/*

 * Copyright (c) 2000, 2019, 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 4311991

 *

 * @clean Write Read Foo Bar

 * @compile Write.java

 * @run main Write

 * @clean Write Read Foo Bar

 * @compile Read.java

 * @run main Read

 *

 * @summary Test ObjectOutputStream.writeUnshared/readUnshared functionality.

 */

import java.io.*;

class Foo implements Serializable {

    private static final long serialVersionUID = 1L;

    private static final ObjectStreamField[] serialPersistentFields =

        new ObjectStreamField[] {

            new ObjectStreamField("shared1", String.class),

            new ObjectStreamField("shared2", String.class, false),

            new ObjectStreamField("unshared1", String.class, true),

            new ObjectStreamField("unshared2", String.class, true)

        };

    String shared1, shared2, unshared1, unshared2;

    Foo() {

        shared1 = shared2 = unshared1 = unshared2 = "foo";

    }

}

class Bar implements Serializable {

    private static final long serialVersionUID = 0L;

    @SuppressWarnings("serial") /* Incorrect use is being tested */

    Object obj;

    Bar(Object obj) {

        this.obj = obj;

    }

}

public class Write {

    public static void main(String[] args) throws Exception {

        String str1 = "foo";

        ByteArrayOutputStream bout = new ByteArrayOutputStream();

        ObjectOutputStream oout = new ObjectOutputStream(bout);

        oout.writeObject(str1);

        oout.writeObject(str1);

        oout.writeUnshared(str1);

        oout.writeUnshared(str1);

        oout.writeObject(new Foo());

        oout.close();

        ByteArrayInputStream bin =

            new ByteArrayInputStream(bout.toByteArray());

        ObjectInputStream oin = new ObjectInputStream(bin);

        str1 = (String) oin.readObject();

        if (oin.readObject() != str1) {

            throw new Error();

        }

        String str2 = (String) oin.readObject();

        String str3 = (String) oin.readObject();

        if (str2 == str1 || str3 == str1 || str2 == str3) {

            throw new Error();

        }

        if (! (str1.equals(str2) && str1.equals(str3))) {

            throw new Error();

        }

        Foo foo = (Foo) oin.readObject();

        if ((foo.shared1 != foo.shared2) ||

            (foo.shared1 == foo.unshared1) ||

            (foo.shared1 == foo.unshared2) ||

            (foo.shared2 == foo.unshared1) ||

            (foo.shared2 == foo.unshared2) ||

            (foo.unshared1 == foo.unshared2))

        {

            throw new Error();

        }

        // write out object to be read by Read.main()

        oout = new ObjectOutputStream(new FileOutputStream("tmp.ser"));

        oout.writeObject(new Bar(str1));

        oout.writeObject(str1);

        oout.close();

    }

}