/*

 * 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.

 *

 */

/* @test

 * @bug 4228592

 * @summary Ensure that ObjectInputStream properly skips over block data when a

 *          class that defines readObject() or readExternal() fails to read all

 *          of the data written by the corresponding writeObject() or

 *          writeExternal() method.

 */

import java.io.*;

class MismatchedRead implements Serializable {

    int i;

    float f;

    MismatchedRead(int i, float f) {

        this.i = i;

        this.f = f;

    }

    private void writeObject(ObjectOutputStream out) throws IOException {

        out.writeInt(i);

        out.writeFloat(f);

        out.writeUTF("skip me");

    }

    private void readObject(ObjectInputStream in)

        throws IOException, ClassNotFoundException

    {

        i = in.readInt();

        f = in.readFloat();

    }

    public boolean equals(Object obj) {

        if (! (obj instanceof MismatchedRead))

            return false;

        MismatchedRead other = (MismatchedRead) obj;

        return (i == other.i && f == other.f);

    }

}

class MismatchedReadExternal implements Externalizable {

    int i;

    float f;

    public MismatchedReadExternal() {

        this(0, (float) 0.0);

    }

    MismatchedReadExternal(int i, float f) {

        this.i = i;

        this.f = f;

    }

    public void writeExternal(ObjectOutput out) throws IOException {

        out.writeInt(i);

        out.writeFloat(f);

        out.writeUTF("skip another");

    }

    public void readExternal(ObjectInput in) throws IOException {

        i = in.readInt();

        f = in.readFloat();

    }

    public boolean equals(Object obj) {

        if (! (obj instanceof MismatchedReadExternal))

            return false;

        MismatchedReadExternal other = (MismatchedReadExternal) obj;

        return (i == other.i && f == other.f);

    }

}

class InnocentBystander implements Serializable {

    String s;

    InnocentBystander(String s) {

        this.s = s;

    }

    public boolean equals(Object obj) {

        if (! (obj instanceof InnocentBystander))

            return false;

        InnocentBystander other = (InnocentBystander) obj;

        if (s != null)

            return s.equals(other.s);

        return (s == other.s);

    }

}

public class SkipToEndOfBlockData {

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

        ObjectOutputStream oout;

        ObjectInputStream oin;

        ByteArrayOutputStream bout;

        ByteArrayInputStream bin;

        MismatchedRead mr, mrcopy;

        MismatchedReadExternal mre, mrecopy;

        InnocentBystander ib, ibcopy;

        bout = new ByteArrayOutputStream();

        oout = new ObjectOutputStream(bout);

        mr = new MismatchedRead(1, (float) 2.34);

        mre = new MismatchedReadExternal(5, (float) 6.78);

        ib = new InnocentBystander("foo");

        oout.writeObject(mr);

        oout.writeObject(mre);

        oout.writeObject(ib);

        oout.flush();

        bin = new ByteArrayInputStream(bout.toByteArray());

        oin = new ObjectInputStream(bin);

        mrcopy = (MismatchedRead) oin.readObject();

        mrecopy = (MismatchedReadExternal) oin.readObject();

        ibcopy = (InnocentBystander) oin.readObject();

        if (! (mr.equals(mrcopy) && mre.equals(mrecopy) && ib.equals(ibcopy)))

            throw new Error("copy not equal to original");

    }

}