseriescollection, xyseriescollection

The jfreechart XYBarRendererTests.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.]
 *
 * -----------------------
 * XYBarRendererTests.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);
 * 09-Feb-2007 : Added to testCloning() (DG);
 * 17-May-2007 : Added testGetLegendItemSeriesIndex() (DG);
 * 22-Apr-2008 : Added testPublicCloneable (DG);
 * 19-Jun-2008 : Added testFindRangeBounds() (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.ChartFactory;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.LegendItem;
import org.jfree.chart.axis.NumberAxis;
import org.jfree.chart.labels.ItemLabelPosition;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.plot.XYPlot;
import org.jfree.chart.renderer.xy.GradientXYBarPainter;
import org.jfree.chart.renderer.xy.XYBarRenderer;
import org.jfree.data.Range;
import org.jfree.data.xy.DefaultIntervalXYDataset;
import org.jfree.data.xy.XYBarDataset;
import org.jfree.data.xy.XYSeries;
import org.jfree.data.xy.XYSeriesCollection;
import org.jfree.ui.GradientPaintTransformType;
import org.jfree.ui.StandardGradientPaintTransformer;
import org.jfree.util.PublicCloneable;

/**
 * Tests for the {@link XYBarRenderer} class.
 */
public class XYBarRendererTests extends TestCase {

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

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

    /**
     * Test that the equals() method distinguishes all fields.
     */
    public void testEquals() {

        // default instances
        XYBarRenderer r1 = new XYBarRenderer();
        XYBarRenderer r2 = new XYBarRenderer();
        assertTrue(r1.equals(r2));
        assertTrue(r2.equals(r1));

        // setBase()
        r1.setBase(1.0);
        assertFalse(r1.equals(r2));
        r2.setBase(1.0);
        assertTrue(r1.equals(r2));

        // setUseYInterval
        r1.setUseYInterval(!r1.getUseYInterval());
        assertFalse(r1.equals(r2));
        r2.setUseYInterval(!r2.getUseYInterval());
        assertTrue(r1.equals(r2));

        // setMargin()
        r1.setMargin(0.10);
        assertFalse(r1.equals(r2));
        r2.setMargin(0.10);
        assertTrue(r1.equals(r2));

        // setDrawBarOutline()
        r1.setDrawBarOutline(!r1.isDrawBarOutline());
        assertFalse(r1.equals(r2));
        r2.setDrawBarOutline(!r2.isDrawBarOutline());
        assertTrue(r1.equals(r2));

        // setGradientPaintTransformer()
        r1.setGradientPaintTransformer(new StandardGradientPaintTransformer(
                GradientPaintTransformType.CENTER_HORIZONTAL));
        assertFalse(r1.equals(r2));
        r2.setGradientPaintTransformer(new StandardGradientPaintTransformer(
                GradientPaintTransformType.CENTER_HORIZONTAL));
        assertTrue(r1.equals(r2));

        // legendBar
        r1.setLegendBar(new Rectangle2D.Double(1.0, 2.0, 3.0, 4.0));
        assertFalse(r1.equals(r2));
        r2.setLegendBar(new Rectangle2D.Double(1.0, 2.0, 3.0, 4.0));
        assertTrue(r1.equals(r2));

        // positiveItemLabelFallbackPosition
        r1.setPositiveItemLabelPositionFallback(new ItemLabelPosition());
        assertFalse(r1.equals(r2));
        r2.setPositiveItemLabelPositionFallback(new ItemLabelPosition());
        assertTrue(r1.equals(r2));

        // negativeItemLabelFallbackPosition
        r1.setNegativeItemLabelPositionFallback(new ItemLabelPosition());
        assertFalse(r1.equals(r2));
        r2.setNegativeItemLabelPositionFallback(new ItemLabelPosition());
        assertTrue(r1.equals(r2));

        // barPainter
        r1.setBarPainter(new GradientXYBarPainter(0.11, 0.22, 0.33));
        assertFalse(r1.equals(r2));
        r2.setBarPainter(new GradientXYBarPainter(0.11, 0.22, 0.33));
        assertTrue(r1.equals(r2));

        // shadowsVisible
        r1.setShadowVisible(false);
        assertFalse(r1.equals(r2));
        r2.setShadowVisible(false);
        assertTrue(r1.equals(r2));

        // shadowXOffset
        r1.setShadowXOffset(3.3);
        assertFalse(r1.equals(r2));
        r2.setShadowXOffset(3.3);
        assertTrue(r1.equals(r2));

        // shadowYOffset
        r1.setShadowYOffset(3.3);
        assertFalse(r1.equals(r2));
        r2.setShadowYOffset(3.3);
        assertTrue(r1.equals(r2));

    }

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

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

        // check independence
        rect.setRect(4.0, 3.0, 2.0, 1.0);
        assertFalse(r1.equals(r2));
        r2.setLegendBar(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() {
        XYBarRenderer r1 = new XYBarRenderer();
        assertTrue(r1 instanceof PublicCloneable);
    }

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

        XYBarRenderer r1 = new XYBarRenderer();
        XYBarRenderer 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 = (XYBarRenderer) in.readObject();
            in.close();
        }
        catch (Exception e) {
            e.printStackTrace();
        }
        assertEquals(r1, r2);

    }

    /**
     * Serialize an instance, restore it, and check for equality.
     */
    public void testSerialization2() {

        XYBarRenderer r1 = new XYBarRenderer();
        r1.setPositiveItemLabelPositionFallback(new ItemLabelPosition());
        XYBarRenderer 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 = (XYBarRenderer) in.readObject();
            in.close();
        }
        catch (Exception e) {
            e.printStackTrace();
        }
        assertEquals(r1, r2);

    }

    /**
     * Check that the renderer is calculating the domain bounds correctly.
     */
    public void testFindDomainBounds() {
        XYSeriesCollection dataset
                = RendererXYPackageTests.createTestXYSeriesCollection();
        JFreeChart chart = ChartFactory.createXYBarChart("Test Chart", "X",
                false, "Y", dataset, PlotOrientation.VERTICAL, false, false,
                false);
        XYPlot plot = (XYPlot) chart.getPlot();
        NumberAxis domainAxis = (NumberAxis) plot.getDomainAxis();
        domainAxis.setAutoRangeIncludesZero(false);
        Range bounds = domainAxis.getRange();
        assertFalse(bounds.contains(0.3));
        assertTrue(bounds.contains(0.5));
        assertTrue(bounds.contains(2.5));
        assertFalse(bounds.contains(2.8));
    }

    private static final double EPSILON = 0.0000000001;

    /**
     * A simple test for the findRangeBounds() method.
     */
    public void testFindRangeBounds() {
        DefaultIntervalXYDataset dataset = new DefaultIntervalXYDataset();
        double[] x = {1.0, 2.0, 3.0, 4.0};
        double[] startx = {0.9, 1.8, 2.7, 3.6};
        double[] endx = {1.1, 2.2, 3.3, 4.4};
        double[] y = {1.0, 2.0, 3.0, 4.0};
        double[] starty = {0.9, 1.8, 2.7, 3.6};
        double[] endy = {1.1, 2.2, 3.3, 4.4};
        double[][] data = new double[][] {x, startx, endx, y, starty, endy};
        dataset.addSeries("Series 1", data);
        XYBarRenderer renderer = new XYBarRenderer();
        renderer.setUseYInterval(true);
        Range r = renderer.findRangeBounds(dataset);
        assertEquals(0.9, r.getLowerBound(), EPSILON);
        assertEquals(4.4, r.getUpperBound(), EPSILON);

        renderer.setUseYInterval(false);
        r = renderer.findRangeBounds(dataset);
        assertEquals(1.0, r.getLowerBound(), EPSILON);
        assertEquals(4.0, r.getUpperBound(), EPSILON);
    }

    /**
     * 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);

        XYBarRenderer r = new XYBarRenderer();
        XYPlot plot = new XYPlot(new XYBarDataset(d1, 1.0), new NumberAxis("x"),
                new NumberAxis("y"), r);
        plot.setDataset(1, new XYBarDataset(d2, 2.0));
        /*JFreeChart chart =*/ new JFreeChart(plot);
        LegendItem li = r.getLegendItem(1, 2);
        assertEquals("S5", li.getLabel());
        assertEquals(1, li.getDatasetIndex());
        assertEquals(2, li.getSeriesIndex());
    }


}

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