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Diffstat (limited to 'libcxx/test/std/utilities/expected/expected.void/monadic/transform.pass.cpp')
-rw-r--r-- | libcxx/test/std/utilities/expected/expected.void/monadic/transform.pass.cpp | 126 |
1 files changed, 0 insertions, 126 deletions
diff --git a/libcxx/test/std/utilities/expected/expected.void/monadic/transform.pass.cpp b/libcxx/test/std/utilities/expected/expected.void/monadic/transform.pass.cpp deleted file mode 100644 index ea90006e3199..000000000000 --- a/libcxx/test/std/utilities/expected/expected.void/monadic/transform.pass.cpp +++ /dev/null @@ -1,126 +0,0 @@ -//===----------------------------------------------------------------------===// -// -// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. -// See https://llvm.org/LICENSE.txt for license information. -// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception -// -//===----------------------------------------------------------------------===// - -// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20 - -// <expected> - -// template<class F> constexpr auto transform_error(F&& f) &; -// template<class F> constexpr auto transform_error(F&& f) const &; -// template<class F> constexpr auto transform_error(F&& f) &&; -// template<class F> constexpr auto transform_error(F&& f) const &&; - -#include <expected> -#include <concepts> -#include <cassert> -#include <memory> -#include <type_traits> -#include <utility> - -template <class E, class F> -concept has_transform = - requires(E&& e, F&& f) { - { std::forward<E>(e).transform(std::forward<F>(f)) }; - }; - -// [LWG 3877] https://cplusplus.github.io/LWG/issue3877, check constraint failing but not compile error inside the function body. -static_assert(!has_transform<const std::expected<int, std::unique_ptr<int>>&, int()>); -static_assert(!has_transform<const std::expected<int, std::unique_ptr<int>>&&, int()>); - -constexpr void test_val_types() { - // Test & overload - { - auto l = [] -> int { return 1; }; - std::expected<void, int> v; - std::same_as<std::expected<int, int>> decltype(auto) val = v.transform(l); - assert(val == 1); - } - - // Test const& overload - { - auto l = [] -> int { return 1; }; - const std::expected<void, int> v; - std::same_as<std::expected<int, int>> decltype(auto) val = v.transform(l); - assert(val == 1); - } - - // Test && overload - { - auto l = [] -> int { return 1; }; - std::expected<void, int> v; - std::same_as<std::expected<int, int>> decltype(auto) val = std::move(v).transform(l); - assert(val == 1); - } - - // Test const&& overload - { - auto l = [] -> int { return 1; }; - const std::expected<void, int> v; - std::same_as<std::expected<int, int>> decltype(auto) val = std::move(v).transform(l); - assert(val == 1); - } -} - -constexpr void test_fail() { - // Test & overload - { - auto l = [] -> int { - assert(false); - return 0; - }; - std::expected<void, int> v(std::unexpected<int>(5)); - std::same_as<std::expected<int, int>> decltype(auto) val = v.transform(l); - assert(val.error() == 5); - } - - // Test const& overload - { - auto l = [] -> int { - assert(false); - return 0; - }; - const std::expected<void, int> v(std::unexpected<int>(5)); - std::same_as<std::expected<int, int>> decltype(auto) val = v.transform(l); - assert(val.error() == 5); - } - - // Test && overload - { - auto l = [] -> int { - assert(false); - return 0; - }; - std::expected<void, int> v(std::unexpected<int>(5)); - std::same_as<std::expected<int, int>> decltype(auto) val = std::move(v).transform(l); - assert(val.error() == 5); - } - - // Test const&& overload - { - auto l = [] -> int { - assert(false); - return 0; - }; - const std::expected<void, int> v(std::unexpected<int>(5)); - std::same_as<std::expected<int, int>> decltype(auto) val = std::move(v).transform(l); - assert(val.error() == 5); - } -} - -constexpr bool test() { - test_fail(); - test_val_types(); - return true; -} - -int main(int, char**) { - test(); - static_assert(test()); - - return 0; -} |