jfreechart example source code file (XYLineAnnotationTests.java)

This example jfreechart source code file (XYLineAnnotationTests.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, bytearrayinputstream, bytearrayoutputstream, bytearrayoutputstream, clonenotsupportedexception, gradientpaint, io, objectinput, stroke, stroke, test, testcase, xylineannotation, xylineannotation, xylineannotationtests, xylineannotationtests

The jfreechart XYLineAnnotationTests.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.]
 *
 * --------------------------
 * XYLineAnnotationTests.java
 * --------------------------
 * (C) Copyright 2003-2008, by Object Refinery Limited and Contributors.
 *
 * Original Author:  David Gilbert (for Object Refinery Limited);
 * Contributor(s):   -;
 *
 * Changes
 * -------
 * 19-Aug-2003 : Version 1 (DG);
 * 07-Jan-2005 : Added hashCode() test (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.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.annotations.XYLineAnnotation;
import org.jfree.util.PublicCloneable;

/**
 * Tests for the {@link XYLineAnnotation} class.
 */
public class XYLineAnnotationTests extends TestCase {

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

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

    /**
     * Confirm that the equals method can distinguish all the required fields.
     */
    public void testEquals() {
        Stroke stroke = new BasicStroke(2.0f);
        XYLineAnnotation a1 = new XYLineAnnotation(10.0, 20.0, 100.0, 200.0,
                stroke, Color.blue);
        XYLineAnnotation a2 = new XYLineAnnotation(10.0, 20.0, 100.0, 200.0,
                stroke, Color.blue);
        assertTrue(a1.equals(a2));
        assertTrue(a2.equals(a1));

        a1 = new XYLineAnnotation(11.0, 20.0, 100.0, 200.0, stroke, Color.blue);
        assertFalse(a1.equals(a2));
        a2 = new XYLineAnnotation(11.0, 20.0, 100.0, 200.0, stroke, Color.blue);
        assertTrue(a1.equals(a2));

        a1 = new XYLineAnnotation(11.0, 21.0, 100.0, 200.0, stroke, Color.blue);
        assertFalse(a1.equals(a2));
        a2 = new XYLineAnnotation(11.0, 21.0, 100.0, 200.0, stroke, Color.blue);
        assertTrue(a1.equals(a2));

        a1 = new XYLineAnnotation(11.0, 21.0, 101.0, 200.0, stroke, Color.blue);
        assertFalse(a1.equals(a2));
        a2 = new XYLineAnnotation(11.0, 21.0, 101.0, 200.0, stroke, Color.blue);
        assertTrue(a1.equals(a2));

        a1 = new XYLineAnnotation(11.0, 21.0, 101.0, 201.0, stroke, Color.blue);
        assertFalse(a1.equals(a2));
        a2 = new XYLineAnnotation(11.0, 21.0, 101.0, 201.0, stroke, Color.blue);
        assertTrue(a1.equals(a2));

        Stroke stroke2 = new BasicStroke(0.99f);
        a1 = new XYLineAnnotation(11.0, 21.0, 101.0, 200.0, stroke2, Color.blue);
        assertFalse(a1.equals(a2));
        a2 = new XYLineAnnotation(11.0, 21.0, 101.0, 200.0, stroke2, Color.blue);
        assertTrue(a1.equals(a2));

        GradientPaint g1 = new GradientPaint(1.0f, 2.0f, Color.red,
                3.0f, 4.0f, Color.white);
        GradientPaint g2 = new GradientPaint(1.0f, 2.0f, Color.red,
                3.0f, 4.0f, Color.white);
        a1 = new XYLineAnnotation(11.0, 21.0, 101.0, 200.0, stroke2, g1);
        assertFalse(a1.equals(a2));
        a2 = new XYLineAnnotation(11.0, 21.0, 101.0, 200.0, stroke2, g2);
        assertTrue(a1.equals(a2));
    }

    /**
     * Two objects that are equal are required to return the same hashCode.
     */
    public void testHashCode() {
        Stroke stroke = new BasicStroke(2.0f);
        XYLineAnnotation a1 = new XYLineAnnotation(10.0, 20.0, 100.0, 200.0,
                stroke, Color.blue);
        XYLineAnnotation a2 = new XYLineAnnotation(10.0, 20.0, 100.0, 200.0,
                stroke, Color.blue);
        assertTrue(a1.equals(a2));
        int h1 = a1.hashCode();
        int h2 = a2.hashCode();
        assertEquals(h1, h2);
    }

    /**
     * Confirm that cloning works.
     */
    public void testCloning() {
        Stroke stroke = new BasicStroke(2.0f);
        XYLineAnnotation a1 = new XYLineAnnotation(10.0, 20.0, 100.0, 200.0,
                stroke, Color.blue);
        XYLineAnnotation a2 = null;
        try {
            a2 = (XYLineAnnotation) 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() {
        Stroke stroke = new BasicStroke(2.0f);
        XYLineAnnotation a1 = new XYLineAnnotation(10.0, 20.0, 100.0, 200.0,
                stroke, Color.blue);
        assertTrue(a1 instanceof PublicCloneable);
    }

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

        Stroke stroke = new BasicStroke(2.0f);
        XYLineAnnotation a1 = new XYLineAnnotation(10.0, 20.0, 100.0, 200.0,
                stroke, Color.blue);
        XYLineAnnotation 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 = (XYLineAnnotation) in.readObject();
            in.close();
        }
        catch (Exception e) {
            e.printStackTrace();
        }
        assertEquals(a1, a2);

    }

}