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// Copyright 2023 Peter Dimov
// Distributed under the Boost Software License, Version 1.0.
// https://www.boost.org/LICENSE_1_0.txt
#include <boost/mp11/algorithm.hpp>
#include <boost/mp11/list.hpp>
#include <boost/mp11/utility.hpp>
#include <boost/mp11/integral.hpp>
#if !defined(BOOST_MP11_HAS_TEMPLATE_AUTO)
#pragma message("Test skipped because BOOST_MP11_HAS_TEMPLATE_AUTO is not defined")
int main() {}
#else
#include <boost/core/lightweight_test_trait.hpp>
template<auto... A> struct V1 {};
template<int... I> struct V2 {};
int main()
{
using boost::mp11::mp_back;
using boost::mp11::mp_false;
using boost::mp11::mp_int;
using L1 = V1<false>;
BOOST_TEST_TRAIT_SAME(mp_back<L1>, mp_false);
using L2 = V1<false, true, 4>;
BOOST_TEST_TRAIT_SAME(mp_back<L2>, mp_int<4>);
using L3 = V2<0>;
BOOST_TEST_TRAIT_SAME(mp_back<L3>, mp_int<0>);
using L4 = V2<0, 1, 2, 3, 4, 5, 6, 7, 8, 9>;
BOOST_TEST_TRAIT_SAME(mp_back<L4>, mp_int<9>);
using boost::mp11::mp_iota_c;
using boost::mp11::mp_rename_v;
using boost::mp11::mp_size_t;
int const N = 137;
using L6 = mp_rename_v<mp_iota_c<N>, V1>;
BOOST_TEST_TRAIT_SAME(mp_back<L6>, mp_size_t<N-1>);
using boost::mp11::mp_valid;
using L7 = V1<>;
BOOST_TEST_TRAIT_FALSE((mp_valid<mp_back, L7>));
return boost::report_errors();
}
#endif
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