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
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
|
// Copyright 2018 The Abseil 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
//
// https://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.
#include "absl/container/flat_hash_set.h"
#include <cstdint>
#include <memory>
#include <utility>
#include <vector>
#include "gmock/gmock.h"
#include "gtest/gtest.h"
#include "absl/base/config.h"
#include "absl/container/internal/container_memory.h"
#include "absl/container/internal/hash_generator_testing.h"
#include "absl/container/internal/unordered_set_constructor_test.h"
#include "absl/container/internal/unordered_set_lookup_test.h"
#include "absl/container/internal/unordered_set_members_test.h"
#include "absl/container/internal/unordered_set_modifiers_test.h"
#include "absl/log/check.h"
#include "absl/memory/memory.h"
#include "absl/strings/string_view.h"
namespace absl {
ABSL_NAMESPACE_BEGIN
namespace container_internal {
namespace {
using ::absl::container_internal::hash_internal::Enum;
using ::absl::container_internal::hash_internal::EnumClass;
using ::testing::IsEmpty;
using ::testing::Pointee;
using ::testing::UnorderedElementsAre;
using ::testing::UnorderedElementsAreArray;
// Check that absl::flat_hash_set works in a global constructor.
struct BeforeMain {
BeforeMain() {
absl::flat_hash_set<int> x;
x.insert(1);
CHECK(!x.contains(0)) << "x should not contain 0";
CHECK(x.contains(1)) << "x should contain 1";
}
};
const BeforeMain before_main;
template <class T>
using Set =
absl::flat_hash_set<T, StatefulTestingHash, StatefulTestingEqual, Alloc<T>>;
using SetTypes =
::testing::Types<Set<int>, Set<std::string>, Set<Enum>, Set<EnumClass>>;
INSTANTIATE_TYPED_TEST_SUITE_P(FlatHashSet, ConstructorTest, SetTypes);
INSTANTIATE_TYPED_TEST_SUITE_P(FlatHashSet, LookupTest, SetTypes);
INSTANTIATE_TYPED_TEST_SUITE_P(FlatHashSet, MembersTest, SetTypes);
INSTANTIATE_TYPED_TEST_SUITE_P(FlatHashSet, ModifiersTest, SetTypes);
TEST(FlatHashSet, EmplaceString) {
std::vector<std::string> v = {"a", "b"};
absl::flat_hash_set<absl::string_view> hs(v.begin(), v.end());
EXPECT_THAT(hs, UnorderedElementsAreArray(v));
}
TEST(FlatHashSet, BitfieldArgument) {
union {
int n : 1;
};
n = 0;
absl::flat_hash_set<int> s = {n};
s.insert(n);
s.insert(s.end(), n);
s.insert({n});
s.erase(n);
s.count(n);
s.prefetch(n);
s.find(n);
s.contains(n);
s.equal_range(n);
}
TEST(FlatHashSet, MergeExtractInsert) {
struct Hash {
size_t operator()(const std::unique_ptr<int>& p) const { return *p; }
};
struct Eq {
bool operator()(const std::unique_ptr<int>& a,
const std::unique_ptr<int>& b) const {
return *a == *b;
}
};
absl::flat_hash_set<std::unique_ptr<int>, Hash, Eq> set1, set2;
set1.insert(absl::make_unique<int>(7));
set1.insert(absl::make_unique<int>(17));
set2.insert(absl::make_unique<int>(7));
set2.insert(absl::make_unique<int>(19));
EXPECT_THAT(set1, UnorderedElementsAre(Pointee(7), Pointee(17)));
EXPECT_THAT(set2, UnorderedElementsAre(Pointee(7), Pointee(19)));
set1.merge(set2);
EXPECT_THAT(set1, UnorderedElementsAre(Pointee(7), Pointee(17), Pointee(19)));
EXPECT_THAT(set2, UnorderedElementsAre(Pointee(7)));
auto node = set1.extract(absl::make_unique<int>(7));
EXPECT_TRUE(node);
EXPECT_THAT(node.value(), Pointee(7));
EXPECT_THAT(set1, UnorderedElementsAre(Pointee(17), Pointee(19)));
auto insert_result = set2.insert(std::move(node));
EXPECT_FALSE(node);
EXPECT_FALSE(insert_result.inserted);
EXPECT_TRUE(insert_result.node);
EXPECT_THAT(insert_result.node.value(), Pointee(7));
EXPECT_EQ(**insert_result.position, 7);
EXPECT_NE(insert_result.position->get(), insert_result.node.value().get());
EXPECT_THAT(set2, UnorderedElementsAre(Pointee(7)));
node = set1.extract(absl::make_unique<int>(17));
EXPECT_TRUE(node);
EXPECT_THAT(node.value(), Pointee(17));
EXPECT_THAT(set1, UnorderedElementsAre(Pointee(19)));
node.value() = absl::make_unique<int>(23);
insert_result = set2.insert(std::move(node));
EXPECT_FALSE(node);
EXPECT_TRUE(insert_result.inserted);
EXPECT_FALSE(insert_result.node);
EXPECT_EQ(**insert_result.position, 23);
EXPECT_THAT(set2, UnorderedElementsAre(Pointee(7), Pointee(23)));
}
bool IsEven(int k) { return k % 2 == 0; }
TEST(FlatHashSet, EraseIf) {
// Erase all elements.
{
flat_hash_set<int> s = {1, 2, 3, 4, 5};
EXPECT_EQ(erase_if(s, [](int) { return true; }), 5);
EXPECT_THAT(s, IsEmpty());
}
// Erase no elements.
{
flat_hash_set<int> s = {1, 2, 3, 4, 5};
EXPECT_EQ(erase_if(s, [](int) { return false; }), 0);
EXPECT_THAT(s, UnorderedElementsAre(1, 2, 3, 4, 5));
}
// Erase specific elements.
{
flat_hash_set<int> s = {1, 2, 3, 4, 5};
EXPECT_EQ(erase_if(s, [](int k) { return k % 2 == 1; }), 3);
EXPECT_THAT(s, UnorderedElementsAre(2, 4));
}
// Predicate is function reference.
{
flat_hash_set<int> s = {1, 2, 3, 4, 5};
EXPECT_EQ(erase_if(s, IsEven), 2);
EXPECT_THAT(s, UnorderedElementsAre(1, 3, 5));
}
// Predicate is function pointer.
{
flat_hash_set<int> s = {1, 2, 3, 4, 5};
EXPECT_EQ(erase_if(s, &IsEven), 2);
EXPECT_THAT(s, UnorderedElementsAre(1, 3, 5));
}
}
class PoisonInline {
int64_t data_;
public:
explicit PoisonInline(int64_t d) : data_(d) {
SanitizerPoisonObject(&data_);
}
PoisonInline(const PoisonInline& that) : PoisonInline(*that) {}
~PoisonInline() { SanitizerUnpoisonObject(&data_); }
int64_t operator*() const {
SanitizerUnpoisonObject(&data_);
const int64_t ret = data_;
SanitizerPoisonObject(&data_);
return ret;
}
template <typename H>
friend H AbslHashValue(H h, const PoisonInline& pi) {
return H::combine(std::move(h), *pi);
}
bool operator==(const PoisonInline& rhs) const { return **this == *rhs; }
};
// Tests that we don't touch the poison_ member of PoisonInline.
TEST(FlatHashSet, PoisonInline) {
PoisonInline a(0), b(1);
{ // basic usage
flat_hash_set<PoisonInline> set;
set.insert(a);
EXPECT_THAT(set, UnorderedElementsAre(a));
set.insert(b);
EXPECT_THAT(set, UnorderedElementsAre(a, b));
set.erase(a);
EXPECT_THAT(set, UnorderedElementsAre(b));
set.rehash(0); // shrink to inline
EXPECT_THAT(set, UnorderedElementsAre(b));
}
{ // test move constructor from inline to inline
flat_hash_set<PoisonInline> set;
set.insert(a);
flat_hash_set<PoisonInline> set2(std::move(set));
EXPECT_THAT(set2, UnorderedElementsAre(a));
}
{ // test move assignment from inline to inline
flat_hash_set<PoisonInline> set, set2;
set.insert(a);
set2 = std::move(set);
EXPECT_THAT(set2, UnorderedElementsAre(a));
}
{ // test alloc move constructor from inline to inline
flat_hash_set<PoisonInline> set;
set.insert(a);
flat_hash_set<PoisonInline> set2(std::move(set),
std::allocator<PoisonInline>());
EXPECT_THAT(set2, UnorderedElementsAre(a));
}
}
} // namespace
} // namespace container_internal
ABSL_NAMESPACE_END
} // namespace absl
|
