jfreechart example source code file (XYBoxAnnotationTests.java)

This example jfreechart source code file (XYBoxAnnotationTests.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, defaulttablexydataset, gradientpaint, gradientpaint, io, jfreechart, numberaxis, series, xyboxannotation, xyboxannotation, xyboxannotationtests, xyplot, xyplot, xyseries, xyseries

The jfreechart XYBoxAnnotationTests.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.]
 *
 * -------------------------
 * XYBoxAnnotationTests.java
 * -------------------------
 * (C) Copyright 2005-2008, by Object Refinery Limited and Contributors.
 *
 * Original Author:  David Gilbert (for Object Refinery Limited);
 * Contributor(s):   -;
 *
 * Changes
 * -------
 * 19-Jan-2005 : Version 1 (DG);
 * 26-Feb-2008 : Added testDrawWithNullInfo() method (DG);
 * 23-Apr-2008 : Added testPublicCloneable() (DG);
 *
 */

package org.jfree.chart.annotations.junit;

import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.GradientPaint;
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.annotations.XYBoxAnnotation;
import org.jfree.chart.axis.NumberAxis;
import org.jfree.chart.plot.XYPlot;
import org.jfree.chart.renderer.xy.XYLineAndShapeRenderer;
import org.jfree.data.xy.DefaultTableXYDataset;
import org.jfree.data.xy.XYSeries;
import org.jfree.util.PublicCloneable;

/**
 * Some tests for the {@link XYBoxAnnotation} class.
 */
public class XYBoxAnnotationTests extends TestCase {

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

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

    /**
     * Confirm that the equals method can distinguish all the required fields.
     */
    public void testEquals() {

        XYBoxAnnotation a1 = new XYBoxAnnotation(1.0, 2.0, 3.0, 4.0,
                new BasicStroke(1.2f), Color.red, Color.blue);
        XYBoxAnnotation a2 = new XYBoxAnnotation(1.0, 2.0, 3.0, 4.0,
                new BasicStroke(1.2f), Color.red, Color.blue);
        assertTrue(a1.equals(a2));
        assertTrue(a2.equals(a1));

        // x0
        a1 = new XYBoxAnnotation(2.0, 2.0, 3.0, 4.0, new BasicStroke(1.2f),
                Color.red, Color.blue);
        assertFalse(a1.equals(a2));
        a2 = new XYBoxAnnotation(2.0, 2.0, 3.0, 4.0, new BasicStroke(1.2f),
                Color.red, Color.blue);
        assertTrue(a1.equals(a2));

        // stroke
        a1 = new XYBoxAnnotation(1.0, 2.0, 3.0, 4.0, new BasicStroke(2.3f),
                Color.red, Color.blue);
        assertFalse(a1.equals(a2));
        a2 = new XYBoxAnnotation(1.0, 2.0, 3.0, 4.0, new BasicStroke(2.3f),
                Color.red, Color.blue);
        assertTrue(a1.equals(a2));

        GradientPaint gp1a = new GradientPaint(1.0f, 2.0f, Color.blue,
                3.0f, 4.0f, Color.red);
        GradientPaint gp1b = new GradientPaint(1.0f, 2.0f, Color.blue,
                3.0f, 4.0f, Color.red);
        GradientPaint gp2a = new GradientPaint(5.0f, 6.0f, Color.pink,
                7.0f, 8.0f, Color.white);
        GradientPaint gp2b = new GradientPaint(5.0f, 6.0f, Color.pink,
                7.0f, 8.0f, Color.white);

        // outlinePaint
        a1 = new XYBoxAnnotation(1.0, 2.0, 3.0, 4.0, new BasicStroke(2.3f),
                gp1a, Color.blue);
        assertFalse(a1.equals(a2));
        a2 = new XYBoxAnnotation(1.0, 2.0, 3.0, 4.0, new BasicStroke(2.3f),
                gp1b, Color.blue);
        assertTrue(a1.equals(a2));

        // fillPaint
        a1 = new XYBoxAnnotation(1.0, 2.0, 3.0, 4.0, new BasicStroke(2.3f),
                gp1a, gp2a);
        assertFalse(a1.equals(a2));
        a2 = new XYBoxAnnotation(1.0, 2.0, 3.0, 4.0, new BasicStroke(2.3f),
                gp1b, gp2b);
        assertTrue(a1.equals(a2));
    }

    /**
     * Two objects that are equal are required to return the same hashCode.
     */
    public void testHashCode() {
        XYBoxAnnotation a1 = new XYBoxAnnotation(1.0, 2.0, 3.0, 4.0,
                new BasicStroke(1.2f), Color.red, Color.blue);
        XYBoxAnnotation a2 = new XYBoxAnnotation(1.0, 2.0, 3.0, 4.0,
                new BasicStroke(1.2f), Color.red, Color.blue);
        assertTrue(a1.equals(a2));
        int h1 = a1.hashCode();
        int h2 = a2.hashCode();
        assertEquals(h1, h2);
    }

    /**
     * Confirm that cloning works.
     */
    public void testCloning() {
        XYBoxAnnotation a1 = new XYBoxAnnotation(1.0, 2.0, 3.0, 4.0,
                new BasicStroke(1.2f), Color.red, Color.blue);
        XYBoxAnnotation a2 = null;
        try {
            a2 = (XYBoxAnnotation) a1.clone();
        }
        catch (CloneNotSupportedException e) {
            e.printStackTrace();
        }
        assertTrue(a1 != a2);
        assertTrue(a1.getClass() == a2.getClass());
        assertTrue(a1.equals(a2));
    }

    /**
     * Checks that this class implements PublicCloneable.
     */
    public void testPublicCloneable() {
        XYBoxAnnotation a1 = new XYBoxAnnotation(1.0, 2.0, 3.0, 4.0,
                new BasicStroke(1.2f), Color.red, Color.blue);
        assertTrue(a1 instanceof PublicCloneable);
    }

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

        XYBoxAnnotation a1 = new XYBoxAnnotation(1.0, 2.0, 3.0, 4.0,
                new BasicStroke(1.2f), Color.red, Color.blue);
        XYBoxAnnotation a2 = null;

        try {
            ByteArrayOutputStream buffer = new ByteArrayOutputStream();
            ObjectOutput out = new ObjectOutputStream(buffer);
            out.writeObject(a1);
            out.close();

            ObjectInput in = new ObjectInputStream(new ByteArrayInputStream(
                    buffer.toByteArray()));
            a2 = (XYBoxAnnotation) in.readObject();
            in.close();
        }
        catch (Exception e) {
            e.printStackTrace();
        }
        assertEquals(a1, a2);
    }

    /**
     * Draws the chart with a <code>null info object to make sure that
     * no exceptions are thrown.
     */
    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 XYLineAndShapeRenderer());
            plot.addAnnotation(new XYBoxAnnotation(10.0, 12.0, 3.0, 4.0,
                    new BasicStroke(1.2f), Color.red, Color.blue));
            JFreeChart chart = new JFreeChart(plot);
            /* BufferedImage image = */ chart.createBufferedImage(300, 200,
                    null);
            success = true;
        }
        catch (NullPointerException e) {
            e.printStackTrace();
            success = false;
        }
        assertTrue(success);
    }

}