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38 lines
1.1 KiB
C++
38 lines
1.1 KiB
C++
/*
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@copyright Louis Dionne 2014
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Distributed under the Boost Software License, Version 1.0.
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(See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
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*/
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#include <boost/hana/monad/bind_mcd.hpp>
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#include <boost/hana/monad/flatten_mcd.hpp>
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#include <boost/hana/detail/constexpr.hpp>
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#include <boost/hana/detail/minimal/comparable.hpp>
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#include <boost/hana/detail/minimal/monad.hpp>
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#include <boost/hana/detail/static_assert.hpp>
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#include <tuple>
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using namespace boost::hana;
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template <typename mcd>
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void test() {
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constexpr auto monad = detail::minimal::monad<mcd>;
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constexpr auto comparable = detail::minimal::comparable<>;
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BOOST_HANA_CONSTEXPR_LAMBDA auto f = [=](auto x) {
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return monad(std::make_tuple(x));
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};
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BOOST_HANA_STATIC_ASSERT(bind(monad(comparable(1)), f) == f(comparable(1)));
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BOOST_HANA_STATIC_ASSERT((monad(comparable(1)) >> f) == f(comparable(1)));
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// check associativity
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BOOST_HANA_STATIC_ASSERT((monad(comparable(1)) >> f >> f) == f(std::make_tuple(comparable(1))));
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}
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int main() {
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test<Monad::flatten_mcd>();
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test<Monad::bind_mcd>();
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}
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