ceph/src/boost/libs/mp11/test/mp_nth_element_q.cpp

   1
   2 // Copyright 2017 Peter Dimov.
   3 //
   4 // Distributed under the Boost Software License, Version 1.0.
   5 //
   6 // See accompanying file LICENSE_1_0.txt or copy at
   7 // http://www.boost.org/LICENSE_1_0.txt
   8
   9
  10 #include <boost/mp11/algorithm.hpp>
  11 #include <boost/mp11/list.hpp>
  12 #include <boost/mp11/integral.hpp>
  13 #include <boost/mp11/function.hpp>
  14 #include <boost/mp11/utility.hpp>
  15 #include <boost/core/lightweight_test_trait.hpp>
  16 #include <type_traits>
  17 #include <tuple>
  18
  19 int main()
  20 {
  21     using boost::mp11::mp_nth_element_q;
  22     using boost::mp11::mp_list_c;
  23     using boost::mp11::mp_sort_q;
  24     using boost::mp11::mp_less;
  25     using boost::mp11::mp_at_c;
  26     using boost::mp11::mp_size_t;
  27     using boost::mp11::mp_rename;
  28     using boost::mp11::mp_quote;
  29
  30     using Q_less = mp_quote<mp_less>;
  31
  32     {
  33         using L1 = mp_list_c<int, 7, 1, 11, 3, 2, 2, 4>;
  34         using L2 = mp_sort_q<L1, Q_less>;
  35
  36         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_nth_element_q<L1, mp_size_t<0>, Q_less>, mp_at_c<L2, 0>>));
  37         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_nth_element_q<L1, mp_size_t<1>, Q_less>, mp_at_c<L2, 1>>));
  38         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_nth_element_q<L1, mp_size_t<2>, Q_less>, mp_at_c<L2, 2>>));
  39         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_nth_element_q<L1, mp_size_t<3>, Q_less>, mp_at_c<L2, 3>>));
  40         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_nth_element_q<L1, mp_size_t<4>, Q_less>, mp_at_c<L2, 4>>));
  41         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_nth_element_q<L1, mp_size_t<5>, Q_less>, mp_at_c<L2, 5>>));
  42         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_nth_element_q<L1, mp_size_t<6>, Q_less>, mp_at_c<L2, 6>>));
  43     }
  44
  45     {
  46         using L1 = mp_rename<mp_list_c<int, 7, 1, 11, 3, 2, 2, 4>, std::tuple>;
  47         using L2 = mp_sort_q<L1, Q_less>;
  48
  49         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_nth_element_q<L1, mp_size_t<0>, Q_less>, mp_at_c<L2, 0>>));
  50         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_nth_element_q<L1, mp_size_t<1>, Q_less>, mp_at_c<L2, 1>>));
  51         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_nth_element_q<L1, mp_size_t<2>, Q_less>, mp_at_c<L2, 2>>));
  52         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_nth_element_q<L1, mp_size_t<3>, Q_less>, mp_at_c<L2, 3>>));
  53         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_nth_element_q<L1, mp_size_t<4>, Q_less>, mp_at_c<L2, 4>>));
  54         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_nth_element_q<L1, mp_size_t<5>, Q_less>, mp_at_c<L2, 5>>));
  55         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_nth_element_q<L1, mp_size_t<6>, Q_less>, mp_at_c<L2, 6>>));
  56     }
  57
  58     return boost::report_errors();
  59 }