/*
@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/ext/std/tuple.hpp>

#include <boost/hana/detail/static_assert.hpp>
#include <boost/hana/integral.hpp>

#include <tuple>
using namespace boost::hana;


int main() {
    BOOST_HANA_STATIC_ASSERT(is_empty(std::make_tuple()));
    BOOST_HANA_STATIC_ASSERT(!is_empty(std::make_tuple(int_<0>)));
    BOOST_HANA_STATIC_ASSERT(!is_empty(std::make_tuple(int_<0>, int_<1>)));

    BOOST_HANA_STATIC_ASSERT(head(std::make_tuple(int_<0>)) == int_<0>);
    BOOST_HANA_STATIC_ASSERT(head(std::make_tuple(int_<0>, int_<1>)) == int_<0>);

    BOOST_HANA_STATIC_ASSERT(tail(std::make_tuple(int_<0>)) == std::make_tuple());
    BOOST_HANA_STATIC_ASSERT(tail(std::make_tuple(int_<0>, int_<1>)) == std::make_tuple(int_<1>));
    BOOST_HANA_STATIC_ASSERT(tail(std::make_tuple(int_<0>, int_<1>, int_<2>)) == std::make_tuple(int_<1>, int_<2>));
}