| //===----------------------------------------------------------------------===// |
| // |
| // 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 |
| // UNSUPPORTED: libcpp-no-concepts |
| |
| // <functional> |
| |
| // ranges::less_equal |
| |
| #include <functional> |
| #include <type_traits> |
| #include <cassert> |
| |
| #include "test_macros.h" |
| #include "compare_types.h" |
| #include "MoveOnly.h" |
| #include "pointer_comparison_test_helper.h" |
| |
| struct NotTotallyOrdered { |
| friend bool operator<(const NotTotallyOrdered&, const NotTotallyOrdered&); |
| }; |
| |
| static_assert(!std::is_invocable_v<std::ranges::less_equal, NotTotallyOrdered, NotTotallyOrdered>); |
| static_assert(!std::is_invocable_v<std::ranges::less_equal, int, MoveOnly>); |
| static_assert(std::is_invocable_v<std::ranges::less_equal, explicit_operators, explicit_operators>); |
| |
| static_assert(requires { typename std::ranges::less_equal::is_transparent; }); |
| |
| constexpr bool test() { |
| auto fn = std::ranges::less_equal(); |
| |
| assert(fn(MoveOnly(41), MoveOnly(42))); |
| |
| // These are the opposite of other tests. |
| ForwardingTestObject a; |
| ForwardingTestObject b; |
| assert(fn(a, b)); |
| assert(!fn(std::move(a), std::move(b))); |
| |
| assert(fn(1, 2)); |
| assert(fn(2, 2)); |
| assert(!fn(2, 1)); |
| |
| assert(!fn(2, 1L)); |
| |
| return true; |
| } |
| |
| int main(int, char**) { |
| |
| test(); |
| static_assert(test()); |
| |
| // test total ordering of int* for less_equal<int*> and less_equal<void>. |
| do_pointer_comparison_test(std::ranges::less_equal()); |
| |
| return 0; |
| } |