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jfreechart example source code file (BoxAndWhiskerRendererTests.java)

This example jfreechart source code file (BoxAndWhiskerRendererTests.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, boxandwhiskerrenderer, boxandwhiskerrenderer, c1, categoryaxis, categoryplot, categoryplot, chartrenderinginfo, defaultboxandwhiskercategorydataset, defaultboxandwhiskercategorydataset, exception, geometry, image, io, jfreechart, jfreechart, numberaxis, util, value

The jfreechart BoxAndWhiskerRendererTests.java source code

/* ===========================================================
 * JFreeChart : a free chart library for the Java(tm) platform
 * ===========================================================
 *
 * (C) Copyright 2000-2009, 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.]
 *
 * -------------------------------
 * BoxAndWhiskerRendererTests.java
 * -------------------------------
 * (C) Copyright 2003-2009, by Object Refinery Limited and Contributors.
 *
 * Original Author:  David Gilbert (for Object Refinery Limited);
 * Contributor(s):   -;
 *
 * Changes
 * -------
 * 22-Oct-2003 : Version 1 (DG);
 * 23-Apr-2004 : Extended testEquals() method (DG);
 * 12-Oct-2006 : Added new checks for bug 1572478 (DG);
 * 11-May-2007 : Added testGetLegendItem() (DG);
 * 17-May-2007 : Added testGetLegendItemSeriesIndex() (DG);
 * 08-Oct-2007 : Added tests for null items in dataset (DG);
 * 15-Jan-2008 : Updated testEquals() (DG);
 * 23-Apr-2008 : Added testPublicCloneable() (DG);
 * 21-Jan-2009 : Updated testEquals() for new fields (DG);
 *
 */

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

import java.awt.Color;
import java.awt.GradientPaint;
import java.awt.Graphics2D;
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 java.util.ArrayList;
import java.util.List;

import junit.framework.Test;
import junit.framework.TestCase;
import junit.framework.TestSuite;

import org.jfree.chart.ChartRenderingInfo;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.LegendItem;
import org.jfree.chart.axis.CategoryAxis;
import org.jfree.chart.axis.NumberAxis;
import org.jfree.chart.plot.CategoryPlot;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.renderer.category.BoxAndWhiskerRenderer;
import org.jfree.data.category.DefaultCategoryDataset;
import org.jfree.data.statistics.BoxAndWhiskerItem;
import org.jfree.data.statistics.DefaultBoxAndWhiskerCategoryDataset;
import org.jfree.util.PublicCloneable;

/**
 * Tests for the {@link BoxAndWhiskerRenderer} class.
 */
public class BoxAndWhiskerRendererTests extends TestCase {

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

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

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

        r1.setArtifactPaint(new GradientPaint(1.0f, 2.0f, Color.yellow,
                3.0f, 4.0f, Color.blue));
        assertFalse(r1.equals(r2));
        r2.setArtifactPaint(new GradientPaint(1.0f, 2.0f, Color.yellow,
                3.0f, 4.0f, Color.blue));
        assertEquals(r1, r2);

        r1.setFillBox(!r1.getFillBox());
        assertFalse(r1.equals(r2));
        r2.setFillBox(!r2.getFillBox());
        assertEquals(r1, r2);

        r1.setItemMargin(0.11);
        assertFalse(r1.equals(r2));
        r2.setItemMargin(0.11);
        assertEquals(r1, r2);

        r1.setMaximumBarWidth(0.99);
        assertFalse(r1.equals(r2));
        r2.setMaximumBarWidth(0.99);
        assertTrue(r1.equals(r2));

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

        r1.setMedianVisible(false);
        assertFalse(r1.equals(r2));
        r2.setMedianVisible(false);
        assertTrue(r1.equals(r2));
    }

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

    /**
     * Confirm that cloning works.
     */
    public void testCloning() {
        BoxAndWhiskerRenderer r1 = new BoxAndWhiskerRenderer();
        BoxAndWhiskerRenderer r2 = null;
        try {
            r2 = (BoxAndWhiskerRenderer) r1.clone();
        }
        catch (CloneNotSupportedException e) {
            e.printStackTrace();
        }
        assertTrue(r1 != r2);
        assertTrue(r1.getClass() == r2.getClass());
        assertTrue(r1.equals(r2));
    }

    /**
     * Check that this class implements PublicCloneable.
     */
    public void testPublicCloneable() {
        BoxAndWhiskerRenderer r1 = new BoxAndWhiskerRenderer();
        assertTrue(r1 instanceof PublicCloneable);
    }

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

        BoxAndWhiskerRenderer r1 = new BoxAndWhiskerRenderer();
        BoxAndWhiskerRenderer 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 = (BoxAndWhiskerRenderer) in.readObject();
            in.close();
        }
        catch (Exception e) {
            e.printStackTrace();
        }
        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 {
            DefaultBoxAndWhiskerCategoryDataset dataset
                = new DefaultBoxAndWhiskerCategoryDataset();
            dataset.add(new BoxAndWhiskerItem(new Double(1.0), new Double(2.0),
                    new Double(0.0), new Double(4.0), new Double(0.5),
                    new Double(4.5), new Double(-0.5), new Double(5.5),
                    null), "S1", "C1");
            CategoryPlot plot = new CategoryPlot(dataset,
                    new CategoryAxis("Category"), new NumberAxis("Value"),
                    new BoxAndWhiskerRenderer());
            JFreeChart chart = new JFreeChart(plot);
            /* BufferedImage image = */ chart.createBufferedImage(300, 200,
                    null);
            success = true;
        }
        catch (NullPointerException e) {
            success = false;
        }
        assertTrue(success);
    }

    /**
     * A check for bug 1572478 (for the vertical orientation).
     */
    public void testBug1572478Vertical() {
        DefaultBoxAndWhiskerCategoryDataset dataset
                = new DefaultBoxAndWhiskerCategoryDataset() {

            public Number getQ1Value(int row, int column) {
                return null;
            }

            public Number getQ1Value(Comparable rowKey, Comparable columnKey) {
                return null;
            }
        };
        List values = new ArrayList();
        values.add(new Double(1.0));
        values.add(new Double(10.0));
        values.add(new Double(100.0));
        dataset.add(values, "row", "column");
        CategoryPlot plot = new CategoryPlot(dataset, new CategoryAxis("x"),
                new NumberAxis("y"), new BoxAndWhiskerRenderer());
        JFreeChart chart = new JFreeChart(plot);
        boolean success = false;

        try {
            BufferedImage image = new BufferedImage(200 , 100,
                    BufferedImage.TYPE_INT_RGB);
            Graphics2D g2 = image.createGraphics();
            chart.draw(g2, new Rectangle2D.Double(0, 0, 200, 100), null,
                    new ChartRenderingInfo());
            g2.dispose();
            success = true;
        }
        catch (Exception e) {
            success = false;
        }

        assertTrue(success);

    }

    /**
     * A check for bug 1572478 (for the horizontal orientation).
     */
    public void testBug1572478Horizontal() {
        DefaultBoxAndWhiskerCategoryDataset dataset
                = new DefaultBoxAndWhiskerCategoryDataset() {

            public Number getQ1Value(int row, int column) {
                return null;
            }

            public Number getQ1Value(Comparable rowKey, Comparable columnKey) {
                return null;
            }
        };
        List values = new ArrayList();
        values.add(new Double(1.0));
        values.add(new Double(10.0));
        values.add(new Double(100.0));
        dataset.add(values, "row", "column");
        CategoryPlot plot = new CategoryPlot(dataset, new CategoryAxis("x"),
                new NumberAxis("y"), new BoxAndWhiskerRenderer());
        plot.setOrientation(PlotOrientation.HORIZONTAL);
        JFreeChart chart = new JFreeChart(plot);
        boolean success = false;

        try {
            BufferedImage image = new BufferedImage(200 , 100,
                    BufferedImage.TYPE_INT_RGB);
            Graphics2D g2 = image.createGraphics();
            chart.draw(g2, new Rectangle2D.Double(0, 0, 200, 100), null,
                    new ChartRenderingInfo());
            g2.dispose();
            success = true;
        }
        catch (Exception e) {
            success = false;
        }

        assertTrue(success);

    }

    /**
     * Some checks for the getLegendItem() method.
     */
    public void testGetLegendItem() {
        DefaultBoxAndWhiskerCategoryDataset dataset
                = new DefaultBoxAndWhiskerCategoryDataset();
        List values = new ArrayList();
        values.add(new Double(1.10));
        values.add(new Double(1.45));
        values.add(new Double(1.33));
        values.add(new Double(1.23));
        dataset.add(values, "R1", "C1");
        BoxAndWhiskerRenderer r = new BoxAndWhiskerRenderer();
        CategoryPlot plot = new CategoryPlot(dataset, new CategoryAxis("x"),
                new NumberAxis("y"), r);
        /*JFreeChart chart =*/ new JFreeChart(plot);
        LegendItem li = r.getLegendItem(0, 0);
        assertNotNull(li);
        r.setSeriesVisibleInLegend(0, Boolean.FALSE);
        li = r.getLegendItem(0, 0);
        assertNull(li);
    }

    /**
     * A check for the datasetIndex and seriesIndex fields in the LegendItem
     * returned by the getLegendItem() method.
     */
    public void testGetLegendItemSeriesIndex() {
        DefaultCategoryDataset dataset0 = new DefaultCategoryDataset();
        dataset0.addValue(21.0, "R1", "C1");
        dataset0.addValue(22.0, "R2", "C1");
        DefaultCategoryDataset dataset1 = new DefaultCategoryDataset();
        dataset1.addValue(23.0, "R3", "C1");
        dataset1.addValue(24.0, "R4", "C1");
        dataset1.addValue(25.0, "R5", "C1");
        BoxAndWhiskerRenderer r = new BoxAndWhiskerRenderer();
        CategoryPlot plot = new CategoryPlot(dataset0, new CategoryAxis("x"),
                new NumberAxis("y"), r);
        plot.setDataset(1, dataset1);
        /*JFreeChart chart =*/ new JFreeChart(plot);
        LegendItem li = r.getLegendItem(1, 2);
        assertEquals("R5", li.getLabel());
        assertEquals(1, li.getDatasetIndex());
        assertEquals(2, li.getSeriesIndex());
    }

    /**
     * Draws a chart where the dataset contains a null mean value.
     */
    public void testDrawWithNullMean() {
        boolean success = false;
        try {
            DefaultBoxAndWhiskerCategoryDataset dataset
                    = new DefaultBoxAndWhiskerCategoryDataset();
            dataset.add(new BoxAndWhiskerItem(null, new Double(2.0),
                    new Double(0.0), new Double(4.0), new Double(0.5),
                    new Double(4.5), new Double(-0.5), new Double(5.5),
                    null), "S1", "C1");
            CategoryPlot plot = new CategoryPlot(dataset,
                    new CategoryAxis("Category"), new NumberAxis("Value"),
                    new BoxAndWhiskerRenderer());
            ChartRenderingInfo info = new ChartRenderingInfo();
            JFreeChart chart = new JFreeChart(plot);
            /* BufferedImage image = */ chart.createBufferedImage(300, 200,
                    info);
            success = true;
        }
        catch (Exception e) {
            success = false;
        }
        assertTrue(success);
    }

    /**
     * Draws a chart where the dataset contains a null median value.
     */
    public void testDrawWithNullMedian() {
        boolean success = false;
        try {
            DefaultBoxAndWhiskerCategoryDataset dataset
                    = new DefaultBoxAndWhiskerCategoryDataset();
            dataset.add(new BoxAndWhiskerItem(new Double(1.0), null,
                    new Double(0.0), new Double(4.0), new Double(0.5),
                    new Double(4.5), new Double(-0.5), new Double(5.5),
                    null), "S1", "C1");
            CategoryPlot plot = new CategoryPlot(dataset,
                    new CategoryAxis("Category"), new NumberAxis("Value"),
                    new BoxAndWhiskerRenderer());
            ChartRenderingInfo info = new ChartRenderingInfo();
            JFreeChart chart = new JFreeChart(plot);
            /* BufferedImage image = */ chart.createBufferedImage(300, 200,
                    info);
            success = true;
        }
        catch (Exception e) {
            success = false;
        }
        assertTrue(success);
    }

    /**
     * Draws a chart where the dataset contains a null Q1 value.
     */
    public void testDrawWithNullQ1() {
        boolean success = false;
        try {
            DefaultBoxAndWhiskerCategoryDataset dataset
                    = new DefaultBoxAndWhiskerCategoryDataset();
            dataset.add(new BoxAndWhiskerItem(new Double(1.0), new Double(2.0),
                    null, new Double(4.0), new Double(0.5),
                    new Double(4.5), new Double(-0.5), new Double(5.5),
                    null), "S1", "C1");
            CategoryPlot plot = new CategoryPlot(dataset,
                    new CategoryAxis("Category"), new NumberAxis("Value"),
                    new BoxAndWhiskerRenderer());
            ChartRenderingInfo info = new ChartRenderingInfo();
            JFreeChart chart = new JFreeChart(plot);
            /* BufferedImage image = */ chart.createBufferedImage(300, 200,
                    info);
            success = true;
        }
        catch (Exception e) {
            success = false;
        }
        assertTrue(success);
    }

    /**
     * Draws a chart where the dataset contains a null Q3 value.
     */
    public void testDrawWithNullQ3() {
        boolean success = false;
        try {
            DefaultBoxAndWhiskerCategoryDataset dataset
                    = new DefaultBoxAndWhiskerCategoryDataset();
            dataset.add(new BoxAndWhiskerItem(new Double(1.0), new Double(2.0),
                    new Double(3.0), null, new Double(0.5),
                    new Double(4.5), new Double(-0.5), new Double(5.5),
                    null), "S1", "C1");
            CategoryPlot plot = new CategoryPlot(dataset,
                    new CategoryAxis("Category"), new NumberAxis("Value"),
                    new BoxAndWhiskerRenderer());
            ChartRenderingInfo info = new ChartRenderingInfo();
            JFreeChart chart = new JFreeChart(plot);
            /* BufferedImage image = */ chart.createBufferedImage(300, 200,
                    info);
            success = true;
        }
        catch (Exception e) {
            success = false;
        }
        assertTrue(success);
    }

    /**
     * Draws a chart where the dataset contains a null min regular value.
     */
    public void testDrawWithNullMinRegular() {
        boolean success = false;
        try {
            DefaultBoxAndWhiskerCategoryDataset dataset
                    = new DefaultBoxAndWhiskerCategoryDataset();
            dataset.add(new BoxAndWhiskerItem(new Double(1.0), new Double(2.0),
                    new Double(3.0), new Double(4.0), null,
                    new Double(4.5), new Double(-0.5), new Double(5.5),
                    null), "S1", "C1");
            CategoryPlot plot = new CategoryPlot(dataset,
                    new CategoryAxis("Category"), new NumberAxis("Value"),
                    new BoxAndWhiskerRenderer());
            ChartRenderingInfo info = new ChartRenderingInfo();
            JFreeChart chart = new JFreeChart(plot);
            /* BufferedImage image = */ chart.createBufferedImage(300, 200,
                    info);
            success = true;
        }
        catch (Exception e) {
            success = false;
        }
        assertTrue(success);
    }

    /**
     * Draws a chart where the dataset contains a null max regular value.
     */
    public void testDrawWithNullMaxRegular() {
        boolean success = false;
        try {
            DefaultBoxAndWhiskerCategoryDataset dataset
                    = new DefaultBoxAndWhiskerCategoryDataset();
            dataset.add(new BoxAndWhiskerItem(new Double(1.0), new Double(2.0),
                    new Double(3.0), new Double(4.0), new Double(0.5),
                    null, new Double(-0.5), new Double(5.5),
                    null), "S1", "C1");
            CategoryPlot plot = new CategoryPlot(dataset,
                    new CategoryAxis("Category"), new NumberAxis("Value"),
                    new BoxAndWhiskerRenderer());
            ChartRenderingInfo info = new ChartRenderingInfo();
            JFreeChart chart = new JFreeChart(plot);
            /* BufferedImage image = */ chart.createBufferedImage(300, 200,
                    info);
            success = true;
        }
        catch (Exception e) {
            e.printStackTrace();
            success = false;
        }
        assertTrue(success);
    }

    /**
     * Draws a chart where the dataset contains a null min outlier value.
     */
    public void testDrawWithNullMinOutlier() {
        boolean success = false;
        try {
            DefaultBoxAndWhiskerCategoryDataset dataset
                    = new DefaultBoxAndWhiskerCategoryDataset();
            dataset.add(new BoxAndWhiskerItem(new Double(1.0), new Double(2.0),
                    new Double(3.0), new Double(4.0), new Double(0.5),
                    new Double(4.5), null, new Double(5.5),
                    null), "S1", "C1");
            CategoryPlot plot = new CategoryPlot(dataset,
                    new CategoryAxis("Category"), new NumberAxis("Value"),
                    new BoxAndWhiskerRenderer());
            ChartRenderingInfo info = new ChartRenderingInfo();
            JFreeChart chart = new JFreeChart(plot);
            /* BufferedImage image = */ chart.createBufferedImage(300, 200,
                    info);
            success = true;
        }
        catch (Exception e) {
            success = false;
        }
        assertTrue(success);
    }

    /**
     * Draws a chart where the dataset contains a null max outlier value.
     */
    public void testDrawWithNullMaxOutlier() {
        boolean success = false;
        try {
            DefaultBoxAndWhiskerCategoryDataset dataset
                    = new DefaultBoxAndWhiskerCategoryDataset();
            dataset.add(new BoxAndWhiskerItem(new Double(1.0), new Double(2.0),
                    new Double(3.0), new Double(4.0), new Double(0.5),
                    new Double(4.5), new Double(-0.5), null,
                    new java.util.ArrayList()), "S1", "C1");
            CategoryPlot plot = new CategoryPlot(dataset,
                    new CategoryAxis("Category"), new NumberAxis("Value"),
                    new BoxAndWhiskerRenderer());
            ChartRenderingInfo info = new ChartRenderingInfo();
            JFreeChart chart = new JFreeChart(plot);
            /* BufferedImage image = */ chart.createBufferedImage(300, 200,
                    info);
            success = true;
        }
        catch (Exception e) {
            success = false;
        }
        assertTrue(success);
    }

}

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