1/*
2 * Copyright (c) 2012, 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 * Portions Copyright (c) 2012, IBM Corporation
26 */
27
28/*
29 * @test
30 * @bug 7123229
31 * @summary (coll) EnumMap.containsValue(null) returns true
32 * @author ngmr
33 */
34
35import java.util.EnumMap;
36import java.util.Map;
37
38public class UniqueNullValue {
39    static enum TestEnum { e00, e01 }
40
41    public static void main(String[] args) {
42        Map<TestEnum, Integer> map = new EnumMap<>(TestEnum.class);
43
44        map.put(TestEnum.e00, 0);
45        if (false == map.containsValue(0)) {
46            throw new RuntimeException("EnumMap unexpectedly missing 0 value");
47        }
48        if (map.containsValue(null)) {
49            throw new RuntimeException("EnumMap unexpectedly holds null value");
50        }
51
52        map.put(TestEnum.e00, null);
53        if (map.containsValue(0)) {
54            throw new RuntimeException("EnumMap unexpectedly holds 0 value");
55        }
56        if (false == map.containsValue(null)) {
57            throw new RuntimeException("EnumMap unexpectedly missing null value");
58        }
59    }
60}
61