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hana/test/foldable/sum.cpp
2014-07-16 16:26:23 -04:00

34 lines
1.2 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/foldable/lazy_foldr_mcd.hpp>
#include <boost/hana/detail/minimal/foldable.hpp>
#include <boost/hana/detail/static_assert.hpp>
#include <boost/hana/integral.hpp>
using namespace boost::hana;
template <typename mcd>
void test() {
constexpr auto foldable = detail::minimal::foldable<mcd>;
BOOST_HANA_STATIC_ASSERT(sum(foldable()) == int_<0>);
BOOST_HANA_STATIC_ASSERT(sum(foldable(int_<1>)) == int_<1>);
BOOST_HANA_STATIC_ASSERT(sum(foldable(int_<1>, int_<2>)) == int_<1 + 2>);
BOOST_HANA_STATIC_ASSERT(sum(foldable(int_<1>, int_<2>, int_<3>)) == int_<1 + 2 + 3>);
BOOST_HANA_STATIC_ASSERT(sum(foldable(int_<1>, int_<2>, int_<3>, int_<4>)) == int_<1 + 2 + 3 + 4>);
BOOST_HANA_STATIC_ASSERT(sum(foldable(1)) == 1);
BOOST_HANA_STATIC_ASSERT(sum(foldable(1, 2)) == 1 + 2);
BOOST_HANA_STATIC_ASSERT(sum(foldable(1, 2, 3)) == 1 + 2 + 3);
BOOST_HANA_STATIC_ASSERT(sum(foldable(1, 2, 3, 4)) == 1 + 2 + 3 + 4);
}
int main() {
test<Foldable::lazy_foldr_mcd>();
}