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hana/test/map/from_list.cpp

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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/map.hpp>
#include <boost/hana/detail/constexpr.hpp>
#include <boost/hana/detail/minimal/list.hpp>
#include <boost/hana/detail/minimal/product.hpp>
#include <boost/hana/detail/static_assert.hpp>
#include <boost/hana/integral.hpp>
using namespace boost::hana;
template <int i>
constexpr auto key = int_<i>;
template <int i>
constexpr auto value = int_<i + 100>;
template <int i, int j>
BOOST_HANA_CONSTEXPR_LAMBDA auto p = detail::minimal::product<>(key<i>, value<j>);
int main() {
constexpr auto list = detail::minimal::list<>;
BOOST_HANA_STATIC_ASSERT(to<Map>(list()) == map());
BOOST_HANA_STATIC_ASSERT(to<Map>(list(p<1, 1>)) == map(p<1, 1>));
BOOST_HANA_STATIC_ASSERT(to<Map>(list(p<1, 1>, p<2, 2>)) == map(p<1, 1>, p<2, 2>));
BOOST_HANA_STATIC_ASSERT(to<Map>(list(p<1, 1>, p<2, 2>, p<3, 3>)) == map(p<1, 1>, p<2, 2>, p<3, 3>));
}