ceph/src/boost/libs/type_erasure/test/test_dereference.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/mpl/vector.hpp>
  16
  17 #define BOOST_TEST_MAIN
  18 #include <boost/test/unit_test.hpp>
  19
  20 using namespace boost::type_erasure;
  21
  22 template<class T = _self>
  23 struct common : ::boost::mpl::vector<
  24     copy_constructible<T>,
  25     typeid_<T>
  26 > {};
  27
  28 BOOST_AUTO_TEST_CASE(test_basic)
  29 {
  30     typedef ::boost::mpl::vector<common<>, dereferenceable<int&> > test_concept;
  31     int i;
  32     any<test_concept> x(&i);
  33     BOOST_CHECK_EQUAL(&*x, &i);
  34 }
  35
  36 BOOST_AUTO_TEST_CASE(test_any_result)
  37 {
  38     typedef ::boost::mpl::vector<common<>, common<_a>, dereferenceable<_a&> > test_concept;
  39     typedef ::boost::mpl::map<
  40         ::boost::mpl::pair<_self, int*>,
  41         ::boost::mpl::pair<_a, int>
  42     > types;
  43     int i;
  44     any<test_concept> x(&i, make_binding<types>());
  45     any<test_concept, _a&> y(*x);
  46     BOOST_CHECK_EQUAL(any_cast<int*>(&y), &i);
  47 }
  48
  49 BOOST_AUTO_TEST_CASE(test_any_result_const)
  50 {
  51     typedef ::boost::mpl::vector<common<>, common<_a>, dereferenceable<const _a&> > test_concept;
  52     typedef ::boost::mpl::map<
  53         ::boost::mpl::pair<_self, const int*>,
  54         ::boost::mpl::pair<_a, int>
  55     > types;
  56     const int i = 0;
  57     any<test_concept> x(&i, make_binding<types>());
  58     any<test_concept, const _a&> y(*x);
  59     BOOST_CHECK_EQUAL(any_cast<const int*>(&y), &i);
  60 }