jfreechart example source code file (LegendTitleTests.java)

This example jfreechart source code file (LegendTitleTests.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, dialog, font, geometry, io, legendtitle, legendtitle, legendtitletests, legendtitletests, objectinput, test, testcase, xyplot, xyplot

The jfreechart LegendTitleTests.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.]
 *
 * ---------------------
 * LegendTitleTests.java
 * ---------------------
 * (C) Copyright 2005-2008, by Object Refinery Limited and Contributors.
 *
 * Original Author:  David Gilbert (for Object Refinery Limited);
 * Contributor(s):   -;
 *
 * Changes
 * -------
 * 25-Feb-2005 : Version 1 (DG);
 * 16-Mar-2005 : Extended testEquals() (DG);
 *
 */

package org.jfree.chart.title.junit;

import java.awt.Color;
import java.awt.Font;
import java.awt.GradientPaint;
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 junit.framework.Test;
import junit.framework.TestCase;
import junit.framework.TestSuite;

import org.jfree.chart.plot.XYPlot;
import org.jfree.chart.title.LegendTitle;
import org.jfree.ui.RectangleAnchor;
import org.jfree.ui.RectangleEdge;

/**
 * Some tests for the {@link LegendTitle} class.
 */
public class LegendTitleTests extends TestCase {

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

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

    /**
     * Check that the equals() method distinguishes all fields.
     */
    public void testEquals() {
        XYPlot plot1 = new XYPlot();
        LegendTitle t1 = new LegendTitle(plot1);
        LegendTitle t2 = new LegendTitle(plot1);
        assertEquals(t1, t2);

        t1.setBackgroundPaint(
            new GradientPaint(1.0f, 2.0f, Color.red, 3.0f, 4.0f, Color.yellow)
        );
        assertFalse(t1.equals(t2));
        t2.setBackgroundPaint(
            new GradientPaint(1.0f, 2.0f, Color.red, 3.0f, 4.0f, Color.yellow)
        );
        assertTrue(t1.equals(t2));

        t1.setLegendItemGraphicEdge(RectangleEdge.BOTTOM);
        assertFalse(t1.equals(t2));
        t2.setLegendItemGraphicEdge(RectangleEdge.BOTTOM);
        assertTrue(t1.equals(t2));

        t1.setLegendItemGraphicAnchor(RectangleAnchor.BOTTOM_LEFT);
        assertFalse(t1.equals(t2));
        t2.setLegendItemGraphicAnchor(RectangleAnchor.BOTTOM_LEFT);
        assertTrue(t1.equals(t2));

        t1.setLegendItemGraphicLocation(RectangleAnchor.TOP_LEFT);
        assertFalse(t1.equals(t2));
        t2.setLegendItemGraphicLocation(RectangleAnchor.TOP_LEFT);
        assertTrue(t1.equals(t2));

        t1.setItemFont(new Font("Dialog", Font.PLAIN, 19));
        assertFalse(t1.equals(t2));
        t2.setItemFont(new Font("Dialog", Font.PLAIN, 19));
        assertTrue(t1.equals(t2));
    }

    /**
     * Two objects that are equal are required to return the same hashCode.
     */
    public void testHashcode() {
        XYPlot plot1 = new XYPlot();
        LegendTitle t1 = new LegendTitle(plot1);
        LegendTitle t2 = new LegendTitle(plot1);
        assertTrue(t1.equals(t2));
        int h1 = t1.hashCode();
        int h2 = t2.hashCode();
        assertEquals(h1, h2);
    }

    /**
     * Confirm that cloning works.
     */
    public void testCloning() {
        XYPlot plot = new XYPlot();
        Rectangle2D bounds1 = new Rectangle2D.Double(10.0, 20.0, 30.0, 40.0);
        LegendTitle t1 = new LegendTitle(plot);
        t1.setBackgroundPaint(new GradientPaint(1.0f, 2.0f, Color.red, 3.0f,
                4.0f, Color.yellow));
        t1.setBounds(bounds1);
        LegendTitle t2 = null;
        try {
            t2 = (LegendTitle) t1.clone();
        }
        catch (CloneNotSupportedException e) {
            e.printStackTrace();
        }
        assertTrue(t1 != t2);
        assertTrue(t1.getClass() == t2.getClass());
        assertTrue(t1.equals(t2));

        // check independence
        bounds1.setFrame(40.0, 30.0, 20.0, 10.0);
        assertFalse(t1.equals(t2));
        t2.setBounds(new Rectangle2D.Double(40.0, 30.0, 20.0, 10.0));
        assertTrue(t1.equals(t2));
    }

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

        XYPlot plot = new XYPlot();
        LegendTitle t1 = new LegendTitle(plot);
        LegendTitle t2 = null;

        try {
            ByteArrayOutputStream buffer = new ByteArrayOutputStream();
            ObjectOutput out = new ObjectOutputStream(buffer);
            out.writeObject(t1);
            out.close();

            ObjectInput in = new ObjectInputStream(
                new ByteArrayInputStream(buffer.toByteArray())
            );
            t2 = (LegendTitle) in.readObject();
            in.close();
        }
        catch (Exception e) {
            fail(e.toString());
        }
        assertTrue(t1.equals(t2));
        assertTrue(t2.getSources()[0].equals(plot));
    }

}