ceph/src/boost/libs/mp11/test/mp_identity.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/utility.hpp>
  11 #include <boost/core/lightweight_test_trait.hpp>
  12 #include <type_traits>
  13
  14 struct X {};
  15
  16 int main()
  17 {
  18     using boost::mp11::mp_identity;
  19
  20     BOOST_TEST_TRAIT_TRUE((std::is_same<mp_identity<void const volatile>::type, void const volatile>));
  21     BOOST_TEST_TRAIT_TRUE((std::is_same<mp_identity<void()>::type, void()>));
  22     BOOST_TEST_TRAIT_TRUE((std::is_same<mp_identity<int const[]>::type, int const[]>));
  23     BOOST_TEST_TRAIT_TRUE((std::is_same<mp_identity<X>::type, X>));
  24
  25     using boost::mp11::mp_identity_t;
  26
  27     BOOST_TEST_TRAIT_TRUE((std::is_same<mp_identity_t<void const volatile>, void const volatile>));
  28     BOOST_TEST_TRAIT_TRUE((std::is_same<mp_identity_t<void()>, void()>));
  29     BOOST_TEST_TRAIT_TRUE((std::is_same<mp_identity_t<int const[]>, int const[]>));
  30     BOOST_TEST_TRAIT_TRUE((std::is_same<mp_identity_t<X>, X>));
  31
  32     return boost::report_errors();
  33 }