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hana/test/maybe/comparable/laws.cpp
2014-07-16 17:12:19 -04:00

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/*
@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/maybe.hpp>
#include <boost/hana/comparable/laws.hpp>
#include <boost/hana/detail/minimal/comparable.hpp>
#include <boost/hana/detail/static_assert.hpp>
#include <boost/hana/list/instance.hpp>
using namespace boost::hana;
template <int i>
constexpr auto x = detail::minimal::comparable<>(i);
int main() {
BOOST_HANA_STATIC_ASSERT(Comparable::laws::check(
list(
nothing,
just(x<0>),
just(x<1>),
just(x<2>)
)
));
}