Proposed test on serialization back references

[Olivier Jolly <olivier.jolly@pcedev.com>]

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Hi,
  for my first patch that I could commit myself, I prefer to ensure I'm
not doing something wrong and to begin with a trivial test (I got a more
interesting one with an actual classpath bug and the classpath fix that
I will add at the same time when I'll also get the write access on
classpath).
  Thanks for the feedback.

2006-02-02   Olivier Jolly   <olivier.jolly@pcedev.com>

    * gnu/testlet/java/io/ObjectInputOutput/LoopSerializationTest.java:
New test on back references in serialization,
    * gnu/testlet/java/io/ObjectInputOutput/SerializableLoopA.java: New
helper file,
    * gnu/testlet/java/io/ObjectInputOutput/SerializableLoopB.java:
Likewise.

Regards,

Olivier



[-- Attachment #2: LoopSerializationTest.java --]
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/* LoopSerializationTest.java -- Test back references in serialization
 Copyright (C) 2006 Olivier Jolly <olivier.jolly@pcedev.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, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 02110-1301 USA.

 */

// Tags: JDK1.2


package gnu.testlet.java.io.ObjectInputOutput;

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

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.StreamCorruptedException;

public class LoopSerializationTest implements Testlet
{

  public void test(TestHarness harness)
  {

    SerializableLoopA a = new SerializableLoopA();
    SerializableLoopB b = new SerializableLoopB();

    a.setB(b);
    b.setA(a);

    harness.checkPoint("LoopSerializationTest");

    harness.check(a.getB(), b);
    harness.check(b.getA(), a);

    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    try
      {
        new ObjectOutputStream(baos).writeObject(a);
      }
    catch (IOException e)
      {
        harness.debug(e);
        harness.fail("Serialiazing a loop");
      }
    ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray());
    try
      {
        SerializableLoopA serialized = (SerializableLoopA) new ObjectInputStream(
                                                                                 bais).readObject();
        harness.check(serialized.getB(), b);
      }
    catch (StreamCorruptedException e)
      {
        harness.debug(e);
        harness.fail("Deserialiazing a loop");
      }
    catch (ClassNotFoundException e)
      {
        harness.debug(e);
        harness.fail("Deserialiazing a loop");
      }
    catch (IOException e)
      {
        harness.debug(e);
        harness.fail("Deserialiazing a loop");
      }
  }
}

[-- Attachment #3: SerializableLoopA.java --]
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/* SeriableLoopA.java -- Simple class used to create a loop
 Copyright (C) 2006 Olivier Jolly <olivier.jolly@pcedev.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, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 02110-1301 USA.

 */

// Tags: not-a-test


package gnu.testlet.java.io.ObjectInputOutput;

import java.io.Serializable;

public class SerializableLoopA implements Serializable
{

  private static final long serialVersionUID = -8099761309283286991L;

  SerializableLoopB b;

  public SerializableLoopB getB()
  {
    return b;
  }

  public void setB(SerializableLoopB b)
  {
    this.b = b;
  }

}

[-- Attachment #4: SerializableLoopB.java --]
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/* SerializableLoopB.java -- Simple class used to create a loop
 Copyright (C) 2006 Olivier Jolly <olivier.jolly@pcedev.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, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 02110-1301 USA.

 */

// Tags: not-a-test


package gnu.testlet.java.io.ObjectInputOutput;

import java.io.Serializable;

public class SerializableLoopB implements Serializable
{

  private static final long serialVersionUID = 3033857304110309388L;

  SerializableLoopA a;

  int value = -1;

  public SerializableLoopA getA()
  {
    return a;
  }

  public void setA(SerializableLoopA a)
  {
    this.a = a;
  }

  public int getValue()
  {
    return value;
  }

  public void setValue(int value)
  {
    this.value = value;
  }

  public boolean equals(Object obj)
  {
    if (obj instanceof SerializableLoopB)
      {
        return getValue() == ((SerializableLoopB) obj).getValue();
      }
    return false;
  }

  public int hashCode()
  {
    return new Integer(getValue()).hashCode();
  }

}