J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2005 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 21 | * have any questions. |
| 22 | */ |
| 23 | |
| 24 | /* |
| 25 | * @test |
| 26 | * @bug 6306829 |
| 27 | * @summary Verify assertions in get() javadocs |
| 28 | * @author Martin Buchholz |
| 29 | */ |
| 30 | |
| 31 | import java.io.*; |
| 32 | import java.util.*; |
| 33 | import java.util.concurrent.*; |
| 34 | import java.util.concurrent.atomic.*; |
| 35 | |
| 36 | public class Get { |
| 37 | |
| 38 | private static void realMain(String[] args) throws Throwable { |
| 39 | testMap(new Hashtable<Character,Boolean>()); |
| 40 | testMap(new HashMap<Character,Boolean>()); |
| 41 | testMap(new IdentityHashMap<Character,Boolean>()); |
| 42 | testMap(new LinkedHashMap<Character,Boolean>()); |
| 43 | testMap(new ConcurrentHashMap<Character,Boolean>()); |
| 44 | testMap(new WeakHashMap<Character,Boolean>()); |
| 45 | testMap(new TreeMap<Character,Boolean>()); |
| 46 | testMap(new ConcurrentSkipListMap<Character,Boolean>()); |
| 47 | } |
| 48 | |
| 49 | private static void put(Map<Character,Boolean> m, |
| 50 | Character key, Boolean value, |
| 51 | Boolean oldValue) { |
| 52 | if (oldValue != null) { |
| 53 | check(m.containsValue(oldValue)); |
| 54 | check(m.values().contains(oldValue)); |
| 55 | } |
| 56 | equal(m.put(key, value), oldValue); |
| 57 | equal(m.get(key), value); |
| 58 | check(m.containsKey(key)); |
| 59 | check(m.keySet().contains(key)); |
| 60 | check(m.containsValue(value)); |
| 61 | check(m.values().contains(value)); |
| 62 | check(! m.isEmpty()); |
| 63 | } |
| 64 | |
| 65 | private static void testMap(Map<Character,Boolean> m) { |
| 66 | // We verify following assertions in get(Object) method javadocs |
| 67 | boolean permitsNullKeys = (! (m instanceof ConcurrentMap || |
| 68 | m instanceof Hashtable || |
| 69 | m instanceof SortedMap)); |
| 70 | boolean permitsNullValues = (! (m instanceof ConcurrentMap || |
| 71 | m instanceof Hashtable)); |
| 72 | boolean usesIdentity = m instanceof IdentityHashMap; |
| 73 | |
| 74 | System.out.println(m.getClass()); |
| 75 | put(m, 'A', true, null); |
| 76 | put(m, 'A', false, true); // Guaranteed identical by JLS |
| 77 | put(m, 'B', true, null); |
| 78 | put(m, new Character('A'), false, usesIdentity ? null : false); |
| 79 | if (permitsNullKeys) { |
| 80 | try { |
| 81 | put(m, null, true, null); |
| 82 | put(m, null, false, true); |
| 83 | } |
| 84 | catch (Throwable t) { unexpected(t); } |
| 85 | } else { |
| 86 | try { m.get(null); fail(); } |
| 87 | catch (NullPointerException e) {} |
| 88 | catch (Throwable t) { unexpected(t); } |
| 89 | |
| 90 | try { m.put(null, true); fail(); } |
| 91 | catch (NullPointerException e) {} |
| 92 | catch (Throwable t) { unexpected(t); } |
| 93 | } |
| 94 | if (permitsNullValues) { |
| 95 | try { |
| 96 | put(m, 'C', null, null); |
| 97 | put(m, 'C', true, null); |
| 98 | put(m, 'C', null, true); |
| 99 | } |
| 100 | catch (Throwable t) { unexpected(t); } |
| 101 | } else { |
| 102 | try { m.put('A', null); fail(); } |
| 103 | catch (NullPointerException e) {} |
| 104 | catch (Throwable t) { unexpected(t); } |
| 105 | |
| 106 | try { m.put('C', null); fail(); } |
| 107 | catch (NullPointerException e) {} |
| 108 | catch (Throwable t) { unexpected(t); } |
| 109 | } |
| 110 | } |
| 111 | |
| 112 | //--------------------- Infrastructure --------------------------- |
| 113 | static volatile int passed = 0, failed = 0; |
| 114 | static void pass() { passed++; } |
| 115 | static void fail() { failed++; Thread.dumpStack(); } |
| 116 | static void fail(String msg) { System.out.println(msg); fail(); } |
| 117 | static void unexpected(Throwable t) { failed++; t.printStackTrace(); } |
| 118 | static void check(boolean cond) { if (cond) pass(); else fail(); } |
| 119 | static void equal(Object x, Object y) { |
| 120 | if (x == null ? y == null : x.equals(y)) pass(); |
| 121 | else {System.out.println(x + " not equal to " + y); fail(); }} |
| 122 | |
| 123 | public static void main(String[] args) throws Throwable { |
| 124 | try { realMain(args); } catch (Throwable t) { unexpected(t); } |
| 125 | |
| 126 | System.out.printf("%nPassed = %d, failed = %d%n%n", passed, failed); |
| 127 | if (failed > 0) throw new Exception("Some tests failed"); |
| 128 | } |
| 129 | } |