66 lines
1.8 KiB
C++
66 lines
1.8 KiB
C++
//===----------------------------------------------------------------------===//
|
|
//
|
|
// 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
|
|
// UNSUPPORTED: libcpp-has-no-incomplete-ranges
|
|
|
|
// <functional>
|
|
|
|
// ranges::equal_to
|
|
|
|
#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 NotEqualityComparable {
|
|
friend bool operator==(const NotEqualityComparable&, const NotEqualityComparable&);
|
|
friend bool operator!=(const NotEqualityComparable&, const NotEqualityComparable&) = delete;
|
|
};
|
|
|
|
static_assert(!std::is_invocable_v<std::ranges::equal_to, NotEqualityComparable, NotEqualityComparable>);
|
|
static_assert(!std::is_invocable_v<std::ranges::equal_to, int, MoveOnly>);
|
|
static_assert(std::is_invocable_v<std::ranges::equal_to, explicit_operators, explicit_operators>);
|
|
|
|
static_assert(requires { typename std::ranges::equal_to::is_transparent; });
|
|
|
|
constexpr bool test() {
|
|
auto fn = std::ranges::equal_to();
|
|
|
|
assert(fn(MoveOnly(42), MoveOnly(42)));
|
|
|
|
ForwardingTestObject a;
|
|
ForwardingTestObject b;
|
|
assert(!fn(a, b));
|
|
assert(fn(std::move(a), std::move(b)));
|
|
|
|
assert(!fn(1, 2));
|
|
assert(!fn(2, 1));
|
|
assert(fn(2, 2));
|
|
|
|
assert(!fn(2, 1L));
|
|
|
|
return true;
|
|
}
|
|
|
|
int main(int, char**) {
|
|
|
|
test();
|
|
static_assert(test());
|
|
|
|
// test total ordering of int* for equal_to<int*> and equal_to<void>.
|
|
do_pointer_comparison_test(std::ranges::equal_to());
|
|
|
|
return 0;
|
|
}
|