1/*
2 * Copyright (c) 1998, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24/* @test
25   @bug 4130097
26   @summary toUpperCase and toLowerCase always return a new String,
27            whereas if there is no conversion that needs to be done,
28            they should be returning the same instance.
29   @author James Bond/007
30*/
31public class CaseConvertSameInstance {
32    public static void main(String[] args) throws Exception {
33        /* these two are the real tests for this bug. */
34        if ("foobar".toLowerCase() != "foobar")
35            throw new Exception("toLowerCase returned different object");
36        if ("FOOBAR".toUpperCase() != "FOOBAR")
37            throw new Exception("toUpperCase returned different object");
38
39        /* sanity test toLowerCase with some border conditions. */
40        if (!("FooBar".toLowerCase().equals("foobar")))
41            throw new Exception("toLowerCase broken");
42        if (!("fooBar".toLowerCase().equals("foobar")))
43            throw new Exception("toLowerCase broken");
44        if (!("foobaR".toLowerCase().equals("foobar")))
45            throw new Exception("toLowerCase broken");
46        if (!("FOOBAR".toLowerCase().equals("foobar")))
47            throw new Exception("toLowerCase broken");
48
49        /* sanity test toUpperCase with some border conditions. */
50        if (!("FooBar".toUpperCase().equals("FOOBAR")))
51            throw new Exception("toUpperCase broken");
52        if (!("fooBar".toUpperCase().equals("FOOBAR")))
53            throw new Exception("toUpperCase broken");
54        if (!("foobaR".toUpperCase().equals("FOOBAR")))
55            throw new Exception("toUpperCase broken");
56        if (!("foobar".toUpperCase().equals("FOOBAR")))
57            throw new Exception("toUpperCase broken");
58    }
59}
60