abf91449a3
I noticed a typo in the directory name `refwrap.comparissons`, then did a quick pass to fix typos elsewhere in the tests. All fixes were manual (some carefully search-and-replaced); I used [cspell](https://www.npmjs.com/package/cspell) to find them.
65 lines
1.5 KiB
C++
65 lines
1.5 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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// REQUIRES: std-at-least-c++26
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// <functional>
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// class reference_wrapper
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// [refwrap.comparisons], comparisons
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// friend constexpr bool operator==(reference_wrapper, reference_wrapper<const T>); // Since C++26
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#include <cassert>
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#include <concepts>
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#include <functional>
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#include "test_comparisons.h"
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#include "test_macros.h"
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// Test SFINAE.
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static_assert(
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HasOperatorEqual<std::reference_wrapper<EqualityComparable>, std::reference_wrapper<const EqualityComparable>>);
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static_assert(
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!HasOperatorEqual<std::reference_wrapper<EqualityComparable>, std::reference_wrapper<const NonComparable>>);
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// Test equality.
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template <typename T>
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constexpr void test() {
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T i{92};
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T j{84};
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std::reference_wrapper<T> rw1{i};
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std::reference_wrapper<T> rw3{j};
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std::reference_wrapper<const T> crw1{i};
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std::reference_wrapper<const T> crw3{j};
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AssertEqualityReturnBool<decltype(rw1), decltype(crw1)>();
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assert(testEquality(rw1, crw1, true));
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assert(testEquality(rw1, crw3, false));
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}
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constexpr bool test() {
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test<int>();
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test<EqualityComparable>();
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return true;
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}
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int main(int, char**) {
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test();
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static_assert(test());
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return 0;
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}
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