Bjorn Bringert | 1d580d0 | 2012-05-07 16:50:46 +0100 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (C) 2007 The Guava Authors |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | package com.google.common.collect; |
| 18 | |
| 19 | import static com.google.common.base.Preconditions.checkNotNull; |
| 20 | |
| 21 | import com.google.common.collect.Synchronized.SynchronizedCollection; |
| 22 | import com.google.common.collect.Synchronized.SynchronizedSet; |
| 23 | import com.google.common.testing.SerializableTester; |
| 24 | |
| 25 | import junit.framework.TestCase; |
| 26 | |
| 27 | import java.io.Serializable; |
| 28 | import java.util.Collection; |
| 29 | import java.util.HashMap; |
| 30 | import java.util.Map; |
| 31 | import java.util.Set; |
| 32 | |
| 33 | /** |
| 34 | * Tests for {@code Synchronized#map}. |
| 35 | * |
| 36 | * @author Mike Bostock |
| 37 | */ |
| 38 | public class SynchronizedMapTest extends TestCase { |
| 39 | public final Object mutex = new Integer(1); // something Serializable |
| 40 | |
| 41 | protected <K, V> Map<K, V> create() { |
| 42 | TestMap<K, V> inner = new TestMap<K, V>(new HashMap<K, V>(), mutex); |
| 43 | Map<K, V> outer = Synchronized.map(inner, mutex); |
| 44 | return outer; |
| 45 | } |
| 46 | |
| 47 | static class TestMap<K, V> extends ForwardingMap<K, V> |
| 48 | implements Serializable { |
| 49 | public final Object mutex; |
| 50 | private Map<K, V> delegate; |
| 51 | public TestMap(Map<K, V> delegate, Object mutex) { |
| 52 | checkNotNull(mutex); |
| 53 | this.delegate = delegate; |
| 54 | this.mutex = mutex; |
| 55 | } |
| 56 | |
| 57 | @Override protected Map<K, V> delegate() { |
| 58 | return delegate; |
| 59 | } |
| 60 | |
| 61 | @Override public int size() { |
| 62 | assertTrue(Thread.holdsLock(mutex)); |
| 63 | return super.size(); |
| 64 | } |
| 65 | |
| 66 | @Override public boolean isEmpty() { |
| 67 | assertTrue(Thread.holdsLock(mutex)); |
| 68 | return super.isEmpty(); |
| 69 | } |
| 70 | |
| 71 | @Override public V remove(Object object) { |
| 72 | assertTrue(Thread.holdsLock(mutex)); |
| 73 | return super.remove(object); |
| 74 | } |
| 75 | |
| 76 | @Override public void clear() { |
| 77 | assertTrue(Thread.holdsLock(mutex)); |
| 78 | super.clear(); |
| 79 | } |
| 80 | |
| 81 | @Override public boolean containsKey(Object key) { |
| 82 | assertTrue(Thread.holdsLock(mutex)); |
| 83 | return super.containsKey(key); |
| 84 | } |
| 85 | |
| 86 | @Override public boolean containsValue(Object value) { |
| 87 | assertTrue(Thread.holdsLock(mutex)); |
| 88 | return super.containsValue(value); |
| 89 | } |
| 90 | |
| 91 | @Override public V get(Object key) { |
| 92 | assertTrue(Thread.holdsLock(mutex)); |
| 93 | return super.get(key); |
| 94 | } |
| 95 | |
| 96 | @Override public V put(K key, V value) { |
| 97 | assertTrue(Thread.holdsLock(mutex)); |
| 98 | return super.put(key, value); |
| 99 | } |
| 100 | |
| 101 | @Override public void putAll(Map<? extends K, ? extends V> map) { |
| 102 | assertTrue(Thread.holdsLock(mutex)); |
| 103 | super.putAll(map); |
| 104 | } |
| 105 | |
| 106 | @Override public Set<K> keySet() { |
| 107 | assertTrue(Thread.holdsLock(mutex)); |
| 108 | return super.keySet(); |
| 109 | } |
| 110 | |
| 111 | @Override public Collection<V> values() { |
| 112 | assertTrue(Thread.holdsLock(mutex)); |
| 113 | return super.values(); |
| 114 | } |
| 115 | |
| 116 | @Override public Set<Entry<K, V>> entrySet() { |
| 117 | assertTrue(Thread.holdsLock(mutex)); |
| 118 | return super.entrySet(); |
| 119 | } |
| 120 | |
| 121 | @Override public boolean equals(Object obj) { |
| 122 | assertTrue(Thread.holdsLock(mutex)); |
| 123 | return super.equals(obj); |
| 124 | } |
| 125 | |
| 126 | @Override public int hashCode() { |
| 127 | assertTrue(Thread.holdsLock(mutex)); |
| 128 | return super.hashCode(); |
| 129 | } |
| 130 | |
| 131 | @Override public String toString() { |
| 132 | assertTrue(Thread.holdsLock(mutex)); |
| 133 | return super.toString(); |
| 134 | } |
| 135 | |
| 136 | private static final long serialVersionUID = 0; |
| 137 | } |
| 138 | |
| 139 | /* |
| 140 | * This is somewhat of a weak test; we verify that all of the methods are |
| 141 | * correct, but not that they're actually forwarding correctly. We also rely |
| 142 | * on the other tests (e.g., SynchronizedSetTest) to verify that the |
| 143 | * collection views are synchronized correctly. |
| 144 | */ |
| 145 | |
| 146 | public void testSize() { |
| 147 | create().size(); |
| 148 | } |
| 149 | |
| 150 | public void testIsEmpty() { |
| 151 | create().isEmpty(); |
| 152 | } |
| 153 | |
| 154 | public void testRemove() { |
| 155 | create().remove(null); |
| 156 | } |
| 157 | |
| 158 | public void testClear() { |
| 159 | create().clear(); |
| 160 | } |
| 161 | |
| 162 | public void testContainsKey() { |
| 163 | create().containsKey(null); |
| 164 | } |
| 165 | |
| 166 | public void testContainsValue() { |
| 167 | create().containsValue(null); |
| 168 | } |
| 169 | |
| 170 | public void testGet() { |
| 171 | create().get(null); |
| 172 | } |
| 173 | |
| 174 | public void testPut() { |
| 175 | create().put(null, null); |
| 176 | } |
| 177 | |
| 178 | public void testPutAll() { |
| 179 | create().putAll(new HashMap<String, Integer>()); |
| 180 | } |
| 181 | |
| 182 | public void testKeySet() { |
| 183 | Map<String, Integer> map = create(); |
| 184 | Set<String> keySet = map.keySet(); |
| 185 | assertTrue(keySet instanceof SynchronizedSet); |
| 186 | assertSame(mutex, ((SynchronizedSet<?>) keySet).mutex); |
| 187 | } |
| 188 | |
| 189 | public void testValues() { |
| 190 | Map<String, Integer> map = create(); |
| 191 | Collection<Integer> values = map.values(); |
| 192 | assertTrue(values instanceof SynchronizedCollection); |
| 193 | assertSame(mutex, ((SynchronizedCollection<?>) values).mutex); |
| 194 | } |
| 195 | |
| 196 | public void testEntrySet() { |
| 197 | Map<String, Integer> map = create(); |
| 198 | Set<Map.Entry<String, Integer>> entrySet = map.entrySet(); |
| 199 | assertTrue(entrySet instanceof SynchronizedSet); |
| 200 | assertSame(mutex, ((SynchronizedSet<?>) entrySet).mutex); |
| 201 | } |
| 202 | |
| 203 | public void testEquals() { |
| 204 | create().equals(new HashMap<String, Integer>()); |
| 205 | } |
| 206 | |
| 207 | public void testHashCode() { |
| 208 | create().hashCode(); |
| 209 | } |
| 210 | |
| 211 | public void testToString() { |
| 212 | create().toString(); |
| 213 | } |
| 214 | |
| 215 | public void testSerialization() { |
| 216 | SerializableTester.reserializeAndAssert(create()); |
| 217 | } |
| 218 | } |