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

   1
   2 //  Copyright 2015 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/core/lightweight_test_trait.hpp>
  14 #include <type_traits>
  15 #include <tuple>
  16 #include <utility>
  17
  18 struct X1 {};
  19 struct X2 {};
  20 struct X3 {};
  21
  22 int main()
  23 {
  24     using boost::mp11::mp_list;
  25     using boost::mp11::mp_contains;
  26     using boost::mp11::mp_true;
  27     using boost::mp11::mp_false;
  28
  29     {
  30         using L1 = mp_list<>;
  31
  32         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_contains<L1, void>, mp_false>));
  33
  34         using L2 = mp_list<X1, X2, X3, X2, X3, X3>;
  35
  36         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_contains<L2, void>, mp_false>));
  37         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_contains<L2, X1>, mp_true>));
  38         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_contains<L2, X2>, mp_true>));
  39         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_contains<L2, X3>, mp_true>));
  40     }
  41
  42     {
  43         using L3 = std::tuple<>;
  44
  45         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_contains<L3, void>, mp_false>));
  46
  47         using L4 = std::tuple<X1, X2, X3, X2, X3, X3>;
  48
  49         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_contains<L4, void>, mp_false>));
  50         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_contains<L4, X1>, mp_true>));
  51         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_contains<L4, X2>, mp_true>));
  52         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_contains<L4, X3>, mp_true>));
  53     }
  54
  55     {
  56         using L5 = std::pair<X1, X2>;
  57
  58         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_contains<L5, void>, mp_false>));
  59         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_contains<L5, X1>, mp_true>));
  60         BOOST_TEST_TRAIT_TRUE((std::is_same<mp_contains<L5, X2>, mp_true>));
  61     }
  62
  63     return boost::report_errors();
  64 }