diff options
Diffstat (limited to 'third_party/abseil_cpp/absl/base/invoke_test.cc')
-rw-r--r-- | third_party/abseil_cpp/absl/base/invoke_test.cc | 229 |
1 files changed, 0 insertions, 229 deletions
diff --git a/third_party/abseil_cpp/absl/base/invoke_test.cc b/third_party/abseil_cpp/absl/base/invoke_test.cc deleted file mode 100644 index bcdef36c3bfa..000000000000 --- a/third_party/abseil_cpp/absl/base/invoke_test.cc +++ /dev/null @@ -1,229 +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. - -#include "absl/base/internal/invoke.h" - -#include <functional> -#include <memory> -#include <string> -#include <utility> - -#include "gmock/gmock.h" -#include "gtest/gtest.h" -#include "absl/memory/memory.h" -#include "absl/strings/str_cat.h" - -namespace absl { -ABSL_NAMESPACE_BEGIN -namespace base_internal { -namespace { - -int Function(int a, int b) { return a - b; } - -int Sink(std::unique_ptr<int> p) { - return *p; -} - -std::unique_ptr<int> Factory(int n) { - return make_unique<int>(n); -} - -void NoOp() {} - -struct ConstFunctor { - int operator()(int a, int b) const { return a - b; } -}; - -struct MutableFunctor { - int operator()(int a, int b) { return a - b; } -}; - -struct EphemeralFunctor { - int operator()(int a, int b) && { return a - b; } -}; - -struct OverloadedFunctor { - template <typename... Args> - std::string operator()(const Args&... args) & { - return StrCat("&", args...); - } - template <typename... Args> - std::string operator()(const Args&... args) const& { - return StrCat("const&", args...); - } - template <typename... Args> - std::string operator()(const Args&... args) && { - return StrCat("&&", args...); - } -}; - -struct Class { - int Method(int a, int b) { return a - b; } - int ConstMethod(int a, int b) const { return a - b; } - int RefMethod(int a, int b) & { return a - b; } - int RefRefMethod(int a, int b) && { return a - b; } - int NoExceptMethod(int a, int b) noexcept { return a - b; } - int VolatileMethod(int a, int b) volatile { return a - b; } - - int member; -}; - -struct FlipFlop { - int ConstMethod() const { return member; } - FlipFlop operator*() const { return {-member}; } - - int member; -}; - -// CallMaybeWithArg(f) resolves either to invoke(f) or invoke(f, 42), depending -// on which one is valid. -template <typename F> -decltype(base_internal::invoke(std::declval<const F&>())) CallMaybeWithArg( - const F& f) { - return base_internal::invoke(f); -} - -template <typename F> -decltype(base_internal::invoke(std::declval<const F&>(), 42)) CallMaybeWithArg( - const F& f) { - return base_internal::invoke(f, 42); -} - -TEST(InvokeTest, Function) { - EXPECT_EQ(1, base_internal::invoke(Function, 3, 2)); - EXPECT_EQ(1, base_internal::invoke(&Function, 3, 2)); -} - -TEST(InvokeTest, NonCopyableArgument) { - EXPECT_EQ(42, base_internal::invoke(Sink, make_unique<int>(42))); -} - -TEST(InvokeTest, NonCopyableResult) { - EXPECT_THAT(base_internal::invoke(Factory, 42), ::testing::Pointee(42)); -} - -TEST(InvokeTest, VoidResult) { base_internal::invoke(NoOp); } - -TEST(InvokeTest, ConstFunctor) { - EXPECT_EQ(1, base_internal::invoke(ConstFunctor(), 3, 2)); -} - -TEST(InvokeTest, MutableFunctor) { - MutableFunctor f; - EXPECT_EQ(1, base_internal::invoke(f, 3, 2)); - EXPECT_EQ(1, base_internal::invoke(MutableFunctor(), 3, 2)); -} - -TEST(InvokeTest, EphemeralFunctor) { - EphemeralFunctor f; - EXPECT_EQ(1, base_internal::invoke(std::move(f), 3, 2)); - EXPECT_EQ(1, base_internal::invoke(EphemeralFunctor(), 3, 2)); -} - -TEST(InvokeTest, OverloadedFunctor) { - OverloadedFunctor f; - const OverloadedFunctor& cf = f; - - EXPECT_EQ("&", base_internal::invoke(f)); - EXPECT_EQ("& 42", base_internal::invoke(f, " 42")); - - EXPECT_EQ("const&", base_internal::invoke(cf)); - EXPECT_EQ("const& 42", base_internal::invoke(cf, " 42")); - - EXPECT_EQ("&&", base_internal::invoke(std::move(f))); - - OverloadedFunctor f2; - EXPECT_EQ("&& 42", base_internal::invoke(std::move(f2), " 42")); -} - -TEST(InvokeTest, ReferenceWrapper) { - ConstFunctor cf; - MutableFunctor mf; - EXPECT_EQ(1, base_internal::invoke(std::cref(cf), 3, 2)); - EXPECT_EQ(1, base_internal::invoke(std::ref(cf), 3, 2)); - EXPECT_EQ(1, base_internal::invoke(std::ref(mf), 3, 2)); -} - -TEST(InvokeTest, MemberFunction) { - std::unique_ptr<Class> p(new Class); - std::unique_ptr<const Class> cp(new Class); - std::unique_ptr<volatile Class> vp(new Class); - - EXPECT_EQ(1, base_internal::invoke(&Class::Method, p, 3, 2)); - EXPECT_EQ(1, base_internal::invoke(&Class::Method, p.get(), 3, 2)); - EXPECT_EQ(1, base_internal::invoke(&Class::Method, *p, 3, 2)); - EXPECT_EQ(1, base_internal::invoke(&Class::RefMethod, p, 3, 2)); - EXPECT_EQ(1, base_internal::invoke(&Class::RefMethod, p.get(), 3, 2)); - EXPECT_EQ(1, base_internal::invoke(&Class::RefMethod, *p, 3, 2)); - EXPECT_EQ(1, base_internal::invoke(&Class::RefRefMethod, std::move(*p), 3, - 2)); // NOLINT - EXPECT_EQ(1, base_internal::invoke(&Class::NoExceptMethod, p, 3, 2)); - EXPECT_EQ(1, base_internal::invoke(&Class::NoExceptMethod, p.get(), 3, 2)); - EXPECT_EQ(1, base_internal::invoke(&Class::NoExceptMethod, *p, 3, 2)); - - EXPECT_EQ(1, base_internal::invoke(&Class::ConstMethod, p, 3, 2)); - EXPECT_EQ(1, base_internal::invoke(&Class::ConstMethod, p.get(), 3, 2)); - EXPECT_EQ(1, base_internal::invoke(&Class::ConstMethod, *p, 3, 2)); - - EXPECT_EQ(1, base_internal::invoke(&Class::ConstMethod, cp, 3, 2)); - EXPECT_EQ(1, base_internal::invoke(&Class::ConstMethod, cp.get(), 3, 2)); - EXPECT_EQ(1, base_internal::invoke(&Class::ConstMethod, *cp, 3, 2)); - - EXPECT_EQ(1, base_internal::invoke(&Class::VolatileMethod, p, 3, 2)); - EXPECT_EQ(1, base_internal::invoke(&Class::VolatileMethod, p.get(), 3, 2)); - EXPECT_EQ(1, base_internal::invoke(&Class::VolatileMethod, *p, 3, 2)); - EXPECT_EQ(1, base_internal::invoke(&Class::VolatileMethod, vp, 3, 2)); - EXPECT_EQ(1, base_internal::invoke(&Class::VolatileMethod, vp.get(), 3, 2)); - EXPECT_EQ(1, base_internal::invoke(&Class::VolatileMethod, *vp, 3, 2)); - - EXPECT_EQ(1, - base_internal::invoke(&Class::Method, make_unique<Class>(), 3, 2)); - EXPECT_EQ(1, base_internal::invoke(&Class::ConstMethod, make_unique<Class>(), - 3, 2)); - EXPECT_EQ(1, base_internal::invoke(&Class::ConstMethod, - make_unique<const Class>(), 3, 2)); -} - -TEST(InvokeTest, DataMember) { - std::unique_ptr<Class> p(new Class{42}); - std::unique_ptr<const Class> cp(new Class{42}); - EXPECT_EQ(42, base_internal::invoke(&Class::member, p)); - EXPECT_EQ(42, base_internal::invoke(&Class::member, *p)); - EXPECT_EQ(42, base_internal::invoke(&Class::member, p.get())); - - base_internal::invoke(&Class::member, p) = 42; - base_internal::invoke(&Class::member, p.get()) = 42; - - EXPECT_EQ(42, base_internal::invoke(&Class::member, cp)); - EXPECT_EQ(42, base_internal::invoke(&Class::member, *cp)); - EXPECT_EQ(42, base_internal::invoke(&Class::member, cp.get())); -} - -TEST(InvokeTest, FlipFlop) { - FlipFlop obj = {42}; - // This call could resolve to (obj.*&FlipFlop::ConstMethod)() or - // ((*obj).*&FlipFlop::ConstMethod)(). We verify that it's the former. - EXPECT_EQ(42, base_internal::invoke(&FlipFlop::ConstMethod, obj)); - EXPECT_EQ(42, base_internal::invoke(&FlipFlop::member, obj)); -} - -TEST(InvokeTest, SfinaeFriendly) { - CallMaybeWithArg(NoOp); - EXPECT_THAT(CallMaybeWithArg(Factory), ::testing::Pointee(42)); -} - -} // namespace -} // namespace base_internal -ABSL_NAMESPACE_END -} // namespace absl |