/*

 * Copyright (c) 2010, 2011, 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.

 *

 * -------------------------------------------

 *

 * Portions Copyright (c) 2010, 2011 IBM Corporation

 */

/*

 * @test

 * @bug 6927486

 * @summary A serialized Hashtable can be de-serialized properly.

 * @author Neil Richards <neil.richards@ngmr.net>, <neil_richards@uk.ibm.com>

 */

import java.io.ByteArrayInputStream;

import java.io.ByteArrayOutputStream;

import java.io.IOException;

import java.io.ObjectInputStream;

import java.io.ObjectOutputStream;

import java.io.PrintWriter;

import java.io.StringWriter;

import java.util.Hashtable;

public class SimpleSerialization {

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

        Hashtable<String, String> h1 = new Hashtable<>();

        h1.put("key", "value");

        final ByteArrayOutputStream baos = new ByteArrayOutputStream();

        final ObjectOutputStream oos = new ObjectOutputStream(baos);

        oos.writeObject(h1);

        oos.close();

        final byte[] data = baos.toByteArray();

        final ByteArrayInputStream bais = new ByteArrayInputStream(data);

        final ObjectInputStream ois = new ObjectInputStream(bais);

        final Object deserializedObject = ois.readObject();

        ois.close();

        if (false == h1.equals(deserializedObject)) {

            throw new RuntimeException(getFailureText(h1, deserializedObject));

        }

    }

    private static String getFailureText(final Object orig, final Object copy) {

        final StringWriter sw = new StringWriter();

        final PrintWriter pw = new PrintWriter(sw);

        pw.println("Test FAILED: Deserialized object is not equal to the original object");

        pw.print("\tOriginal: ");

        printObject(pw, orig).println();

        pw.print("\tCopy:     ");

        printObject(pw, copy).println();

        pw.close();

        return sw.toString();

    }

    private static PrintWriter printObject(final PrintWriter pw, final Object o) {

        pw.printf("%s@%08x", o.getClass().getName(), System.identityHashCode(o));

        return pw;

    }

}