1/*
2 * Copyright (c) 2011, 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) 2011 IBM Corporation
26 */
27
28/*
29 * @test
30 * @bug 6312706
31 * @summary Sets from Map.entrySet() return distinct objects for each Entry
32 * @author Neil Richards <neil.richards@ngmr.net>, <neil_richards@uk.ibm.com>
33 */
34
35import java.util.EnumMap;
36import java.util.HashSet;
37import java.util.Map;
38import java.util.Set;
39
40public class DistinctEntrySetElements {
41    static enum TestEnum { e00, e01, e02 }
42
43    public static void main(String[] args) throws Exception {
44        final EnumMap<TestEnum, String> enumMap = new EnumMap<>(TestEnum.class);
45
46        for (TestEnum e : TestEnum.values()) {
47            enumMap.put(e, e.name());
48        }
49
50        Set<Map.Entry<TestEnum, String>> entrySet = enumMap.entrySet();
51        HashSet<Map.Entry<TestEnum, String>> hashSet = new HashSet<>(entrySet);
52
53        if (false == hashSet.equals(entrySet)) {
54            throw new RuntimeException("Test FAILED: Sets are not equal.");
55        }
56        if (hashSet.hashCode() != entrySet.hashCode()) {
57            throw new RuntimeException("Test FAILED: Set's hashcodes are not equal.");
58        }
59    }
60}
61