/*

 * Copyright (c) 2005, 2012, 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 6783290

 * @summary Test correct reading of an empty Descriptor.

 * @author Jaroslav Bachorik

 * @run clean SerializationTest1

 * @run build SerializationTest1

 * @run main SerializationTest1

 */

import java.io.*;

import javax.management.*;

public class SerializationTest1 {

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

        MBeanInfo mi1 = new MBeanInfo("",

                                      "",

                                      new MBeanAttributeInfo[]{},

                                      new MBeanConstructorInfo[]{},

                                      new MBeanOperationInfo[]{},

                                      new MBeanNotificationInfo[]{},

                                      ImmutableDescriptor.EMPTY_DESCRIPTOR);

        test(mi1);

        MBeanFeatureInfo mfi2 = new MBeanFeatureInfo("",

                                                     "",

                                                     ImmutableDescriptor.EMPTY_DESCRIPTOR);

        test(mfi2);

    }

    public static void test(Object obj) throws Exception {

        ByteArrayOutputStream baos = new ByteArrayOutputStream();

        ObjectOutputStream oos = new ObjectOutputStream(baos);

        oos.writeObject(obj);

        final boolean[] failed = new boolean[]{false};

        ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray());

        final ObjectInputStream ois = new ObjectInputStream(bais) {

            protected Class<?> resolveClass(ObjectStreamClass desc) throws IOException, ClassNotFoundException {

                System.out.println("*** " + desc.getName());

                if (desc.getName().equals("[Ljava.lang.Object;")) { // javax.management.Descriptor fields

                    Thread.dumpStack();

                    for(StackTraceElement e : Thread.currentThread().getStackTrace()) { // checking for the deserialization location

                        if (e.getMethodName().equals("skipCustomData")) { // indicates the presence of unread values from the custom object serialization

                            failed[0] = true;

                        }

                    }

                }

                return super.resolveClass(desc); //To change body of generated methods, choose Tools | Templates.

            }

        };

        Object newObj = ois.readObject();

        if (failed[0]) {

            throw new RuntimeException("Zero-length descriptor not read back");

        }

    }

}