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//===----------------------------------------------------------------------===//
//
// 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++98, c++03, c++11
// <experimental/type_traits>
#include <experimental/type_traits>
#include <string>
#include "test_macros.h"
namespace ex = std::experimental;
template <typename T>
using copy_assign_t = decltype(std::declval<T&>() = std::declval<T const &>());
struct not_assignable {
not_assignable & operator=(const not_assignable&) = delete;
};
template <typename T, bool b>
void test() {
static_assert( b == ex::is_detected <copy_assign_t, T>::value, "" );
static_assert( b == ex::is_detected_v<copy_assign_t, T>, "" );
}
int main () {
test<int, true>();
test<std::string, true>();
test<not_assignable, false>();
}
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