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52 lines
1.8 KiB
C++
52 lines
1.8 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/foldable/lazy_foldr_mcd.hpp>
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#include <boost/hana/detail/minimal/foldable.hpp>
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#include <boost/hana/detail/static_assert.hpp>
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#include <boost/hana/integral.hpp>
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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 foldable = detail::minimal::foldable<mcd>;
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// compile-time
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BOOST_HANA_STATIC_ASSERT(!elem(int_<0>, foldable()));
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BOOST_HANA_STATIC_ASSERT( elem(int_<0>, foldable(int_<0>)));
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BOOST_HANA_STATIC_ASSERT(!elem(int_<0>, foldable(int_<1>)));
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BOOST_HANA_STATIC_ASSERT( elem(int_<0>, foldable(int_<0>, int_<1>)));
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BOOST_HANA_STATIC_ASSERT(!elem(int_<0>, foldable(int_<1>, int_<2>)));
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BOOST_HANA_STATIC_ASSERT( elem(int_<0>, foldable(int_<1>, int_<0>)));
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BOOST_HANA_STATIC_ASSERT( elem(int_<0>, foldable(int_<1>, int_<0>, int_<3>)));
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BOOST_HANA_STATIC_ASSERT(!elem(int_<0>, foldable(int_<1>, int_<2>, int_<3>)));
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BOOST_HANA_STATIC_ASSERT( elem(int_<0>, foldable(int_<1>, int_<2>, int_<0>)));
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BOOST_HANA_STATIC_ASSERT( elem(int_<0>, foldable(int_<0>, int_<2>, int_<0>)));
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// constexpr/runtime
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BOOST_HANA_STATIC_ASSERT( elem(0, foldable(0)));
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BOOST_HANA_STATIC_ASSERT(!elem(0, foldable(1)));
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BOOST_HANA_STATIC_ASSERT( elem(0, foldable(0, 1)));
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BOOST_HANA_STATIC_ASSERT(!elem(0, foldable(1, 2)));
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BOOST_HANA_STATIC_ASSERT( elem(0, foldable(1, 0)));
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BOOST_HANA_STATIC_ASSERT( elem(0, foldable(1, 0, 3)));
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BOOST_HANA_STATIC_ASSERT(!elem(0, foldable(1, 2, 3)));
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BOOST_HANA_STATIC_ASSERT( elem(0, foldable(1, 2, 0)));
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BOOST_HANA_STATIC_ASSERT( elem(0, foldable(0, 2, 0)));
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}
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int main() {
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test<Foldable::lazy_foldr_mcd>();
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}
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