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
|
/*
* Copyright (C) 2009 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 static java.util.Arrays.asList;
import com.google.common.base.Function;
import com.google.common.collect.testing.CollectionTestSuiteBuilder;
import com.google.common.collect.testing.MinimalCollection;
import com.google.common.collect.testing.TestStringCollectionGenerator;
import com.google.common.collect.testing.features.CollectionFeature;
import com.google.common.collect.testing.features.CollectionSize;
import com.google.common.testing.ForwardingWrapperTester;
import java.util.Collection;
import junit.framework.Test;
import junit.framework.TestCase;
import junit.framework.TestSuite;
/**
* Tests for {@link ForwardingCollection}.
*
* @author Robert Konigsberg
* @author Hayward Chan
* @author Louis Wasserman
*/
public class ForwardingCollectionTest extends TestCase {
static final class StandardImplForwardingCollection<T> extends ForwardingCollection<T> {
private final Collection<T> backingCollection;
StandardImplForwardingCollection(Collection<T> backingCollection) {
this.backingCollection = backingCollection;
}
@Override
protected Collection<T> delegate() {
return backingCollection;
}
@Override
public boolean addAll(Collection<? extends T> collection) {
return standardAddAll(collection);
}
@Override
public void clear() {
standardClear();
}
@Override
public boolean contains(Object object) {
return standardContains(object);
}
@Override
public boolean containsAll(Collection<?> collection) {
return standardContainsAll(collection);
}
@Override
public boolean remove(Object object) {
return standardRemove(object);
}
@Override
public boolean removeAll(Collection<?> collection) {
return standardRemoveAll(collection);
}
@Override
public boolean retainAll(Collection<?> collection) {
return standardRetainAll(collection);
}
@Override
public Object[] toArray() {
return standardToArray();
}
@Override
public <T> T[] toArray(T[] array) {
return standardToArray(array);
}
@Override
public String toString() {
return standardToString();
}
}
public static Test suite() {
TestSuite suite = new TestSuite();
suite.addTestSuite(ForwardingCollectionTest.class);
suite.addTest(
CollectionTestSuiteBuilder.using(
new TestStringCollectionGenerator() {
@Override
protected Collection<String> create(String[] elements) {
return new StandardImplForwardingCollection<>(
Lists.newLinkedList(asList(elements)));
}
})
.named("ForwardingCollection[LinkedList] with standard implementations")
.withFeatures(
CollectionSize.ANY,
CollectionFeature.ALLOWS_NULL_VALUES,
CollectionFeature.GENERAL_PURPOSE)
.createTestSuite());
suite.addTest(
CollectionTestSuiteBuilder.using(
new TestStringCollectionGenerator() {
@Override
protected Collection<String> create(String[] elements) {
return new StandardImplForwardingCollection<>(MinimalCollection.of(elements));
}
})
.named("ForwardingCollection[MinimalCollection] with standard" + " implementations")
.withFeatures(CollectionSize.ANY, CollectionFeature.ALLOWS_NULL_VALUES)
.createTestSuite());
return suite;
}
@SuppressWarnings({"rawtypes", "unchecked"})
public void testForwarding() {
new ForwardingWrapperTester()
.testForwarding(
Collection.class,
new Function<Collection, Collection>() {
@Override
public Collection apply(Collection delegate) {
return wrap(delegate);
}
});
}
private static <T> Collection<T> wrap(final Collection<T> delegate) {
return new ForwardingCollection<T>() {
@Override
protected Collection<T> delegate() {
return delegate;
}
};
}
}
|
