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TreeMap / bug report 10383


I saw this bug report (10383) get posted, and wrote a quick Mauve test
to cover it - see attached.  It passes with JDK 1.4, and fails with
Classpath as expected.

Regards,

Dave Gilbert
JFreeChart Project Leader
//Tags: JDK1.4

//Copyright (C) 2004 David Gilbert <david.gilbert@object-refinery.com>

//This file is part of Mauve.

//Mauve is free software; you can redistribute it and/or modify
//it under the terms of the GNU General Public License as published by
//the Free Software Foundation; either version 2, or (at your option)
//any later version.

//Mauve 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 General Public License for more details.

//You should have received a copy of the GNU General Public License
//along with Mauve; see the file COPYING.  If not, write to
//the Free Software Foundation, 59 Temple Place - Suite 330,
//Boston, MA 02111-1307, USA.

package gnu.testlet.java.util.TreeMap;

import gnu.testlet.TestHarness;
import gnu.testlet.Testlet;

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 java.util.TreeMap;

/**
 * Checks the serialization of the TreeMap class.
 */
public class serialization implements Testlet 
{

  /**
   * Runs the test using the specified harness.
   * 
   * @param harness  the test harness (<code>null</code> not permitted).
   */
  public void test(TestHarness harness)      
  {
    // try serializing an empty TreeMap - see bug report 10383
    TreeMap tm1 = new TreeMap();
    TreeMap tm2 = null;

    try {
      ByteArrayOutputStream buffer = new ByteArrayOutputStream();
      ObjectOutput out = new ObjectOutputStream(buffer);
      out.writeObject(tm1);
      out.close();

      ObjectInput in = new ObjectInputStream(
        new ByteArrayInputStream(buffer.toByteArray())
      );
      tm2 = (TreeMap) in.readObject();
      in.close();
    }
    catch (Exception e) {
        System.out.println(e);
    }
    harness.check(tm1.equals(tm2)); 
  } 
}

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