64 lines
1.8 KiB
C++
64 lines
1.8 KiB
C++
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// Copyright 2015 Peter Dimov.
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//
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// Distributed under the Boost Software License, Version 1.0.
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//
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// See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt
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#include <boost/mp11/algorithm.hpp>
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#include <boost/mp11/list.hpp>
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#include <boost/mp11/integral.hpp>
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#include <boost/core/lightweight_test_trait.hpp>
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#include <type_traits>
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#include <tuple>
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#include <utility>
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struct X1 {};
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struct X2 {};
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struct X3 {};
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int main()
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{
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using boost::mp11::mp_list;
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using boost::mp11::mp_count;
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using boost::mp11::mp_size_t;
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{
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using L1 = mp_list<>;
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BOOST_TEST_TRAIT_TRUE((std::is_same<mp_count<L1, void>, mp_size_t<0>>));
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using L2 = mp_list<X1, X2, X3, X2, X3, X3>;
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BOOST_TEST_TRAIT_TRUE((std::is_same<mp_count<L2, void>, mp_size_t<0>>));
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BOOST_TEST_TRAIT_TRUE((std::is_same<mp_count<L2, X1>, mp_size_t<1>>));
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BOOST_TEST_TRAIT_TRUE((std::is_same<mp_count<L2, X2>, mp_size_t<2>>));
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BOOST_TEST_TRAIT_TRUE((std::is_same<mp_count<L2, X3>, mp_size_t<3>>));
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}
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{
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using L3 = std::tuple<>;
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BOOST_TEST_TRAIT_TRUE((std::is_same<mp_count<L3, void>, mp_size_t<0>>));
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using L4 = std::tuple<X1, X2, X3, X2, X3, X3>;
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BOOST_TEST_TRAIT_TRUE((std::is_same<mp_count<L4, void>, mp_size_t<0>>));
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BOOST_TEST_TRAIT_TRUE((std::is_same<mp_count<L4, X1>, mp_size_t<1>>));
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BOOST_TEST_TRAIT_TRUE((std::is_same<mp_count<L4, X2>, mp_size_t<2>>));
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BOOST_TEST_TRAIT_TRUE((std::is_same<mp_count<L4, X3>, mp_size_t<3>>));
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}
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{
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using L5 = std::pair<X1, X2>;
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BOOST_TEST_TRAIT_TRUE((std::is_same<mp_count<L5, void>, mp_size_t<0>>));
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BOOST_TEST_TRAIT_TRUE((std::is_same<mp_count<L5, X1>, mp_size_t<1>>));
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BOOST_TEST_TRAIT_TRUE((std::is_same<mp_count<L5, X2>, mp_size_t<1>>));
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}
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return boost::report_errors();
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}
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