# LegendTitleTests.java

    /* ===========================================================
     * JFreeChart : a free chart library for the Java(tm) platform
     * ===========================================================
     *
     * (C) Copyright 2000-2007, 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, 2007, 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));
        }

    }