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jfreechart example source code file (XYDrawableAnnotationTests.java)

This example jfreechart source code file (XYDrawableAnnotationTests.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, bytearrayoutputstream, clonenotsupportedexception, clonenotsupportedexception, geometry, io, objectinput, publiccloneable, serializable, test, testcase, testdrawable, testdrawable, xydrawableannotation, xydrawableannotation, xydrawableannotationtests

The jfreechart XYDrawableAnnotationTests.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.]
 *
 * ------------------------------
 * XYDrawableAnnotationTests.java
 * ------------------------------
 * (C) Copyright 2003-2008, by Object Refinery Limited.
 *
 * Original Author:  David Gilbert (for Object Refinery Limited);
 * Contributor(s):   -;
 *
 * Changes
 * -------
 * 19-Aug-2003 : Version 1 (DG);
 * 01-Oct-2004 : Fixed bugs in tests (DG);
 * 07-Jan-2005 : Added hashCode() test (DG);
 * 23-Apr-2008 : Added testPublicCloneable() (DG);
 *
 */

package org.jfree.chart.annotations.junit;

import java.awt.Graphics2D;
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 java.io.Serializable;

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

import org.jfree.chart.annotations.XYDrawableAnnotation;
import org.jfree.ui.Drawable;
import org.jfree.util.PublicCloneable;

/**
 * Tests for the {@link XYDrawableAnnotation} class.
 */
public class XYDrawableAnnotationTests extends TestCase {

    static class TestDrawable implements Drawable, Cloneable, Serializable {
        /**
         * Default constructor.
         */
        public TestDrawable() {
        }
        /**
         * Draws something.
         * @param g2  the graphics device.
         * @param area  the area in which to draw.
         */
        public void draw(Graphics2D g2, Rectangle2D area) {
            // do nothing
        }
        /**
         * Tests this object for equality with an arbitrary object.
         * @param obj  the object to test against (<code>null permitted).
         * @return A boolean.
         */
        public boolean equals(Object obj) {
            if (obj == this) {
                return true;
            }
            if (!(obj instanceof TestDrawable)) {
                return false;
            }
            return true;
        }
        /**
         * Returns a clone.
         *
         * @return A clone.
         *
         * @throws CloneNotSupportedException if there is a problem cloning.
         */
        public Object clone() throws CloneNotSupportedException {
            return super.clone();
        }
    }

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

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

    /**
     * Confirm that the equals method can distinguish all the required fields.
     */
    public void testEquals() {
        XYDrawableAnnotation a1 = new XYDrawableAnnotation(10.0, 20.0, 100.0,
                200.0, new TestDrawable());
        XYDrawableAnnotation a2 = new XYDrawableAnnotation(10.0, 20.0, 100.0,
                200.0, new TestDrawable());
        assertTrue(a1.equals(a2));

        a1 = new XYDrawableAnnotation(11.0, 20.0, 100.0, 200.0,
                new TestDrawable());
        assertFalse(a1.equals(a2));
        a2 = new XYDrawableAnnotation(11.0, 20.0, 100.0, 200.0,
                new TestDrawable());
        assertTrue(a1.equals(a2));

        a1 = new XYDrawableAnnotation(11.0, 22.0, 100.0, 200.0,
                new TestDrawable());
        assertFalse(a1.equals(a2));
        a2 = new XYDrawableAnnotation(11.0, 22.0, 100.0, 200.0,
                new TestDrawable());
        assertTrue(a1.equals(a2));

        a1 = new XYDrawableAnnotation(11.0, 22.0, 101.0, 200.0,
                new TestDrawable());
        assertFalse(a1.equals(a2));
        a2 = new XYDrawableAnnotation(11.0, 22.0, 101.0, 200.0,
                new TestDrawable());
        assertTrue(a1.equals(a2));

        a1 = new XYDrawableAnnotation(11.0, 22.0, 101.0, 202.0,
                new TestDrawable());
        assertFalse(a1.equals(a2));
        a2 = new XYDrawableAnnotation(11.0, 22.0, 101.0, 202.0,
                new TestDrawable());
        assertTrue(a1.equals(a2));

        a1 = new XYDrawableAnnotation(11.0, 22.0, 101.0, 202.0, 2.0,
                new TestDrawable());
        assertFalse(a1.equals(a2));
        a2 = new XYDrawableAnnotation(11.0, 22.0, 101.0, 202.0, 2.0,
                new TestDrawable());
        assertTrue(a1.equals(a2));
    }

    /**
     * Two objects that are equal are required to return the same hashCode.
     */
    public void testHashCode() {
        XYDrawableAnnotation a1 = new XYDrawableAnnotation(10.0, 20.0, 100.0,
                200.0, new TestDrawable());
        XYDrawableAnnotation a2 = new XYDrawableAnnotation(10.0, 20.0, 100.0,
                200.0, new TestDrawable());
        assertTrue(a1.equals(a2));
        int h1 = a1.hashCode();
        int h2 = a2.hashCode();
        assertEquals(h1, h2);
    }

    /**
     * Confirm that cloning works.
     */
    public void testCloning() {
        XYDrawableAnnotation a1 = new XYDrawableAnnotation(10.0, 20.0, 100.0,
                200.0, new TestDrawable());
        XYDrawableAnnotation a2 = null;
        try {
            a2 = (XYDrawableAnnotation) a1.clone();
        }
        catch (CloneNotSupportedException e) {
            System.err.println("Failed to clone.");
        }
        assertTrue(a1 != a2);
        assertTrue(a1.getClass() == a2.getClass());
        assertTrue(a1.equals(a2));
    }

    /**
     * Checks that this class implements PublicCloneable.
     */
    public void testPublicCloneable() {
        XYDrawableAnnotation a1 = new XYDrawableAnnotation(10.0, 20.0, 100.0,
                200.0, new TestDrawable());
        assertTrue(a1 instanceof PublicCloneable);
    }

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

        XYDrawableAnnotation a1 = new XYDrawableAnnotation(10.0, 20.0, 100.0,
                200.0, new TestDrawable());
        XYDrawableAnnotation 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 = (XYDrawableAnnotation) in.readObject();
            in.close();
        }
        catch (Exception e) {
            e.printStackTrace();
        }
        assertEquals(a1, a2);

    }

}

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