/*

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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

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 *

 * 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,

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 */

/* @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);

        }

    }

}