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hana/test/functor/laws.cpp
2014-07-19 15:08:58 -04:00

47 lines
1.1 KiB
C++

/*
@copyright Louis Dionne 2014
Distributed under the Boost Software License, Version 1.0.
(See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
*/
#include <boost/hana/functor/adjust_mcd.hpp>
#include <boost/hana/functor/fmap_mcd.hpp>
#include <boost/hana/functor/laws.hpp>
#include <boost/hana/detail/constexpr.hpp>
#include <boost/hana/detail/minimal/functor.hpp>
#include <boost/hana/detail/static_assert.hpp>
#include <boost/hana/integral.hpp>
#include <boost/hana/list/instance.hpp>
#include <tuple>
using namespace boost::hana;
template <int i>
constexpr auto x = int_<i>;
BOOST_HANA_CONSTEXPR_LAMBDA auto f = [](auto x) {
return std::make_tuple(1, x);
};
BOOST_HANA_CONSTEXPR_LAMBDA auto g = [](auto x) {
return std::make_tuple(2, x);
};
template <typename mcd>
void test() {
constexpr auto functor = detail::minimal::functor<mcd>;
BOOST_HANA_STATIC_ASSERT(Functor::laws::check(
list(functor(x<0>)),
list(f),
list(g)
));
}
int main() {
test<Functor::fmap_mcd>();
test<Functor::adjust_mcd>();
}