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
|
/*
* Copyright (C) 2012 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 com.google.common.truth.Truth.assertThat;
import static java.util.stream.Collectors.*;
import com.google.common.annotations.GwtIncompatible;
import com.google.common.collect.testing.SetTestSuiteBuilder;
import com.google.common.collect.testing.TestStringSetGenerator;
import com.google.common.collect.testing.features.CollectionFeature;
import com.google.common.collect.testing.features.CollectionSize;
import com.google.common.collect.testing.features.Feature;
import java.util.Arrays;
import java.util.List;
import java.util.Set;
import junit.framework.Test;
import junit.framework.TestCase;
import junit.framework.TestSuite;
/**
* Tests for CompactHashSet.
*
* @author Dimitris Andreou
*/
@GwtIncompatible // java.util.Arrays#copyOf(Object[], int), java.lang.reflect.Array
public class CompactHashSetTest extends TestCase {
public static Test suite() {
List<Feature<?>> allFeatures =
Arrays.<Feature<?>>asList(
CollectionSize.ANY,
CollectionFeature.ALLOWS_NULL_VALUES,
CollectionFeature.FAILS_FAST_ON_CONCURRENT_MODIFICATION,
CollectionFeature.GENERAL_PURPOSE,
CollectionFeature.REMOVE_OPERATIONS,
CollectionFeature.SERIALIZABLE,
CollectionFeature.SUPPORTS_ADD,
CollectionFeature.SUPPORTS_REMOVE);
TestSuite suite = new TestSuite();
suite.addTestSuite(CompactHashSetTest.class);
suite.addTest(
SetTestSuiteBuilder.using(
new TestStringSetGenerator() {
@Override
protected Set<String> create(String[] elements) {
return CompactHashSet.create(Arrays.asList(elements));
}
})
.named("CompactHashSet")
.withFeatures(allFeatures)
.createTestSuite());
suite.addTest(
SetTestSuiteBuilder.using(
new TestStringSetGenerator() {
@Override
protected Set<String> create(String[] elements) {
CompactHashSet set = CompactHashSet.create(Arrays.asList(elements));
for (int i = 0; i < 100; i++) {
set.add(i);
}
for (int i = 0; i < 100; i++) {
set.remove(i);
}
set.trimToSize();
return set;
}
})
.named("CompactHashSet#TrimToSize")
.withFeatures(allFeatures)
.createTestSuite());
return suite;
}
public void testAllocArraysDefault() {
CompactHashSet<Integer> set = CompactHashSet.create();
assertThat(set.needsAllocArrays()).isTrue();
assertThat(set.elements).isNull();
set.add(1);
assertThat(set.needsAllocArrays()).isFalse();
assertThat(set.elements).hasLength(CompactHashing.DEFAULT_SIZE);
}
public void testAllocArraysExpectedSize() {
for (int i = 0; i <= CompactHashing.DEFAULT_SIZE; i++) {
CompactHashSet<Integer> set = CompactHashSet.createWithExpectedSize(i);
assertThat(set.needsAllocArrays()).isTrue();
assertThat(set.elements).isNull();
set.add(1);
assertThat(set.needsAllocArrays()).isFalse();
int expectedSize = Math.max(1, i);
assertThat(set.elements).hasLength(expectedSize);
}
}
}
|
