blob: ac488462d0ec859fdf1ac7719ddbcf9e1555006f (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
|
/*
* Copyright (C) 2007 The Guava Authors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.google.common.collect;
import java.util.ArrayDeque;
import java.util.Collection;
import java.util.Iterator;
import java.util.Queue;
import junit.framework.TestCase;
/**
* Tests for {@link Synchronized#queue} and {@link Queues#synchronizedQueue}.
*
* @author Kurt Alfred Kluever
*/
public class SynchronizedQueueTest extends TestCase {
protected Queue<String> create() {
TestQueue<String> inner = new TestQueue<>();
Queue<String> outer = Synchronized.queue(inner, null);
inner.mutex = outer;
outer.add("foo"); // necessary because we try to remove elements later on
return outer;
}
private static final class TestQueue<E> implements Queue<E> {
private final Queue<E> delegate = Lists.newLinkedList();
public Object mutex;
@Override
public boolean offer(E o) {
assertTrue(Thread.holdsLock(mutex));
return delegate.offer(o);
}
@Override
public E poll() {
assertTrue(Thread.holdsLock(mutex));
return delegate.poll();
}
@Override
public E remove() {
assertTrue(Thread.holdsLock(mutex));
return delegate.remove();
}
@Override
public boolean remove(Object object) {
assertTrue(Thread.holdsLock(mutex));
return delegate.remove(object);
}
@Override
public E peek() {
assertTrue(Thread.holdsLock(mutex));
return delegate.peek();
}
@Override
public E element() {
assertTrue(Thread.holdsLock(mutex));
return delegate.element();
}
@Override
public Iterator<E> iterator() {
// We explicitly don't lock for iterator()
assertFalse(Thread.holdsLock(mutex));
return delegate.iterator();
}
@Override
public int size() {
assertTrue(Thread.holdsLock(mutex));
return delegate.size();
}
@Override
public boolean removeAll(Collection<?> collection) {
assertTrue(Thread.holdsLock(mutex));
return delegate.removeAll(collection);
}
@Override
public boolean isEmpty() {
assertTrue(Thread.holdsLock(mutex));
return delegate.isEmpty();
}
@Override
public boolean contains(Object object) {
assertTrue(Thread.holdsLock(mutex));
return delegate.contains(object);
}
@Override
public boolean add(E element) {
assertTrue(Thread.holdsLock(mutex));
return delegate.add(element);
}
@Override
public boolean containsAll(Collection<?> collection) {
assertTrue(Thread.holdsLock(mutex));
return delegate.containsAll(collection);
}
@Override
public boolean addAll(Collection<? extends E> collection) {
assertTrue(Thread.holdsLock(mutex));
return delegate.addAll(collection);
}
@Override
public boolean retainAll(Collection<?> collection) {
assertTrue(Thread.holdsLock(mutex));
return delegate.retainAll(collection);
}
@Override
public void clear() {
assertTrue(Thread.holdsLock(mutex));
delegate.clear();
}
@Override
public Object[] toArray() {
assertTrue(Thread.holdsLock(mutex));
return delegate.toArray();
}
@Override
public <T> T[] toArray(T[] array) {
assertTrue(Thread.holdsLock(mutex));
return delegate.toArray(array);
}
private static final long serialVersionUID = 0;
}
public void testHoldsLockOnAllOperations() {
create().element();
create().offer("foo");
create().peek();
create().poll();
create().remove();
create().add("foo");
create().addAll(ImmutableList.of("foo"));
create().clear();
boolean unused = create().contains("foo");
boolean unused2 = create().containsAll(ImmutableList.of("foo"));
create().equals(new ArrayDeque<>(ImmutableList.of("foo")));
create().hashCode();
create().isEmpty();
create().iterator();
create().remove("foo");
create().removeAll(ImmutableList.of("foo"));
create().retainAll(ImmutableList.of("foo"));
create().size();
create().toArray();
create().toArray(new String[] {"foo"});
}
}
|
