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Diffstat (limited to 'third_party/abseil_cpp/absl/memory/memory_test.cc')
| -rw-r--r-- | third_party/abseil_cpp/absl/memory/memory_test.cc | 652 |
1 files changed, 0 insertions, 652 deletions
diff --git a/third_party/abseil_cpp/absl/memory/memory_test.cc b/third_party/abseil_cpp/absl/memory/memory_test.cc deleted file mode 100644 index c47820e54a..0000000000 --- a/third_party/abseil_cpp/absl/memory/memory_test.cc +++ /dev/null @@ -1,652 +0,0 @@ -// Copyright 2017 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. - -// Tests for pointer utilities. - -#include "absl/memory/memory.h" - -#include <sys/types.h> -#include <cstddef> -#include <memory> -#include <string> -#include <type_traits> -#include <utility> -#include <vector> - -#include "gmock/gmock.h" -#include "gtest/gtest.h" - -namespace { - -using ::testing::ElementsAre; -using ::testing::Return; - -// This class creates observable behavior to verify that a destructor has -// been called, via the instance_count variable. -class DestructorVerifier { - public: - DestructorVerifier() { ++instance_count_; } - DestructorVerifier(const DestructorVerifier&) = delete; - DestructorVerifier& operator=(const DestructorVerifier&) = delete; - ~DestructorVerifier() { --instance_count_; } - - // The number of instances of this class currently active. - static int instance_count() { return instance_count_; } - - private: - // The number of instances of this class currently active. - static int instance_count_; -}; - -int DestructorVerifier::instance_count_ = 0; - -TEST(WrapUniqueTest, WrapUnique) { - // Test that the unique_ptr is constructed properly by verifying that the - // destructor for its payload gets called at the proper time. - { - auto dv = new DestructorVerifier; - EXPECT_EQ(1, DestructorVerifier::instance_count()); - std::unique_ptr<DestructorVerifier> ptr = absl::WrapUnique(dv); - EXPECT_EQ(1, DestructorVerifier::instance_count()); - } - EXPECT_EQ(0, DestructorVerifier::instance_count()); -} -TEST(MakeUniqueTest, Basic) { - std::unique_ptr<std::string> p = absl::make_unique<std::string>(); - EXPECT_EQ("", *p); - p = absl::make_unique<std::string>("hi"); - EXPECT_EQ("hi", *p); -} - -// InitializationVerifier fills in a pattern when allocated so we can -// distinguish between its default and value initialized states (without -// accessing truly uninitialized memory). -struct InitializationVerifier { - static constexpr int kDefaultScalar = 0x43; - static constexpr int kDefaultArray = 0x4B; - - static void* operator new(size_t n) { - void* ret = ::operator new(n); - memset(ret, kDefaultScalar, n); - return ret; - } - - static void* operator new[](size_t n) { - void* ret = ::operator new[](n); - memset(ret, kDefaultArray, n); - return ret; - } - - int a; - int b; -}; - -TEST(Initialization, MakeUnique) { - auto p = absl::make_unique<InitializationVerifier>(); - - EXPECT_EQ(0, p->a); - EXPECT_EQ(0, p->b); -} - -TEST(Initialization, MakeUniqueArray) { - auto p = absl::make_unique<InitializationVerifier[]>(2); - - EXPECT_EQ(0, p[0].a); - EXPECT_EQ(0, p[0].b); - EXPECT_EQ(0, p[1].a); - EXPECT_EQ(0, p[1].b); -} - -struct MoveOnly { - MoveOnly() = default; - explicit MoveOnly(int i1) : ip1{new int{i1}} {} - MoveOnly(int i1, int i2) : ip1{new int{i1}}, ip2{new int{i2}} {} - std::unique_ptr<int> ip1; - std::unique_ptr<int> ip2; -}; - -struct AcceptMoveOnly { - explicit AcceptMoveOnly(MoveOnly m) : m_(std::move(m)) {} - MoveOnly m_; -}; - -TEST(MakeUniqueTest, MoveOnlyTypeAndValue) { - using ExpectedType = std::unique_ptr<MoveOnly>; - { - auto p = absl::make_unique<MoveOnly>(); - static_assert(std::is_same<decltype(p), ExpectedType>::value, - "unexpected return type"); - EXPECT_TRUE(!p->ip1); - EXPECT_TRUE(!p->ip2); - } - { - auto p = absl::make_unique<MoveOnly>(1); - static_assert(std::is_same<decltype(p), ExpectedType>::value, - "unexpected return type"); - EXPECT_TRUE(p->ip1 && *p->ip1 == 1); - EXPECT_TRUE(!p->ip2); - } - { - auto p = absl::make_unique<MoveOnly>(1, 2); - static_assert(std::is_same<decltype(p), ExpectedType>::value, - "unexpected return type"); - EXPECT_TRUE(p->ip1 && *p->ip1 == 1); - EXPECT_TRUE(p->ip2 && *p->ip2 == 2); - } -} - -TEST(MakeUniqueTest, AcceptMoveOnly) { - auto p = absl::make_unique<AcceptMoveOnly>(MoveOnly()); - p = std::unique_ptr<AcceptMoveOnly>(new AcceptMoveOnly(MoveOnly())); -} - -struct ArrayWatch { - void* operator new[](size_t n) { - allocs().push_back(n); - return ::operator new[](n); - } - void operator delete[](void* p) { - return ::operator delete[](p); - } - static std::vector<size_t>& allocs() { - static auto& v = *new std::vector<size_t>; - return v; - } -}; - -TEST(Make_UniqueTest, Array) { - // Ensure state is clean before we start so that these tests - // are order-agnostic. - ArrayWatch::allocs().clear(); - - auto p = absl::make_unique<ArrayWatch[]>(5); - static_assert(std::is_same<decltype(p), - std::unique_ptr<ArrayWatch[]>>::value, - "unexpected return type"); - EXPECT_THAT(ArrayWatch::allocs(), ElementsAre(5 * sizeof(ArrayWatch))); -} - -TEST(Make_UniqueTest, NotAmbiguousWithStdMakeUnique) { - // Ensure that absl::make_unique is not ambiguous with std::make_unique. - // In C++14 mode, the below call to make_unique has both types as candidates. - struct TakesStdType { - explicit TakesStdType(const std::vector<int> &vec) {} - }; - using absl::make_unique; - (void)make_unique<TakesStdType>(std::vector<int>()); -} - -#if 0 -// These tests shouldn't compile. -TEST(MakeUniqueTestNC, AcceptMoveOnlyLvalue) { - auto m = MoveOnly(); - auto p = absl::make_unique<AcceptMoveOnly>(m); -} -TEST(MakeUniqueTestNC, KnownBoundArray) { - auto p = absl::make_unique<ArrayWatch[5]>(); -} -#endif - -TEST(RawPtrTest, RawPointer) { - int i = 5; - EXPECT_EQ(&i, absl::RawPtr(&i)); -} - -TEST(RawPtrTest, SmartPointer) { - int* o = new int(5); - std::unique_ptr<int> p(o); - EXPECT_EQ(o, absl::RawPtr(p)); -} - -class IntPointerNonConstDeref { - public: - explicit IntPointerNonConstDeref(int* p) : p_(p) {} - friend bool operator!=(const IntPointerNonConstDeref& a, std::nullptr_t) { - return a.p_ != nullptr; - } - int& operator*() { return *p_; } - - private: - std::unique_ptr<int> p_; -}; - -TEST(RawPtrTest, SmartPointerNonConstDereference) { - int* o = new int(5); - IntPointerNonConstDeref p(o); - EXPECT_EQ(o, absl::RawPtr(p)); -} - -TEST(RawPtrTest, NullValuedRawPointer) { - int* p = nullptr; - EXPECT_EQ(nullptr, absl::RawPtr(p)); -} - -TEST(RawPtrTest, NullValuedSmartPointer) { - std::unique_ptr<int> p; - EXPECT_EQ(nullptr, absl::RawPtr(p)); -} - -TEST(RawPtrTest, Nullptr) { - auto p = absl::RawPtr(nullptr); - EXPECT_TRUE((std::is_same<std::nullptr_t, decltype(p)>::value)); - EXPECT_EQ(nullptr, p); -} - -TEST(RawPtrTest, Null) { - auto p = absl::RawPtr(nullptr); - EXPECT_TRUE((std::is_same<std::nullptr_t, decltype(p)>::value)); - EXPECT_EQ(nullptr, p); -} - -TEST(RawPtrTest, Zero) { - auto p = absl::RawPtr(nullptr); - EXPECT_TRUE((std::is_same<std::nullptr_t, decltype(p)>::value)); - EXPECT_EQ(nullptr, p); -} - -TEST(ShareUniquePtrTest, Share) { - auto up = absl::make_unique<int>(); - int* rp = up.get(); - auto sp = absl::ShareUniquePtr(std::move(up)); - EXPECT_EQ(sp.get(), rp); -} - -TEST(ShareUniquePtrTest, ShareNull) { - struct NeverDie { - using pointer = void*; - void operator()(pointer) { - ASSERT_TRUE(false) << "Deleter should not have been called."; - } - }; - - std::unique_ptr<void, NeverDie> up; - auto sp = absl::ShareUniquePtr(std::move(up)); -} - -TEST(WeakenPtrTest, Weak) { - auto sp = std::make_shared<int>(); - auto wp = absl::WeakenPtr(sp); - EXPECT_EQ(sp.get(), wp.lock().get()); - sp.reset(); - EXPECT_TRUE(wp.expired()); -} - -// Should not compile. -/* -TEST(RawPtrTest, NotAPointer) { - absl::RawPtr(1.5); -} -*/ - -template <typename T> -struct SmartPointer { - using difference_type = char; -}; - -struct PointerWith { - using element_type = int32_t; - using difference_type = int16_t; - template <typename U> - using rebind = SmartPointer<U>; - - static PointerWith pointer_to( - element_type& r) { // NOLINT(runtime/references) - return PointerWith{&r}; - } - - element_type* ptr; -}; - -template <typename... Args> -struct PointerWithout {}; - -TEST(PointerTraits, Types) { - using TraitsWith = absl::pointer_traits<PointerWith>; - EXPECT_TRUE((std::is_same<TraitsWith::pointer, PointerWith>::value)); - EXPECT_TRUE((std::is_same<TraitsWith::element_type, int32_t>::value)); - EXPECT_TRUE((std::is_same<TraitsWith::difference_type, int16_t>::value)); - EXPECT_TRUE(( - std::is_same<TraitsWith::rebind<int64_t>, SmartPointer<int64_t>>::value)); - - using TraitsWithout = absl::pointer_traits<PointerWithout<double, int>>; - EXPECT_TRUE((std::is_same<TraitsWithout::pointer, - PointerWithout<double, int>>::value)); - EXPECT_TRUE((std::is_same<TraitsWithout::element_type, double>::value)); - EXPECT_TRUE( - (std::is_same<TraitsWithout ::difference_type, std::ptrdiff_t>::value)); - EXPECT_TRUE((std::is_same<TraitsWithout::rebind<int64_t>, - PointerWithout<int64_t, int>>::value)); - - using TraitsRawPtr = absl::pointer_traits<char*>; - EXPECT_TRUE((std::is_same<TraitsRawPtr::pointer, char*>::value)); - EXPECT_TRUE((std::is_same<TraitsRawPtr::element_type, char>::value)); - EXPECT_TRUE( - (std::is_same<TraitsRawPtr::difference_type, std::ptrdiff_t>::value)); - EXPECT_TRUE((std::is_same<TraitsRawPtr::rebind<int64_t>, int64_t*>::value)); -} - -TEST(PointerTraits, Functions) { - int i; - EXPECT_EQ(&i, absl::pointer_traits<PointerWith>::pointer_to(i).ptr); - EXPECT_EQ(&i, absl::pointer_traits<int*>::pointer_to(i)); -} - -TEST(AllocatorTraits, Typedefs) { - struct A { - struct value_type {}; - }; - EXPECT_TRUE(( - std::is_same<A, - typename absl::allocator_traits<A>::allocator_type>::value)); - EXPECT_TRUE( - (std::is_same<A::value_type, - typename absl::allocator_traits<A>::value_type>::value)); - - struct X {}; - struct HasPointer { - using value_type = X; - using pointer = SmartPointer<X>; - }; - EXPECT_TRUE((std::is_same<SmartPointer<X>, typename absl::allocator_traits< - HasPointer>::pointer>::value)); - EXPECT_TRUE( - (std::is_same<A::value_type*, - typename absl::allocator_traits<A>::pointer>::value)); - - EXPECT_TRUE( - (std::is_same< - SmartPointer<const X>, - typename absl::allocator_traits<HasPointer>::const_pointer>::value)); - EXPECT_TRUE( - (std::is_same<const A::value_type*, - typename absl::allocator_traits<A>::const_pointer>::value)); - - struct HasVoidPointer { - using value_type = X; - struct void_pointer {}; - }; - - EXPECT_TRUE((std::is_same<HasVoidPointer::void_pointer, - typename absl::allocator_traits< - HasVoidPointer>::void_pointer>::value)); - EXPECT_TRUE( - (std::is_same<SmartPointer<void>, typename absl::allocator_traits< - HasPointer>::void_pointer>::value)); - - struct HasConstVoidPointer { - using value_type = X; - struct const_void_pointer {}; - }; - - EXPECT_TRUE( - (std::is_same<HasConstVoidPointer::const_void_pointer, - typename absl::allocator_traits< - HasConstVoidPointer>::const_void_pointer>::value)); - EXPECT_TRUE((std::is_same<SmartPointer<const void>, - typename absl::allocator_traits< - HasPointer>::const_void_pointer>::value)); - - struct HasDifferenceType { - using value_type = X; - using difference_type = int; - }; - EXPECT_TRUE( - (std::is_same<int, typename absl::allocator_traits< - HasDifferenceType>::difference_type>::value)); - EXPECT_TRUE((std::is_same<char, typename absl::allocator_traits< - HasPointer>::difference_type>::value)); - - struct HasSizeType { - using value_type = X; - using size_type = unsigned int; - }; - EXPECT_TRUE((std::is_same<unsigned int, typename absl::allocator_traits< - HasSizeType>::size_type>::value)); - EXPECT_TRUE((std::is_same<unsigned char, typename absl::allocator_traits< - HasPointer>::size_type>::value)); - - struct HasPropagateOnCopy { - using value_type = X; - struct propagate_on_container_copy_assignment {}; - }; - - EXPECT_TRUE( - (std::is_same<HasPropagateOnCopy::propagate_on_container_copy_assignment, - typename absl::allocator_traits<HasPropagateOnCopy>:: - propagate_on_container_copy_assignment>::value)); - EXPECT_TRUE( - (std::is_same<std::false_type, - typename absl::allocator_traits< - A>::propagate_on_container_copy_assignment>::value)); - - struct HasPropagateOnMove { - using value_type = X; - struct propagate_on_container_move_assignment {}; - }; - - EXPECT_TRUE( - (std::is_same<HasPropagateOnMove::propagate_on_container_move_assignment, - typename absl::allocator_traits<HasPropagateOnMove>:: - propagate_on_container_move_assignment>::value)); - EXPECT_TRUE( - (std::is_same<std::false_type, - typename absl::allocator_traits< - A>::propagate_on_container_move_assignment>::value)); - - struct HasPropagateOnSwap { - using value_type = X; - struct propagate_on_container_swap {}; - }; - - EXPECT_TRUE( - (std::is_same<HasPropagateOnSwap::propagate_on_container_swap, - typename absl::allocator_traits<HasPropagateOnSwap>:: - propagate_on_container_swap>::value)); - EXPECT_TRUE( - (std::is_same<std::false_type, typename absl::allocator_traits<A>:: - propagate_on_container_swap>::value)); - - struct HasIsAlwaysEqual { - using value_type = X; - struct is_always_equal {}; - }; - - EXPECT_TRUE((std::is_same<HasIsAlwaysEqual::is_always_equal, - typename absl::allocator_traits< - HasIsAlwaysEqual>::is_always_equal>::value)); - EXPECT_TRUE((std::is_same<std::true_type, typename absl::allocator_traits< - A>::is_always_equal>::value)); - struct NonEmpty { - using value_type = X; - int i; - }; - EXPECT_TRUE( - (std::is_same<std::false_type, - absl::allocator_traits<NonEmpty>::is_always_equal>::value)); -} - -template <typename T> -struct AllocWithPrivateInheritance : private std::allocator<T> { - using value_type = T; -}; - -TEST(AllocatorTraits, RebindWithPrivateInheritance) { - // Regression test for some versions of gcc that do not like the sfinae we - // used in combination with private inheritance. - EXPECT_TRUE( - (std::is_same<AllocWithPrivateInheritance<int>, - absl::allocator_traits<AllocWithPrivateInheritance<char>>:: - rebind_alloc<int>>::value)); -} - -template <typename T> -struct Rebound {}; - -struct AllocWithRebind { - using value_type = int; - template <typename T> - struct rebind { - using other = Rebound<T>; - }; -}; - -template <typename T, typename U> -struct AllocWithoutRebind { - using value_type = int; -}; - -TEST(AllocatorTraits, Rebind) { - EXPECT_TRUE( - (std::is_same<Rebound<int>, - typename absl::allocator_traits< - AllocWithRebind>::template rebind_alloc<int>>::value)); - EXPECT_TRUE( - (std::is_same<absl::allocator_traits<Rebound<int>>, - typename absl::allocator_traits< - AllocWithRebind>::template rebind_traits<int>>::value)); - - EXPECT_TRUE( - (std::is_same<AllocWithoutRebind<double, char>, - typename absl::allocator_traits<AllocWithoutRebind< - int, char>>::template rebind_alloc<double>>::value)); - EXPECT_TRUE( - (std::is_same<absl::allocator_traits<AllocWithoutRebind<double, char>>, - typename absl::allocator_traits<AllocWithoutRebind< - int, char>>::template rebind_traits<double>>::value)); -} - -struct TestValue { - TestValue() {} - explicit TestValue(int* trace) : trace(trace) { ++*trace; } - ~TestValue() { - if (trace) --*trace; - } - int* trace = nullptr; -}; - -struct MinimalMockAllocator { - MinimalMockAllocator() : value(0) {} - explicit MinimalMockAllocator(int value) : value(value) {} - MinimalMockAllocator(const MinimalMockAllocator& other) - : value(other.value) {} - using value_type = TestValue; - MOCK_METHOD1(allocate, value_type*(size_t)); - MOCK_METHOD2(deallocate, void(value_type*, size_t)); - - int value; -}; - -TEST(AllocatorTraits, FunctionsMinimal) { - int trace = 0; - int hint; - TestValue x(&trace); - MinimalMockAllocator mock; - using Traits = absl::allocator_traits<MinimalMockAllocator>; - EXPECT_CALL(mock, allocate(7)).WillRepeatedly(Return(&x)); - EXPECT_CALL(mock, deallocate(&x, 7)); - - EXPECT_EQ(&x, Traits::allocate(mock, 7)); - Traits::allocate(mock, 7, static_cast<const void*>(&hint)); - EXPECT_EQ(&x, Traits::allocate(mock, 7, static_cast<const void*>(&hint))); - Traits::deallocate(mock, &x, 7); - - EXPECT_EQ(1, trace); - Traits::construct(mock, &x, &trace); - EXPECT_EQ(2, trace); - Traits::destroy(mock, &x); - EXPECT_EQ(1, trace); - - EXPECT_EQ(std::numeric_limits<size_t>::max() / sizeof(TestValue), - Traits::max_size(mock)); - - EXPECT_EQ(0, mock.value); - EXPECT_EQ(0, Traits::select_on_container_copy_construction(mock).value); -} - -struct FullMockAllocator { - FullMockAllocator() : value(0) {} - explicit FullMockAllocator(int value) : value(value) {} - FullMockAllocator(const FullMockAllocator& other) : value(other.value) {} - using value_type = TestValue; - MOCK_METHOD1(allocate, value_type*(size_t)); - MOCK_METHOD2(allocate, value_type*(size_t, const void*)); - MOCK_METHOD2(construct, void(value_type*, int*)); - MOCK_METHOD1(destroy, void(value_type*)); - MOCK_CONST_METHOD0(max_size, size_t()); - MOCK_CONST_METHOD0(select_on_container_copy_construction, - FullMockAllocator()); - - int value; -}; - -TEST(AllocatorTraits, FunctionsFull) { - int trace = 0; - int hint; - TestValue x(&trace), y; - FullMockAllocator mock; - using Traits = absl::allocator_traits<FullMockAllocator>; - EXPECT_CALL(mock, allocate(7)).WillRepeatedly(Return(&x)); - EXPECT_CALL(mock, allocate(13, &hint)).WillRepeatedly(Return(&y)); - EXPECT_CALL(mock, construct(&x, &trace)); - EXPECT_CALL(mock, destroy(&x)); - EXPECT_CALL(mock, max_size()).WillRepeatedly(Return(17)); - EXPECT_CALL(mock, select_on_container_copy_construction()) - .WillRepeatedly(Return(FullMockAllocator(23))); - - EXPECT_EQ(&x, Traits::allocate(mock, 7)); - EXPECT_EQ(&y, Traits::allocate(mock, 13, static_cast<const void*>(&hint))); - - EXPECT_EQ(1, trace); - Traits::construct(mock, &x, &trace); - EXPECT_EQ(1, trace); - Traits::destroy(mock, &x); - EXPECT_EQ(1, trace); - - EXPECT_EQ(17, Traits::max_size(mock)); - - EXPECT_EQ(0, mock.value); - EXPECT_EQ(23, Traits::select_on_container_copy_construction(mock).value); -} - -TEST(AllocatorNoThrowTest, DefaultAllocator) { -#if defined(ABSL_ALLOCATOR_NOTHROW) && ABSL_ALLOCATOR_NOTHROW - EXPECT_TRUE(absl::default_allocator_is_nothrow::value); -#else - EXPECT_FALSE(absl::default_allocator_is_nothrow::value); -#endif -} - -TEST(AllocatorNoThrowTest, StdAllocator) { -#if defined(ABSL_ALLOCATOR_NOTHROW) && ABSL_ALLOCATOR_NOTHROW - EXPECT_TRUE(absl::allocator_is_nothrow<std::allocator<int>>::value); -#else - EXPECT_FALSE(absl::allocator_is_nothrow<std::allocator<int>>::value); -#endif -} - -TEST(AllocatorNoThrowTest, CustomAllocator) { - struct NoThrowAllocator { - using is_nothrow = std::true_type; - }; - struct CanThrowAllocator { - using is_nothrow = std::false_type; - }; - struct UnspecifiedAllocator { - }; - EXPECT_TRUE(absl::allocator_is_nothrow<NoThrowAllocator>::value); - EXPECT_FALSE(absl::allocator_is_nothrow<CanThrowAllocator>::value); - EXPECT_FALSE(absl::allocator_is_nothrow<UnspecifiedAllocator>::value); -} - -} // namespace |