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snix/absl/container/internal/unordered_map_constructor_test.h
Abseil Team 12bc53e031 Export of internal Abseil changes 
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c99f979ad34f155fbeeea69b88bdc7458d89a21c by Derek Mauro <dmauro@google.com>:

Remove a floating point division by zero test.

This isn't testing behavior related to the library, and MSVC warns
about it in opt mode.

PiperOrigin-RevId: 285220804

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68b015491f0dbf1ab547994673281abd1f34cd4b by Gennadiy Rozental <rogeeff@google.com>:

This CL introduces following changes to the class FlagImpl:
* We eliminate the CommandLineFlagLocks struct. Instead callback guard and callback function are combined into a single CallbackData struct, while primary data lock is stored separately.
* CallbackData member of class FlagImpl is initially set to be nullptr and is only allocated and initialized when a flag's callback is being set. For most flags we do not pay for the extra space and extra absl::Mutex now.
* Primary data guard is stored in data_guard_ data member. This is a properly aligned character buffer of necessary size. During initialization of the flag we construct absl::Mutex in this space using placement new call.
* We now avoid extra value copy after successful attempt to parse value out of string. Instead we swap flag's current value with tentative value we just produced.

PiperOrigin-RevId: 285132636

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ed45d118fb818969eb13094cf7827c885dfc562c by Tom Manshreck <shreck@google.com>:

Change null-term* (and nul-term*) to NUL-term* in comments

PiperOrigin-RevId: 285036610

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729619017944db895ce8d6d29c1995aa2e5628a5 by Derek Mauro <dmauro@google.com>:

Use the Posix implementation of thread identity on MinGW.
Some versions of MinGW suffer from thread_local bugs.

PiperOrigin-RevId: 285022920

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39a25493503c76885bc3254c28f66a251c5b5bb0 by Greg Falcon <gfalcon@google.com>:

Implementation detail change.

Add further ABSL_NAMESPACE_BEGIN and _END annotation macros to files in Abseil.

PiperOrigin-RevId: 285012012
GitOrigin-RevId: c99f979ad34f155fbeeea69b88bdc7458d89a21c
Change-Id: I4c85d3704e45d11a9ac50d562f39640a6adbedc1
2019-12-12 15:37:13 -05:00

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// 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.
#ifndef ABSL_CONTAINER_INTERNAL_UNORDERED_MAP_CONSTRUCTOR_TEST_H_
#define ABSL_CONTAINER_INTERNAL_UNORDERED_MAP_CONSTRUCTOR_TEST_H_
#include <algorithm>
#include <vector>
#include "gmock/gmock.h"
#include "gtest/gtest.h"
#include "absl/container/internal/hash_generator_testing.h"
#include "absl/container/internal/hash_policy_testing.h"
namespace absl {
ABSL_NAMESPACE_BEGIN
namespace container_internal {
template <class UnordMap>
class ConstructorTest : public ::testing::Test {};
TYPED_TEST_SUITE_P(ConstructorTest);
TYPED_TEST_P(ConstructorTest, NoArgs) {
TypeParam m;
EXPECT_TRUE(m.empty());
EXPECT_THAT(m, ::testing::UnorderedElementsAre());
}
TYPED_TEST_P(ConstructorTest, BucketCount) {
TypeParam m(123);
EXPECT_TRUE(m.empty());
EXPECT_THAT(m, ::testing::UnorderedElementsAre());
EXPECT_GE(m.bucket_count(), 123);
}
TYPED_TEST_P(ConstructorTest, BucketCountHash) {
using H = typename TypeParam::hasher;
H hasher;
TypeParam m(123, hasher);
EXPECT_EQ(m.hash_function(), hasher);
EXPECT_TRUE(m.empty());
EXPECT_THAT(m, ::testing::UnorderedElementsAre());
EXPECT_GE(m.bucket_count(), 123);
}
TYPED_TEST_P(ConstructorTest, BucketCountHashEqual) {
using H = typename TypeParam::hasher;
using E = typename TypeParam::key_equal;
H hasher;
E equal;
TypeParam m(123, hasher, equal);
EXPECT_EQ(m.hash_function(), hasher);
EXPECT_EQ(m.key_eq(), equal);
EXPECT_TRUE(m.empty());
EXPECT_THAT(m, ::testing::UnorderedElementsAre());
EXPECT_GE(m.bucket_count(), 123);
}
TYPED_TEST_P(ConstructorTest, BucketCountHashEqualAlloc) {
using H = typename TypeParam::hasher;
using E = typename TypeParam::key_equal;
using A = typename TypeParam::allocator_type;
H hasher;
E equal;
A alloc(0);
TypeParam m(123, hasher, equal, alloc);
EXPECT_EQ(m.hash_function(), hasher);
EXPECT_EQ(m.key_eq(), equal);
EXPECT_EQ(m.get_allocator(), alloc);
EXPECT_TRUE(m.empty());
EXPECT_THAT(m, ::testing::UnorderedElementsAre());
EXPECT_GE(m.bucket_count(), 123);
}
template <typename T>
struct is_std_unordered_map : std::false_type {};
template <typename... T>
struct is_std_unordered_map<std::unordered_map<T...>> : std::true_type {};
#if defined(UNORDERED_MAP_CXX14) || defined(UNORDERED_MAP_CXX17)
using has_cxx14_std_apis = std::true_type;
#else
using has_cxx14_std_apis = std::false_type;
#endif
template <typename T>
using expect_cxx14_apis =
absl::disjunction<absl::negation<is_std_unordered_map<T>>,
has_cxx14_std_apis>;
template <typename TypeParam>
void BucketCountAllocTest(std::false_type) {}
template <typename TypeParam>
void BucketCountAllocTest(std::true_type) {
using A = typename TypeParam::allocator_type;
A alloc(0);
TypeParam m(123, alloc);
EXPECT_EQ(m.get_allocator(), alloc);
EXPECT_TRUE(m.empty());
EXPECT_THAT(m, ::testing::UnorderedElementsAre());
EXPECT_GE(m.bucket_count(), 123);
}
TYPED_TEST_P(ConstructorTest, BucketCountAlloc) {
BucketCountAllocTest<TypeParam>(expect_cxx14_apis<TypeParam>());
}
template <typename TypeParam>
void BucketCountHashAllocTest(std::false_type) {}
template <typename TypeParam>
void BucketCountHashAllocTest(std::true_type) {
using H = typename TypeParam::hasher;
using A = typename TypeParam::allocator_type;
H hasher;
A alloc(0);
TypeParam m(123, hasher, alloc);
EXPECT_EQ(m.hash_function(), hasher);
EXPECT_EQ(m.get_allocator(), alloc);
EXPECT_TRUE(m.empty());
EXPECT_THAT(m, ::testing::UnorderedElementsAre());
EXPECT_GE(m.bucket_count(), 123);
}
TYPED_TEST_P(ConstructorTest, BucketCountHashAlloc) {
BucketCountHashAllocTest<TypeParam>(expect_cxx14_apis<TypeParam>());
}
#if ABSL_UNORDERED_SUPPORTS_ALLOC_CTORS
using has_alloc_std_constructors = std::true_type;
#else
using has_alloc_std_constructors = std::false_type;
#endif
template <typename T>
using expect_alloc_constructors =
absl::disjunction<absl::negation<is_std_unordered_map<T>>,
has_alloc_std_constructors>;
template <typename TypeParam>
void AllocTest(std::false_type) {}
template <typename TypeParam>
void AllocTest(std::true_type) {
using A = typename TypeParam::allocator_type;
A alloc(0);
TypeParam m(alloc);
EXPECT_EQ(m.get_allocator(), alloc);
EXPECT_TRUE(m.empty());
EXPECT_THAT(m, ::testing::UnorderedElementsAre());
}
TYPED_TEST_P(ConstructorTest, Alloc) {
AllocTest<TypeParam>(expect_alloc_constructors<TypeParam>());
}
TYPED_TEST_P(ConstructorTest, InputIteratorBucketHashEqualAlloc) {
using T = hash_internal::GeneratedType<TypeParam>;
using H = typename TypeParam::hasher;
using E = typename TypeParam::key_equal;
using A = typename TypeParam::allocator_type;
H hasher;
E equal;
A alloc(0);
std::vector<T> values;
std::generate_n(std::back_inserter(values), 10,
hash_internal::Generator<T>());
TypeParam m(values.begin(), values.end(), 123, hasher, equal, alloc);
EXPECT_EQ(m.hash_function(), hasher);
EXPECT_EQ(m.key_eq(), equal);
EXPECT_EQ(m.get_allocator(), alloc);
EXPECT_THAT(items(m), ::testing::UnorderedElementsAreArray(values));
EXPECT_GE(m.bucket_count(), 123);
}
template <typename TypeParam>
void InputIteratorBucketAllocTest(std::false_type) {}
template <typename TypeParam>
void InputIteratorBucketAllocTest(std::true_type) {
using T = hash_internal::GeneratedType<TypeParam>;
using A = typename TypeParam::allocator_type;
A alloc(0);
std::vector<T> values;
std::generate_n(std::back_inserter(values), 10,
hash_internal::Generator<T>());
TypeParam m(values.begin(), values.end(), 123, alloc);
EXPECT_EQ(m.get_allocator(), alloc);
EXPECT_THAT(items(m), ::testing::UnorderedElementsAreArray(values));
EXPECT_GE(m.bucket_count(), 123);
}
TYPED_TEST_P(ConstructorTest, InputIteratorBucketAlloc) {
InputIteratorBucketAllocTest<TypeParam>(expect_cxx14_apis<TypeParam>());
}
template <typename TypeParam>
void InputIteratorBucketHashAllocTest(std::false_type) {}
template <typename TypeParam>
void InputIteratorBucketHashAllocTest(std::true_type) {
using T = hash_internal::GeneratedType<TypeParam>;
using H = typename TypeParam::hasher;
using A = typename TypeParam::allocator_type;
H hasher;
A alloc(0);
std::vector<T> values;
std::generate_n(std::back_inserter(values), 10,
hash_internal::Generator<T>());
TypeParam m(values.begin(), values.end(), 123, hasher, alloc);
EXPECT_EQ(m.hash_function(), hasher);
EXPECT_EQ(m.get_allocator(), alloc);
EXPECT_THAT(items(m), ::testing::UnorderedElementsAreArray(values));
EXPECT_GE(m.bucket_count(), 123);
}
TYPED_TEST_P(ConstructorTest, InputIteratorBucketHashAlloc) {
InputIteratorBucketHashAllocTest<TypeParam>(expect_cxx14_apis<TypeParam>());
}
TYPED_TEST_P(ConstructorTest, CopyConstructor) {
using T = hash_internal::GeneratedType<TypeParam>;
using H = typename TypeParam::hasher;
using E = typename TypeParam::key_equal;
using A = typename TypeParam::allocator_type;
H hasher;
E equal;
A alloc(0);
TypeParam m(123, hasher, equal, alloc);
for (size_t i = 0; i != 10; ++i) m.insert(hash_internal::Generator<T>()());
TypeParam n(m);
EXPECT_EQ(m.hash_function(), n.hash_function());
EXPECT_EQ(m.key_eq(), n.key_eq());
EXPECT_EQ(m.get_allocator(), n.get_allocator());
EXPECT_EQ(m, n);
}
template <typename TypeParam>
void CopyConstructorAllocTest(std::false_type) {}
template <typename TypeParam>
void CopyConstructorAllocTest(std::true_type) {
using T = hash_internal::GeneratedType<TypeParam>;
using H = typename TypeParam::hasher;
using E = typename TypeParam::key_equal;
using A = typename TypeParam::allocator_type;
H hasher;
E equal;
A alloc(0);
TypeParam m(123, hasher, equal, alloc);
for (size_t i = 0; i != 10; ++i) m.insert(hash_internal::Generator<T>()());
TypeParam n(m, A(11));
EXPECT_EQ(m.hash_function(), n.hash_function());
EXPECT_EQ(m.key_eq(), n.key_eq());
EXPECT_NE(m.get_allocator(), n.get_allocator());
EXPECT_EQ(m, n);
}
TYPED_TEST_P(ConstructorTest, CopyConstructorAlloc) {
CopyConstructorAllocTest<TypeParam>(expect_alloc_constructors<TypeParam>());
}
// TODO(alkis): Test non-propagating allocators on copy constructors.
TYPED_TEST_P(ConstructorTest, MoveConstructor) {
using T = hash_internal::GeneratedType<TypeParam>;
using H = typename TypeParam::hasher;
using E = typename TypeParam::key_equal;
using A = typename TypeParam::allocator_type;
H hasher;
E equal;
A alloc(0);
TypeParam m(123, hasher, equal, alloc);
for (size_t i = 0; i != 10; ++i) m.insert(hash_internal::Generator<T>()());
TypeParam t(m);
TypeParam n(std::move(t));
EXPECT_EQ(m.hash_function(), n.hash_function());
EXPECT_EQ(m.key_eq(), n.key_eq());
EXPECT_EQ(m.get_allocator(), n.get_allocator());
EXPECT_EQ(m, n);
}
template <typename TypeParam>
void MoveConstructorAllocTest(std::false_type) {}
template <typename TypeParam>
void MoveConstructorAllocTest(std::true_type) {
using T = hash_internal::GeneratedType<TypeParam>;
using H = typename TypeParam::hasher;
using E = typename TypeParam::key_equal;
using A = typename TypeParam::allocator_type;
H hasher;
E equal;
A alloc(0);
TypeParam m(123, hasher, equal, alloc);
for (size_t i = 0; i != 10; ++i) m.insert(hash_internal::Generator<T>()());
TypeParam t(m);
TypeParam n(std::move(t), A(1));
EXPECT_EQ(m.hash_function(), n.hash_function());
EXPECT_EQ(m.key_eq(), n.key_eq());
EXPECT_NE(m.get_allocator(), n.get_allocator());
EXPECT_EQ(m, n);
}
TYPED_TEST_P(ConstructorTest, MoveConstructorAlloc) {
MoveConstructorAllocTest<TypeParam>(expect_alloc_constructors<TypeParam>());
}
// TODO(alkis): Test non-propagating allocators on move constructors.
TYPED_TEST_P(ConstructorTest, InitializerListBucketHashEqualAlloc) {
using T = hash_internal::GeneratedType<TypeParam>;
hash_internal::Generator<T> gen;
std::initializer_list<T> values = {gen(), gen(), gen(), gen(), gen()};
using H = typename TypeParam::hasher;
using E = typename TypeParam::key_equal;
using A = typename TypeParam::allocator_type;
H hasher;
E equal;
A alloc(0);
TypeParam m(values, 123, hasher, equal, alloc);
EXPECT_EQ(m.hash_function(), hasher);
EXPECT_EQ(m.key_eq(), equal);
EXPECT_EQ(m.get_allocator(), alloc);
EXPECT_THAT(items(m), ::testing::UnorderedElementsAreArray(values));
EXPECT_GE(m.bucket_count(), 123);
}
template <typename TypeParam>
void InitializerListBucketAllocTest(std::false_type) {}
template <typename TypeParam>
void InitializerListBucketAllocTest(std::true_type) {
using T = hash_internal::GeneratedType<TypeParam>;
using A = typename TypeParam::allocator_type;
hash_internal::Generator<T> gen;
std::initializer_list<T> values = {gen(), gen(), gen(), gen(), gen()};
A alloc(0);
TypeParam m(values, 123, alloc);
EXPECT_EQ(m.get_allocator(), alloc);
EXPECT_THAT(items(m), ::testing::UnorderedElementsAreArray(values));
EXPECT_GE(m.bucket_count(), 123);
}
TYPED_TEST_P(ConstructorTest, InitializerListBucketAlloc) {
InitializerListBucketAllocTest<TypeParam>(expect_cxx14_apis<TypeParam>());
}
template <typename TypeParam>
void InitializerListBucketHashAllocTest(std::false_type) {}
template <typename TypeParam>
void InitializerListBucketHashAllocTest(std::true_type) {
using T = hash_internal::GeneratedType<TypeParam>;
using H = typename TypeParam::hasher;
using A = typename TypeParam::allocator_type;
H hasher;
A alloc(0);
hash_internal::Generator<T> gen;
std::initializer_list<T> values = {gen(), gen(), gen(), gen(), gen()};
TypeParam m(values, 123, hasher, alloc);
EXPECT_EQ(m.hash_function(), hasher);
EXPECT_EQ(m.get_allocator(), alloc);
EXPECT_THAT(items(m), ::testing::UnorderedElementsAreArray(values));
EXPECT_GE(m.bucket_count(), 123);
}
TYPED_TEST_P(ConstructorTest, InitializerListBucketHashAlloc) {
InitializerListBucketHashAllocTest<TypeParam>(expect_cxx14_apis<TypeParam>());
}
TYPED_TEST_P(ConstructorTest, Assignment) {
using T = hash_internal::GeneratedType<TypeParam>;
using H = typename TypeParam::hasher;
using E = typename TypeParam::key_equal;
using A = typename TypeParam::allocator_type;
H hasher;
E equal;
A alloc(0);
hash_internal::Generator<T> gen;
TypeParam m({gen(), gen(), gen()}, 123, hasher, equal, alloc);
TypeParam n;
n = m;
EXPECT_EQ(m.hash_function(), n.hash_function());
EXPECT_EQ(m.key_eq(), n.key_eq());
EXPECT_EQ(m, n);
}
// TODO(alkis): Test [non-]propagating allocators on move/copy assignments
// (it depends on traits).
TYPED_TEST_P(ConstructorTest, MoveAssignment) {
using T = hash_internal::GeneratedType<TypeParam>;
using H = typename TypeParam::hasher;
using E = typename TypeParam::key_equal;
using A = typename TypeParam::allocator_type;
H hasher;
E equal;
A alloc(0);
hash_internal::Generator<T> gen;
TypeParam m({gen(), gen(), gen()}, 123, hasher, equal, alloc);
TypeParam t(m);
TypeParam n;
n = std::move(t);
EXPECT_EQ(m.hash_function(), n.hash_function());
EXPECT_EQ(m.key_eq(), n.key_eq());
EXPECT_EQ(m, n);
}
TYPED_TEST_P(ConstructorTest, AssignmentFromInitializerList) {
using T = hash_internal::GeneratedType<TypeParam>;
hash_internal::Generator<T> gen;
std::initializer_list<T> values = {gen(), gen(), gen(), gen(), gen()};
TypeParam m;
m = values;
EXPECT_THAT(items(m), ::testing::UnorderedElementsAreArray(values));
}
TYPED_TEST_P(ConstructorTest, AssignmentOverwritesExisting) {
using T = hash_internal::GeneratedType<TypeParam>;
hash_internal::Generator<T> gen;
TypeParam m({gen(), gen(), gen()});
TypeParam n({gen()});
n = m;
EXPECT_EQ(m, n);
}
TYPED_TEST_P(ConstructorTest, MoveAssignmentOverwritesExisting) {
using T = hash_internal::GeneratedType<TypeParam>;
hash_internal::Generator<T> gen;
TypeParam m({gen(), gen(), gen()});
TypeParam t(m);
TypeParam n({gen()});
n = std::move(t);
EXPECT_EQ(m, n);
}
TYPED_TEST_P(ConstructorTest, AssignmentFromInitializerListOverwritesExisting) {
using T = hash_internal::GeneratedType<TypeParam>;
hash_internal::Generator<T> gen;
std::initializer_list<T> values = {gen(), gen(), gen(), gen(), gen()};
TypeParam m;
m = values;
EXPECT_THAT(items(m), ::testing::UnorderedElementsAreArray(values));
}
TYPED_TEST_P(ConstructorTest, AssignmentOnSelf) {
using T = hash_internal::GeneratedType<TypeParam>;
hash_internal::Generator<T> gen;
std::initializer_list<T> values = {gen(), gen(), gen(), gen(), gen()};
TypeParam m(values);
m = *&m; // Avoid -Wself-assign
EXPECT_THAT(items(m), ::testing::UnorderedElementsAreArray(values));
}
// We cannot test self move as standard states that it leaves standard
// containers in unspecified state (and in practice in causes memory-leak
// according to heap-checker!).
REGISTER_TYPED_TEST_CASE_P(
ConstructorTest, NoArgs, BucketCount, BucketCountHash, BucketCountHashEqual,
BucketCountHashEqualAlloc, BucketCountAlloc, BucketCountHashAlloc, Alloc,
InputIteratorBucketHashEqualAlloc, InputIteratorBucketAlloc,
InputIteratorBucketHashAlloc, CopyConstructor, CopyConstructorAlloc,
MoveConstructor, MoveConstructorAlloc, InitializerListBucketHashEqualAlloc,
InitializerListBucketAlloc, InitializerListBucketHashAlloc, Assignment,
MoveAssignment, AssignmentFromInitializerList, AssignmentOverwritesExisting,
MoveAssignmentOverwritesExisting,
AssignmentFromInitializerListOverwritesExisting, AssignmentOnSelf);
} // namespace container_internal
ABSL_NAMESPACE_END
} // namespace absl
#endif // ABSL_CONTAINER_INTERNAL_UNORDERED_MAP_CONSTRUCTOR_TEST_H_
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