37 lines
956 B
C++
37 lines
956 B
C++
|
|
// Copyright 2019 Peter Dimov.
|
|
//
|
|
// Distributed under the Boost Software License, Version 1.0.
|
|
//
|
|
// See accompanying file LICENSE_1_0.txt or copy at
|
|
// http://www.boost.org/LICENSE_1_0.txt
|
|
|
|
|
|
#include <boost/mp11/utility.hpp>
|
|
#include <boost/core/lightweight_test_trait.hpp>
|
|
#include <type_traits>
|
|
|
|
template<class T> using is_const_ = std::is_const<T>;
|
|
|
|
struct Q_is_const
|
|
{
|
|
template<class T> using fn = std::is_const<T>;
|
|
};
|
|
|
|
int main()
|
|
{
|
|
using boost::mp11::mp_not_fn;
|
|
using boost::mp11::mp_not_fn_q;
|
|
|
|
BOOST_TEST_TRAIT_TRUE((mp_not_fn<std::is_const>::fn<void>));
|
|
BOOST_TEST_TRAIT_FALSE((mp_not_fn<std::is_const>::fn<void const>));
|
|
|
|
BOOST_TEST_TRAIT_TRUE((mp_not_fn<is_const_>::fn<void>));
|
|
BOOST_TEST_TRAIT_FALSE((mp_not_fn<is_const_>::fn<void const>));
|
|
|
|
BOOST_TEST_TRAIT_TRUE((mp_not_fn_q<Q_is_const>::fn<void>));
|
|
BOOST_TEST_TRAIT_FALSE((mp_not_fn_q<Q_is_const>::fn<void const>));
|
|
|
|
return boost::report_errors();
|
|
}
|