/*

 * Copyright (c) 1998, 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

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 */

/* @test

   @bug 4130097

   @summary toUpperCase and toLowerCase always return a new String,

            whereas if there is no conversion that needs to be done,

            they should be returning the same instance.

   @author James Bond/007

*/

public class CaseConvertSameInstance {

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

        /* these two are the real tests for this bug. */

        if ("foobar".toLowerCase() != "foobar")

            throw new Exception("toLowerCase returned different object");

        if ("FOOBAR".toUpperCase() != "FOOBAR")

            throw new Exception("toUpperCase returned different object");

        /* sanity test toLowerCase with some border conditions. */

        if (!("FooBar".toLowerCase().equals("foobar")))

            throw new Exception("toLowerCase broken");

        if (!("fooBar".toLowerCase().equals("foobar")))

            throw new Exception("toLowerCase broken");

        if (!("foobaR".toLowerCase().equals("foobar")))

            throw new Exception("toLowerCase broken");

        if (!("FOOBAR".toLowerCase().equals("foobar")))

            throw new Exception("toLowerCase broken");

        /* sanity test toUpperCase with some border conditions. */

        if (!("FooBar".toUpperCase().equals("FOOBAR")))

            throw new Exception("toUpperCase broken");

        if (!("fooBar".toUpperCase().equals("FOOBAR")))

            throw new Exception("toUpperCase broken");

        if (!("foobaR".toUpperCase().equals("FOOBAR")))

            throw new Exception("toUpperCase broken");

        if (!("foobar".toUpperCase().equals("FOOBAR")))

            throw new Exception("toUpperCase broken");

    }

}