1/*
2 * Copyright (c) 1999, 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/*
25 * @test
26 * @bug     4216997
27 * @summary Cloning a subclass of LinkedList results in an object that isn't
28 *          an instance of the subclass.  The same applies to TreeSet and
29 *          TreeMap.
30 */
31
32import java.util.*;
33
34public class Clone {
35    public static void main(String[] args) {
36        LinkedList2 l = new LinkedList2();
37        LinkedList2 lClone = (LinkedList2) l.clone();
38        if (!(l.equals(lClone) && lClone.equals(l)))
39            throw new RuntimeException("LinkedList.clone() is broken 1.");
40        l.add("a");
41        lClone = (LinkedList2) l.clone();
42        if (!(l.equals(lClone) && lClone.equals(l)))
43            throw new RuntimeException("LinkedList.clone() is broken 2.");
44        l.add("b");
45        lClone = (LinkedList2) l.clone();
46        if (!(l.equals(lClone) && lClone.equals(l)))
47            throw new RuntimeException("LinkedList.clone() is broken 2.");
48
49
50        TreeSet2 s = new TreeSet2();
51        TreeSet2 sClone = (TreeSet2) s.clone();
52        if (!(s.equals(sClone) && sClone.equals(s)))
53            throw new RuntimeException("TreeSet.clone() is broken.");
54        s.add("a");
55        sClone = (TreeSet2) s.clone();
56        if (!(s.equals(sClone) && sClone.equals(s)))
57            throw new RuntimeException("TreeSet.clone() is broken.");
58        s.add("b");
59        sClone = (TreeSet2) s.clone();
60        if (!(s.equals(sClone) && sClone.equals(s)))
61            throw new RuntimeException("TreeSet.clone() is broken.");
62
63        TreeMap2 m = new TreeMap2();
64        TreeMap2 mClone = (TreeMap2) m.clone();
65        if (!(m.equals(mClone) && mClone.equals(m)))
66            throw new RuntimeException("TreeMap.clone() is broken.");
67        m.put("a", "b");
68        mClone = (TreeMap2) m.clone();
69        if (!(m.equals(mClone) && mClone.equals(m)))
70            throw new RuntimeException("TreeMap.clone() is broken.");
71        m.put("c", "d");
72        mClone = (TreeMap2) m.clone();
73        if (!(m.equals(mClone) && mClone.equals(m)))
74            throw new RuntimeException("TreeMap.clone() is broken.");
75    }
76
77    private static class LinkedList2 extends LinkedList {}
78    private static class TreeSet2    extends TreeSet {}
79    private static class TreeMap2    extends TreeMap {}
80}
81