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// Tags: JDK1.1
// Copyright (C) 2005 Daniel Bonniot <bonniot@users.sf.net>
// 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.io.Serializable;
import gnu.testlet.TestHarness;
import gnu.testlet.Testlet;
import java.io.ByteArrayOutputStream;
import java.io.ObjectOutputStream;
/**
* Check when a parent writeReplace() method should be used for subclasses.
*
* Here is the rationale for this test, based on Sun's javadoc for
* java.io.Serializable:
*
* First, writeReplace must be declared with:
* ANY-ACCESS-MODIFIER Object writeReplace() throws ObjectStreamException;
* Thus, a non-private writeReplace is OK.
*
* Second, the rules for invoking writeReplace are that
* it must be called if it would be accessible from the class of the object
* being deserialized. So, a non-private writeReplace method in the parent must
* be called, but a private one should not be.
*/
public class ParentWriteReplace implements Testlet {
public void test(TestHarness harness)
{
try {
ByteArrayOutputStream outb = new ByteArrayOutputStream();
ObjectOutputStream outs = new ObjectOutputStream(outb);
MySingleton singleton = new MySingleton();
outs.writeObject(singleton);
harness.check(singleton.replaced);
Foo foo = new MyFoo();
outs.writeObject(foo);
harness.check(! foo.replaced);
}
catch (Throwable e) {
harness.debug(e);
}
}
//// Singleton/MySingleton with a non-private writeReplace ////
static abstract class Singleton implements java.io.Serializable
{
boolean replaced = false;
/** NOTE: this writeReplace is not private.
*/
Object writeReplace() {
replaced = true;
return this;
}
}
static class MySingleton extends Singleton
{
}
//// Foo/MyFoo with a private writeReplace ////
static abstract class Foo implements java.io.Serializable
{
boolean replaced = false;
/** NOTE: this writeReplace is private.
*/
private Object writeReplace() {
replaced = true;
return this;
}
}
static class MyFoo extends Foo
{
}
}
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