# StandardDialFrameTests.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.]
     *
     * ---------------------------
     * StandardDialFrameTests.java
     * ---------------------------
     * (C) Copyright 2006-2007, by Object Refinery Limited and Contributors.
     *
     * Original Author:  David Gilbert (for Object Refinery Limited);
     * Contributor(s):   -;
     *
     * Changes
     * -------
     * 03-Nov-2006 : Version 1 (DG);
     * 29-Oct-2007 : Renamed StandardDialFrameTests (DG);
     *
     */

    package org.jfree.chart.plot.dial.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.plot.dial.StandardDialFrame;

    /**
     * Tests for the {@link StandardDialFrame} class.
     */
    public class StandardDialFrameTests extends TestCase {

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

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

        /**
         * Confirm that the equals method can distinguish all the required fields.
         */
        public void testEquals() {
            StandardDialFrame f1 = new StandardDialFrame();
            StandardDialFrame f2 = new StandardDialFrame();
            assertTrue(f1.equals(f2));

            // radius
            f1.setRadius(0.2);
            assertFalse(f1.equals(f2));
            f2.setRadius(0.2);
            assertTrue(f1.equals(f2));

            // backgroundPaint
            f1.setBackgroundPaint(new GradientPaint(1.0f, 2.0f, Color.white, 3.0f,
                    4.0f, Color.yellow));
            assertFalse(f1.equals(f2));
            f2.setBackgroundPaint(new GradientPaint(1.0f, 2.0f, Color.white, 3.0f,
                    4.0f, Color.yellow));
            assertTrue(f1.equals(f2));

            // foregroundPaint
            f1.setForegroundPaint(new GradientPaint(1.0f, 2.0f, Color.blue, 3.0f,
                    4.0f, Color.green));
            assertFalse(f1.equals(f2));
            f2.setForegroundPaint(new GradientPaint(1.0f, 2.0f, Color.blue, 3.0f,
                    4.0f, Color.green));
            assertTrue(f1.equals(f2));

            // stroke
            f1.setStroke(new BasicStroke(2.4f));
            assertFalse(f1.equals(f2));
            f2.setStroke(new BasicStroke(2.4f));
            assertTrue(f1.equals(f2));

            // check an inherited attribute
            f1.setVisible(false);
            assertFalse(f1.equals(f2));
            f2.setVisible(false);
            assertTrue(f1.equals(f2));
        }

        /**
         * Two objects that are equal are required to return the same hashCode.
         */
        public void testHashCode() {
            StandardDialFrame f1 = new StandardDialFrame();
            StandardDialFrame f2 = new StandardDialFrame();
            assertTrue(f1.equals(f2));
            int h1 = f1.hashCode();
            int h2 = f2.hashCode();
            assertEquals(h1, h2);
        }

        /**
         * Confirm that cloning works.
         */
        public void testCloning() {
            StandardDialFrame f1 = new StandardDialFrame();
            StandardDialFrame f2 = null;
            try {
                f2 = (StandardDialFrame) f1.clone();
            }
            catch (CloneNotSupportedException e) {
                e.printStackTrace();
            }
            assertTrue(f1 != f2);
            assertTrue(f1.getClass() == f2.getClass());
            assertTrue(f1.equals(f2));

            // check that the listener lists are independent
            MyDialLayerChangeListener l1 = new MyDialLayerChangeListener();
            f1.addChangeListener(l1);
            assertTrue(f1.hasListener(l1));
            assertFalse(f2.hasListener(l1));
        }

        /**
         * Serialize an instance, restore it, and check for equality.
         */
        public void testSerialization() {
            StandardDialFrame f1 = new StandardDialFrame();
            StandardDialFrame f2 = null;

            try {
                ByteArrayOutputStream buffer = new ByteArrayOutputStream();
                ObjectOutput out = new ObjectOutputStream(buffer);
                out.writeObject(f1);
                out.close();

                ObjectInput in = new ObjectInputStream(
                        new ByteArrayInputStream(buffer.toByteArray()));
                f2 = (StandardDialFrame) in.readObject();
                in.close();
            }
            catch (Exception e) {
                e.printStackTrace();
            }
            assertEquals(f1, f2);
        }

    }