gt:             s2 = (MyComparableObjectSeries) in.readObject();
context: /* ===========================================================
   * 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.]
   *
   * --------------------------------
   * ComparableObjectSeriesTests.java
   * --------------------------------
   * (C) Copyright 2006-2008, by Object Refinery Limited and Contributors.
   *
   * Original Author:  David Gilbert (for Object Refinery Limited);
   * Contributor(s):   -;
   *
   * Changes
   * -------
   * 20-Oct-2006 : Version 1 (DG);
   * 31-Oct-2007 : New hashCode() test (DG);
   *
   */
  
  package org.jfree.data.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.data.ComparableObjectItem;
  import org.jfree.data.ComparableObjectSeries;
  
  /**
   * Tests for the {@link ComparableObjectSeries} class.
   */
  public class ComparableObjectSeriesTests extends TestCase {
  
      static class MyComparableObjectSeries extends ComparableObjectSeries {
          /**
           * Creates a new instance.
           *
           * @param key  the series key.
           */
          public MyComparableObjectSeries(Comparable key) {
              super(key);
          }
          /**
           * Creates a new instance.
           *
           * @param key  the series key.
           * @param autoSort  automatically sort by x-value?
           * @param allowDuplicateXValues  allow duplicate values?
           */
          public MyComparableObjectSeries(Comparable key, boolean autoSort,
                  boolean allowDuplicateXValues) {
              super(key, autoSort, allowDuplicateXValues);
          }
          public void add(Comparable x, Object y) {
              super.add(x, y);
          }
  
          public ComparableObjectItem remove(Comparable x) {
              return super.remove(x);
          }
      }
  
      /**
       * Returns the tests as a test suite.
       *
       * @return The test suite.
       */
      public static Test suite() {
          return new TestSuite(ComparableObjectSeriesTests.class);
      }
  
      /**
       * Constructs a new set of tests.
       *
       * @param name  the name of the tests.
       */
      public ComparableObjectSeriesTests(String name) {
          super(name);
      }
  
      /**
       * Some checks for the constructor.
       */
      public void testConstructor1() {
          ComparableObjectSeries s1 = new ComparableObjectSeries("s1");
          assertEquals("s1", s1.getKey());
          assertNull(s1.getDescription());
          assertTrue(s1.getAllowDuplicateXValues());
          assertTrue(s1.getAutoSort());
          assertEquals(0, s1.getItemCount());
          assertEquals(Integer.MAX_VALUE, s1.getMaximumItemCount());
  
          // try null key
          boolean pass = false;
          try {
              s1 = new ComparableObjectSeries(null);
          }
          catch (IllegalArgumentException e) {
              pass = true;
          }
          assertTrue(pass);
      }
  
      /**
       * Confirm that the equals method can distinguish all the required fields.
       */
      public void testEquals() {
          MyComparableObjectSeries s1 = new MyComparableObjectSeries("A");
          MyComparableObjectSeries s2 = new MyComparableObjectSeries("A");
          assertTrue(s1.equals(s2));
          assertTrue(s2.equals(s1));
  
          // key
          s1 = new MyComparableObjectSeries("B");
          assertFalse(s1.equals(s2));
          s2 = new MyComparableObjectSeries("B");
          assertTrue(s1.equals(s2));
  
          // autoSort
          s1 = new MyComparableObjectSeries("B", false, true);
          assertFalse(s1.equals(s2));
          s2 = new MyComparableObjectSeries("B", false, true);
          assertTrue(s1.equals(s2));
  
          // allowDuplicateXValues
          s1 = new MyComparableObjectSeries("B", false, false);
          assertFalse(s1.equals(s2));
          s2 = new MyComparableObjectSeries("B", false, false);
          assertTrue(s1.equals(s2));
  
          // add a value
          s1.add(new Integer(1), "ABC");
          assertFalse(s1.equals(s2));
          s2.add(new Integer(1), "ABC");
          assertTrue(s1.equals(s2));
  
          // add another value
          s1.add(new Integer(0), "DEF");
          assertFalse(s1.equals(s2));
          s2.add(new Integer(0), "DEF");
          assertTrue(s1.equals(s2));
  
          // remove an item
          s1.remove(new Integer(1));
          assertFalse(s1.equals(s2));
          s2.remove(new Integer(1));
          assertTrue(s1.equals(s2));
      }
  
      /**
       * Some checks for the clone() method.
       */
      public void testCloning() {
          MyComparableObjectSeries s1 = new MyComparableObjectSeries("A");
          s1.add(new Integer(1), "ABC");
          MyComparableObjectSeries s2 = null;
          try {
              s2 = (MyComparableObjectSeries) s1.clone();
          }
          catch (CloneNotSupportedException e) {
              e.printStackTrace();
          }
          assertTrue(s1 != s2);
          assertTrue(s1.getClass() == s2.getClass());
          assertTrue(s1.equals(s2));
      }
  
      /**
       * Serialize an instance, restore it, and check for equality.
       */
      public void testSerialization() {
          MyComparableObjectSeries s1 = new MyComparableObjectSeries("A");
          s1.add(new Integer(1), "ABC");
          MyComparableObjectSeries s2 = null;
          try {
              ByteArrayOutputStream buffer = new ByteArrayOutputStream();
              ObjectOutput out = new ObjectOutputStream(buffer);
              out.writeObject(s1);
              out.close();
  
              ObjectInput in = new ObjectInputStream(
                      new ByteArrayInputStream(buffer.toByteArray()));
  