/*

 * 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 4931314

 * @summary Verify that a ClassNotFoundException thrown by the

 *          readClassDescriptor method is reflected to the caller as an

 *          InvalidClassException with the ClassNotFoundException as its cause.

 */

import java.io.*;

class CNFInputStream extends ObjectInputStream {

    CNFInputStream(InputStream in) throws IOException {

        super(in);

    }

    protected ObjectStreamClass readClassDescriptor()

        throws IOException, ClassNotFoundException

    {

        throw new ClassNotFoundException("foobar");

    }

}

public class CNFException {

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

        ByteArrayOutputStream bout = new ByteArrayOutputStream();

        ObjectOutputStream oout = new ObjectOutputStream(bout);

        oout.close();

        ObjectInputStream oin =

            new CNFInputStream(new ByteArrayInputStream(bout.toByteArray()));

        try {

            oin.readObject();

            throw new Error("expected InvalidClassException");

        } catch (InvalidClassException e) {

            Throwable cause = e.getCause();

            if (!(cause instanceof ClassNotFoundException)) {

                throw new Error(

                    "expected ClassNotFoundException as cause, not " + cause);

            }

        }

    }

}