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/*
* Copyright (c) 1998, 2016, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code 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
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/* @test
@bug 4136620 4144590
@summary Make sure that Attribute & subclasses are serialized and deserialized correctly
@modules java.desktop
*/
import java.text.AttributedCharacterIterator.Attribute;
import java.awt.font.TextAttribute;
import java.io.*;
public class ReadResolve {
public static void main(String[] args) throws Exception {
testSerializationCycle(Attribute.LANGUAGE);
testSerializationCycle(TextAttribute.INPUT_METHOD_HIGHLIGHT);
boolean gotException = false;
Attribute result = null;
try {
result = doSerializationCycle(FakeAttribute.LANGUAGE);
} catch (Throwable e) {
gotException = true;
}
if (!gotException) {
throw new RuntimeException("Attribute should throw an exception when given a fake \"language\" attribute. Deserialized object: " + result);
}
}
static Attribute doSerializationCycle(Attribute attribute) throws Exception {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
ObjectOutputStream oos = new ObjectOutputStream(baos);
oos.writeObject(attribute);
oos.flush();
byte[] data = baos.toByteArray();
ByteArrayInputStream bais = new ByteArrayInputStream(data);
ObjectInputStream ois = new ObjectInputStream(bais);
Attribute result = (Attribute) ois.readObject();
return result;
}
static void testSerializationCycle(Attribute attribute) throws Exception {
Attribute result = doSerializationCycle(attribute);
if (result != attribute) {
throw new RuntimeException("attribute changed identity during serialization/deserialization");
}
}
private static class FakeAttribute extends Attribute {
// This LANGUAGE attribute should never be confused with the
// Attribute.LANGUAGE attribute. However, we don't override
// readResolve here, so that deserialization goes
// to Attribute. Attribute has to catch this problem and reject
// the fake attribute.
static final FakeAttribute LANGUAGE = new FakeAttribute("language");
FakeAttribute(String name) {
super(name);
}
}
}
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