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

   1
   2 // Copyright 2015, 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/list.hpp>
  11 #include <boost/core/lightweight_test_trait.hpp>
  12 #include <type_traits>
  13 #include <tuple>
  14
  15 int main()
  16 {
  17     using boost::mp11::mp_list;
  18     using boost::mp11::mp_clear;
  19
  20     using L1 = mp_list<int, void(), float[]>;
  21     BOOST_TEST_TRAIT_TRUE((std::is_same<mp_clear<L1>, mp_list<>>));
  22
  23     //
  24
  25     using L2 = std::tuple<int, char, float>;
  26     BOOST_TEST_TRAIT_TRUE((std::is_same<mp_clear<L2>, std::tuple<>>));
  27
  28     //
  29
  30     return boost::report_errors();
  31 }