# StackedBarRendererTests.java

    /* ===========================================================
     * 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.]
     *
     * ----------------------------
     * StackedBarRendererTests.java
     * ----------------------------
     * (C) Copyright 2003-2008, by Object Refinery Limited and Contributors.
     *
     * Original Author:  David Gilbert (for Object Refinery Limited);
     * Contributor(s):   -;
     *
     * Changes
     * -------
     * 25-Mar-2003 : Version 1 (DG);
     * 23-Apr-2008 : Added testPublicCloneable() (DG);
     *
     */

    package org.jfree.chart.renderer.category.junit;

    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.renderer.category.StackedBarRenderer;
    import org.jfree.util.PublicCloneable;

    /**
     * Tests for the {@link StackedBarRenderer} class.
     */
    public class StackedBarRendererTests extends TestCase {

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

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

        /**
         * Check that the equals() method distinguishes all fields.
         */
        public void testEquals() {
            StackedBarRenderer r1 = new StackedBarRenderer();
            StackedBarRenderer r2 = new StackedBarRenderer();
            assertTrue(r1.equals(r2));
            assertTrue(r2.equals(r1));

            r1.setRenderAsPercentages(true);
            assertFalse(r1.equals(r2));
            r2.setRenderAsPercentages(true);
            assertTrue(r1.equals(r2));
        }

        /**
         * Two objects that are equal are required to return the same hashCode.
         */
        public void testHashCode() {
            StackedBarRenderer r1 = new StackedBarRenderer();
            StackedBarRenderer r2 = new StackedBarRenderer();
            assertTrue(r1.equals(r2));
            int h1 = r1.hashCode();
            int h2 = r2.hashCode();
            assertEquals(h1, h2);
        }

        /**
         * Confirm that cloning works.
         */
        public void testCloning() {
            StackedBarRenderer r1 = new StackedBarRenderer();
            StackedBarRenderer r2 = null;
            try {
                r2 = (StackedBarRenderer) r1.clone();
            }
            catch (CloneNotSupportedException e) {
                System.err.println("Failed to clone.");
            }
            assertTrue(r1 != r2);
            assertTrue(r1.getClass() == r2.getClass());
            assertTrue(r1.equals(r2));
        }

        /**
         * Check that this class implements PublicCloneable.
         */
        public void testPublicCloneable() {
            StackedBarRenderer r1 = new StackedBarRenderer();
            assertTrue(r1 instanceof PublicCloneable);
        }

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

            StackedBarRenderer r1 = new StackedBarRenderer();
            StackedBarRenderer r2 = null;

            try {
                ByteArrayOutputStream buffer = new ByteArrayOutputStream();
                ObjectOutput out = new ObjectOutputStream(buffer);
                out.writeObject(r1);
                out.close();

                ObjectInput in = new ObjectInputStream(
                    new ByteArrayInputStream(buffer.toByteArray())
                );
                r2 = (StackedBarRenderer) in.readObject();
                in.close();
            }
            catch (Exception e) {
                System.out.println(e.toString());
            }
            assertEquals(r1, r2);

        }

    }