// Copyright 2017 Peter Dimov.
// Distributed under the Boost Software License, Version 1.0.

#include <boost/hash2/is_tuple_like.hpp>
#include <boost/core/lightweight_test_trait.hpp>
#include <boost/array.hpp>
#include <boost/config.hpp>
#include <utility>
#if !defined(BOOST_NO_CXX11_HDR_ARRAY)
# include <array>
#endif
#if !defined(BOOST_NO_CXX11_HDR_TUPLE)
# include <tuple>
#endif

struct X
{
};

int main()
{
    using boost::hash2::is_tuple_like;

    BOOST_TEST_TRAIT_FALSE((is_tuple_like<void>));
    BOOST_TEST_TRAIT_FALSE((is_tuple_like<void const>));

    BOOST_TEST_TRAIT_FALSE((is_tuple_like<int>));
    BOOST_TEST_TRAIT_FALSE((is_tuple_like<int const>));

    BOOST_TEST_TRAIT_FALSE((is_tuple_like<X>));
    BOOST_TEST_TRAIT_FALSE((is_tuple_like<X const>));

    BOOST_TEST_TRAIT_FALSE((is_tuple_like<int[2]>));
    BOOST_TEST_TRAIT_FALSE((is_tuple_like<int const[2]>));

    BOOST_TEST_TRAIT_TRUE((is_tuple_like< std::pair<int, X> >));
    BOOST_TEST_TRAIT_TRUE((is_tuple_like< std::pair<int, X> const >));

#if !defined(BOOST_NO_CXX11_HDR_ARRAY)

    BOOST_TEST_TRAIT_TRUE((is_tuple_like< std::array<X, 0> >));
    BOOST_TEST_TRAIT_TRUE((is_tuple_like< std::array<X, 0> const >));

    BOOST_TEST_TRAIT_TRUE((is_tuple_like< std::array<X, 1> >));
    BOOST_TEST_TRAIT_TRUE((is_tuple_like< std::array<X, 1> const >));

    BOOST_TEST_TRAIT_TRUE((is_tuple_like< std::array<X, 2> >));
    BOOST_TEST_TRAIT_TRUE((is_tuple_like< std::array<X, 2> const >));

    BOOST_TEST_TRAIT_TRUE((is_tuple_like< std::array<X, 3> >));
    BOOST_TEST_TRAIT_TRUE((is_tuple_like< std::array<X, 3> const >));

#endif

#if !defined(BOOST_NO_CXX11_HDR_TUPLE)

    BOOST_TEST_TRAIT_TRUE((is_tuple_like< std::tuple<> >));
    BOOST_TEST_TRAIT_TRUE((is_tuple_like< std::tuple<> const >));

    BOOST_TEST_TRAIT_TRUE((is_tuple_like< std::tuple<X> >));
    BOOST_TEST_TRAIT_TRUE((is_tuple_like< std::tuple<X> const >));

    BOOST_TEST_TRAIT_TRUE((is_tuple_like< std::tuple<X, X> >));
    BOOST_TEST_TRAIT_TRUE((is_tuple_like< std::tuple<X, X> const >));

    BOOST_TEST_TRAIT_TRUE((is_tuple_like< std::tuple<X, X, X> >));
    BOOST_TEST_TRAIT_TRUE((is_tuple_like< std::tuple<X, X, X> const >));

#endif

    BOOST_TEST_TRAIT_TRUE((is_tuple_like< boost::array<X, 0> >));
    BOOST_TEST_TRAIT_TRUE((is_tuple_like< boost::array<X, 0> const >));

    BOOST_TEST_TRAIT_TRUE((is_tuple_like< boost::array<X, 1> >));
    BOOST_TEST_TRAIT_TRUE((is_tuple_like< boost::array<X, 1> const >));

    BOOST_TEST_TRAIT_TRUE((is_tuple_like< boost::array<X, 2> >));
    BOOST_TEST_TRAIT_TRUE((is_tuple_like< boost::array<X, 2> const >));

    BOOST_TEST_TRAIT_TRUE((is_tuple_like< boost::array<X, 3> >));
    BOOST_TEST_TRAIT_TRUE((is_tuple_like< boost::array<X, 3> const >));

    return boost::report_errors();
}