ceph/src/boost/libs/type_erasure/test/test_deduced.cpp

   1 // Boost.TypeErasure library
   2 //
   3 // Copyright 2011 Steven Watanabe
   4 //
   5 // Distributed under the Boost Software License Version 1.0. (See
   6 // accompanying file LICENSE_1_0.txt or copy at
   7 // http://www.boost.org/LICENSE_1_0.txt)
   8 //
   9 // $Id$
  10
  11 #include <boost/type_erasure/any.hpp>
  12 #include <boost/type_erasure/builtin.hpp>
  13 #include <boost/type_erasure/operators.hpp>
  14 #include <boost/type_erasure/any_cast.hpp>
  15 #include <boost/type_erasure/deduced.hpp>
  16 #include <boost/mpl/vector.hpp>
  17 #include <boost/mpl/assert.hpp>
  18 #include <boost/type_traits/remove_pointer.hpp>
  19 #include <boost/type_traits/is_same.hpp>
  20
  21 #define BOOST_TEST_MAIN
  22 #include <boost/test/unit_test.hpp>
  23
  24 using namespace boost::type_erasure;
  25
  26 template<class T = _self>
  27 struct common : ::boost::mpl::vector<
  28     copy_constructible<T>,
  29     typeid_<T>
  30 > {};
  31
  32 BOOST_AUTO_TEST_CASE(test_deduce_dereference)
  33 {
  34     typedef ::boost::mpl::vector<
  35         copy_constructible<>,
  36         typeid_<deduced<boost::remove_pointer<_self> >::type>,
  37         dereferenceable<deduced<boost::remove_pointer<_self> >&>
  38     > test_concept;
  39     int i;
  40     any<test_concept> x(&i);
  41     any<test_concept, deduced<boost::remove_pointer<_self> >&> y(*x);
  42     BOOST_CHECK_EQUAL(&any_cast<int&>(y), &i);
  43 }
  44
  45 BOOST_MPL_ASSERT((
  46     boost::is_same<
  47         deduced<boost::remove_pointer<_self> >::type,
  48         deduced<boost::remove_pointer<_self> > >));
  49
  50 BOOST_MPL_ASSERT((
  51     boost::is_same<deduced<boost::remove_pointer<int*> >::type, int >));