forked from boostorg/mp11
61 lines
2.2 KiB
C++
61 lines
2.2 KiB
C++
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// Copyright 2015, 2017 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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struct X4 {};
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struct X5 {};
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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_replace_at;
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using boost::mp11::mp_int;
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using boost::mp11::mp_true;
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using boost::mp11::mp_false;
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{
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using L = mp_list<X1, X2, X3, X4, X5>;
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BOOST_TEST_TRAIT_TRUE((std::is_same<mp_replace_at<L, mp_int<0>, void>, mp_list<void, X2, X3, X4, X5>>));
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BOOST_TEST_TRAIT_TRUE((std::is_same<mp_replace_at<L, mp_int<1>, void>, mp_list<X1, void, X3, X4, X5>>));
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BOOST_TEST_TRAIT_TRUE((std::is_same<mp_replace_at<L, mp_int<2>, void>, mp_list<X1, X2, void, X4, X5>>));
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BOOST_TEST_TRAIT_TRUE((std::is_same<mp_replace_at<L, mp_int<3>, void>, mp_list<X1, X2, X3, void, X5>>));
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BOOST_TEST_TRAIT_TRUE((std::is_same<mp_replace_at<L, mp_int<4>, void>, mp_list<X1, X2, X3, X4, void>>));
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}
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{
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using L = std::tuple<X1, X2, X3, X4, X5>;
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BOOST_TEST_TRAIT_TRUE((std::is_same<mp_replace_at<L, mp_int<0>, void>, std::tuple<void, X2, X3, X4, X5>>));
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BOOST_TEST_TRAIT_TRUE((std::is_same<mp_replace_at<L, mp_int<1>, void>, std::tuple<X1, void, X3, X4, X5>>));
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BOOST_TEST_TRAIT_TRUE((std::is_same<mp_replace_at<L, mp_int<2>, void>, std::tuple<X1, X2, void, X4, X5>>));
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BOOST_TEST_TRAIT_TRUE((std::is_same<mp_replace_at<L, mp_int<3>, void>, std::tuple<X1, X2, X3, void, X5>>));
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BOOST_TEST_TRAIT_TRUE((std::is_same<mp_replace_at<L, mp_int<4>, void>, std::tuple<X1, X2, X3, X4, void>>));
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}
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{
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using L = std::pair<X1, X2>;
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BOOST_TEST_TRAIT_TRUE((std::is_same<mp_replace_at<L, mp_false, void>, std::pair<void, X2>>));
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BOOST_TEST_TRAIT_TRUE((std::is_same<mp_replace_at<L, mp_true, void>, std::pair<X1, void>>));
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}
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return boost::report_errors();
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}
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