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Diffstat (limited to 'third_party/abseil_cpp/absl/functional/function_ref_test.cc')
| -rw-r--r-- | third_party/abseil_cpp/absl/functional/function_ref_test.cc | 257 |
1 files changed, 0 insertions, 257 deletions
diff --git a/third_party/abseil_cpp/absl/functional/function_ref_test.cc b/third_party/abseil_cpp/absl/functional/function_ref_test.cc deleted file mode 100644 index 3aa59745873d..000000000000 --- a/third_party/abseil_cpp/absl/functional/function_ref_test.cc +++ /dev/null @@ -1,257 +0,0 @@ -// Copyright 2019 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/functional/function_ref.h" - -#include <memory> - -#include "gmock/gmock.h" -#include "gtest/gtest.h" -#include "absl/container/internal/test_instance_tracker.h" -#include "absl/memory/memory.h" - -namespace absl { -ABSL_NAMESPACE_BEGIN -namespace { - -void RunFun(FunctionRef<void()> f) { f(); } - -TEST(FunctionRefTest, Lambda) { - bool ran = false; - RunFun([&] { ran = true; }); - EXPECT_TRUE(ran); -} - -int Function() { return 1337; } - -TEST(FunctionRefTest, Function1) { - FunctionRef<int()> ref(&Function); - EXPECT_EQ(1337, ref()); -} - -TEST(FunctionRefTest, Function2) { - FunctionRef<int()> ref(Function); - EXPECT_EQ(1337, ref()); -} - -int NoExceptFunction() noexcept { return 1337; } - -// TODO(jdennett): Add a test for noexcept member functions. -TEST(FunctionRefTest, NoExceptFunction) { - FunctionRef<int()> ref(NoExceptFunction); - EXPECT_EQ(1337, ref()); -} - -TEST(FunctionRefTest, ForwardsArgs) { - auto l = [](std::unique_ptr<int> i) { return *i; }; - FunctionRef<int(std::unique_ptr<int>)> ref(l); - EXPECT_EQ(42, ref(absl::make_unique<int>(42))); -} - -TEST(FunctionRef, ReturnMoveOnly) { - auto l = [] { return absl::make_unique<int>(29); }; - FunctionRef<std::unique_ptr<int>()> ref(l); - EXPECT_EQ(29, *ref()); -} - -TEST(FunctionRef, ManyArgs) { - auto l = [](int a, int b, int c) { return a + b + c; }; - FunctionRef<int(int, int, int)> ref(l); - EXPECT_EQ(6, ref(1, 2, 3)); -} - -TEST(FunctionRef, VoidResultFromNonVoidFunctor) { - bool ran = false; - auto l = [&]() -> int { - ran = true; - return 2; - }; - FunctionRef<void()> ref(l); - ref(); - EXPECT_TRUE(ran); -} - -TEST(FunctionRef, CastFromDerived) { - struct Base {}; - struct Derived : public Base {}; - - Derived d; - auto l1 = [&](Base* b) { EXPECT_EQ(&d, b); }; - FunctionRef<void(Derived*)> ref1(l1); - ref1(&d); - - auto l2 = [&]() -> Derived* { return &d; }; - FunctionRef<Base*()> ref2(l2); - EXPECT_EQ(&d, ref2()); -} - -TEST(FunctionRef, VoidResultFromNonVoidFuncton) { - FunctionRef<void()> ref(Function); - ref(); -} - -TEST(FunctionRef, MemberPtr) { - struct S { - int i; - }; - - S s{1100111}; - auto mem_ptr = &S::i; - FunctionRef<int(const S& s)> ref(mem_ptr); - EXPECT_EQ(1100111, ref(s)); -} - -TEST(FunctionRef, MemberFun) { - struct S { - int i; - int get_i() const { return i; } - }; - - S s{22}; - auto mem_fun_ptr = &S::get_i; - FunctionRef<int(const S& s)> ref(mem_fun_ptr); - EXPECT_EQ(22, ref(s)); -} - -TEST(FunctionRef, MemberFunRefqualified) { - struct S { - int i; - int get_i() && { return i; } - }; - auto mem_fun_ptr = &S::get_i; - S s{22}; - FunctionRef<int(S && s)> ref(mem_fun_ptr); - EXPECT_EQ(22, ref(std::move(s))); -} - -#if !defined(_WIN32) && defined(GTEST_HAS_DEATH_TEST) - -TEST(FunctionRef, MemberFunRefqualifiedNull) { - struct S { - int i; - int get_i() && { return i; } - }; - auto mem_fun_ptr = &S::get_i; - mem_fun_ptr = nullptr; - EXPECT_DEBUG_DEATH({ FunctionRef<int(S && s)> ref(mem_fun_ptr); }, ""); -} - -TEST(FunctionRef, NullMemberPtrAssertFails) { - struct S { - int i; - }; - using MemberPtr = int S::*; - MemberPtr mem_ptr = nullptr; - EXPECT_DEBUG_DEATH({ FunctionRef<int(const S& s)> ref(mem_ptr); }, ""); -} - -#endif // GTEST_HAS_DEATH_TEST - -TEST(FunctionRef, CopiesAndMovesPerPassByValue) { - absl::test_internal::InstanceTracker tracker; - absl::test_internal::CopyableMovableInstance instance(0); - auto l = [](absl::test_internal::CopyableMovableInstance) {}; - FunctionRef<void(absl::test_internal::CopyableMovableInstance)> ref(l); - ref(instance); - EXPECT_EQ(tracker.copies(), 1); - EXPECT_EQ(tracker.moves(), 1); -} - -TEST(FunctionRef, CopiesAndMovesPerPassByRef) { - absl::test_internal::InstanceTracker tracker; - absl::test_internal::CopyableMovableInstance instance(0); - auto l = [](const absl::test_internal::CopyableMovableInstance&) {}; - FunctionRef<void(const absl::test_internal::CopyableMovableInstance&)> ref(l); - ref(instance); - EXPECT_EQ(tracker.copies(), 0); - EXPECT_EQ(tracker.moves(), 0); -} - -TEST(FunctionRef, CopiesAndMovesPerPassByValueCallByMove) { - absl::test_internal::InstanceTracker tracker; - absl::test_internal::CopyableMovableInstance instance(0); - auto l = [](absl::test_internal::CopyableMovableInstance) {}; - FunctionRef<void(absl::test_internal::CopyableMovableInstance)> ref(l); - ref(std::move(instance)); - EXPECT_EQ(tracker.copies(), 0); - EXPECT_EQ(tracker.moves(), 2); -} - -TEST(FunctionRef, CopiesAndMovesPerPassByValueToRef) { - absl::test_internal::InstanceTracker tracker; - absl::test_internal::CopyableMovableInstance instance(0); - auto l = [](const absl::test_internal::CopyableMovableInstance&) {}; - FunctionRef<void(absl::test_internal::CopyableMovableInstance)> ref(l); - ref(std::move(instance)); - EXPECT_EQ(tracker.copies(), 0); - EXPECT_EQ(tracker.moves(), 1); -} - -TEST(FunctionRef, PassByValueTypes) { - using absl::functional_internal::Invoker; - using absl::functional_internal::VoidPtr; - using absl::test_internal::CopyableMovableInstance; - struct Trivial { - void* p[2]; - }; - struct LargeTrivial { - void* p[3]; - }; - - static_assert(std::is_same<Invoker<void, int>, void (*)(VoidPtr, int)>::value, - "Scalar types should be passed by value"); - static_assert( - std::is_same<Invoker<void, Trivial>, void (*)(VoidPtr, Trivial)>::value, - "Small trivial types should be passed by value"); - static_assert(std::is_same<Invoker<void, LargeTrivial>, - void (*)(VoidPtr, LargeTrivial &&)>::value, - "Large trivial types should be passed by rvalue reference"); - static_assert( - std::is_same<Invoker<void, CopyableMovableInstance>, - void (*)(VoidPtr, CopyableMovableInstance &&)>::value, - "Types with copy/move ctor should be passed by rvalue reference"); - - // References are passed as references. - static_assert( - std::is_same<Invoker<void, int&>, void (*)(VoidPtr, int&)>::value, - "Reference types should be preserved"); - static_assert( - std::is_same<Invoker<void, CopyableMovableInstance&>, - void (*)(VoidPtr, CopyableMovableInstance&)>::value, - "Reference types should be preserved"); - static_assert( - std::is_same<Invoker<void, CopyableMovableInstance&&>, - void (*)(VoidPtr, CopyableMovableInstance &&)>::value, - "Reference types should be preserved"); - - // Make sure the address of an object received by reference is the same as the - // addess of the object passed by the caller. - { - LargeTrivial obj; - auto test = [&obj](LargeTrivial& input) { ASSERT_EQ(&input, &obj); }; - absl::FunctionRef<void(LargeTrivial&)> ref(test); - ref(obj); - } - - { - Trivial obj; - auto test = [&obj](Trivial& input) { ASSERT_EQ(&input, &obj); }; - absl::FunctionRef<void(Trivial&)> ref(test); - ref(obj); - } -} - -} // namespace -ABSL_NAMESPACE_END -} // namespace absl |