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jfreechart example source code file (StackedXYAreaRendererTests.java)

This example jfreechart source code file (StackedXYAreaRendererTests.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, defaulttablexydataset, io, jfreechart, numberaxis, numberaxis, series, stackedxyarearenderer, stackedxyarearenderer, stackedxyarearenderertests, x, xyplot, xyplot, xyseries, xyseries, y

The jfreechart StackedXYAreaRendererTests.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.]
 *
 * -------------------------------
 * StackedXYAreaRendererTests.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);
 * 06-Jan-2005 : Renamed StackedAreaXYRendererTests -->
 *               StackedXYAreaRendererTests, improved testEquals() method,
 *               added check for auto range calculation (DG);
 * 10-Nov-2006 : Added testBug1593156() (DG);
 * 22-Apr-2008 : Added testPublicCloneable (DG);
 *
 */

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

import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.GradientPaint;
import java.awt.Stroke;
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.axis.NumberAxis;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.plot.XYPlot;
import org.jfree.chart.renderer.xy.StackedXYAreaRenderer;
import org.jfree.chart.renderer.xy.XYAreaRenderer;
import org.jfree.data.Range;
import org.jfree.data.xy.DefaultTableXYDataset;
import org.jfree.data.xy.TableXYDataset;
import org.jfree.data.xy.XYSeries;
import org.jfree.util.PublicCloneable;

/**
 * Tests for the {@link StackedXYAreaRenderer} class.
 */
public class StackedXYAreaRendererTests extends TestCase {

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

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

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

        r1.setShapePaint(new GradientPaint(1.0f, 2.0f, Color.yellow,
                3.0f, 4.0f, Color.green));
        assertFalse(r1.equals(r2));
        r2.setShapePaint(new GradientPaint(1.0f, 2.0f, Color.yellow,
                3.0f, 4.0f, Color.green));
        assertTrue(r1.equals(r2));

        Stroke s = new BasicStroke(1.23f);
        r1.setShapeStroke(s);
        assertFalse(r1.equals(r2));
        r2.setShapeStroke(s);
        assertTrue(r1.equals(r2));
    }

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

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

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

    /**
     * Serialize an instance, restore it, and check for equality.
     */
    public void testSerialization() {
        StackedXYAreaRenderer r1 = new StackedXYAreaRenderer();
        r1.setShapePaint(Color.red);
        r1.setShapeStroke(new BasicStroke(1.23f));
        StackedXYAreaRenderer 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 = (StackedXYAreaRenderer) in.readObject();
            in.close();
        }
        catch (Exception e) {
            e.printStackTrace();
        }
        assertEquals(r1, r2);
    }

    /**
     * Check that the renderer is calculating the range bounds correctly.
     */
    public void testFindRangeBounds() {
        TableXYDataset dataset
                = RendererXYPackageTests.createTestTableXYDataset();
        JFreeChart chart = ChartFactory.createStackedXYAreaChart(
                "Test Chart", "X", "Y", dataset, PlotOrientation.VERTICAL,
                false, false, false);
        XYPlot plot = (XYPlot) chart.getPlot();
        NumberAxis rangeAxis = (NumberAxis) plot.getRangeAxis();
        Range bounds = rangeAxis.getRange();
        assertTrue(bounds.contains(6.0));
        assertTrue(bounds.contains(8.0));
    }

    /**
     * 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 StackedXYAreaRenderer());
            JFreeChart chart = new JFreeChart(plot);
            /* BufferedImage image = */ chart.createBufferedImage(300, 200,
                    null);
            success = true;
        }
        catch (NullPointerException e) {
            e.printStackTrace();
            success = false;
        }
        assertTrue(success);
    }

    /**
     * A test for bug 1593156.
     */
    public void testBug1593156() {
        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);
            StackedXYAreaRenderer renderer = new StackedXYAreaRenderer(
                    XYAreaRenderer.LINES);
            XYPlot plot = new XYPlot(dataset,
                    new NumberAxis("X"), new NumberAxis("Y"),
                    renderer);
            JFreeChart chart = new JFreeChart(plot);
            /* BufferedImage image = */ chart.createBufferedImage(300, 200,
                    null);
            success = true;
        }
        catch (NullPointerException e) {
            e.printStackTrace();
            success = false;
        }
        assertTrue(success);
    }

}

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