hana/test/integral_constant/logical.cpp
2017-01-07 14:14:18 -08:00

56 lines
1.5 KiB
C++

// Copyright Louis Dionne 2013-2017
// 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/assert.hpp>
#include <boost/hana/equal.hpp>
#include <boost/hana/eval_if.hpp>
#include <boost/hana/integral_constant.hpp>
#include <boost/hana/not.hpp>
#include <boost/hana/tuple.hpp>
#include <laws/base.hpp>
#include <laws/logical.hpp>
namespace hana = boost::hana;
int main() {
// eval_if
{
auto t = [](auto) { return hana::test::ct_eq<3>{}; };
auto e = [](auto) { return hana::test::ct_eq<4>{}; };
BOOST_HANA_CONSTANT_CHECK(hana::equal(
hana::eval_if(hana::true_c, t, e),
hana::test::ct_eq<3>{}
));
BOOST_HANA_CONSTANT_CHECK(hana::equal(
hana::eval_if(hana::false_c, t, e),
hana::test::ct_eq<4>{}
));
}
// not_
{
BOOST_HANA_CONSTANT_CHECK(hana::equal(
hana::not_(hana::true_c),
hana::false_c
));
BOOST_HANA_CONSTANT_CHECK(hana::equal(
hana::not_(hana::false_c),
hana::true_c
));
}
// laws
hana::test::TestLogical<hana::integral_constant_tag<int>>{hana::make_tuple(
hana::int_c<-2>, hana::int_c<0>, hana::int_c<1>, hana::int_c<3>
)};
hana::test::TestLogical<hana::integral_constant_tag<bool>>{hana::make_tuple(
hana::false_c, hana::true_c
)};
}