ceph/src/boost/libs/type_erasure/test/test_increment.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/tuple.hpp>
  13 #include <boost/type_erasure/builtin.hpp>
  14 #include <boost/type_erasure/operators.hpp>
  15 #include <boost/type_erasure/any_cast.hpp>
  16 #include <boost/mpl/vector.hpp>
  17
  18 #define BOOST_TEST_MAIN
  19 #include <boost/test/unit_test.hpp>
  20
  21 using namespace boost::type_erasure;
  22
  23 template<class T = _self>
  24 struct common : ::boost::mpl::vector<
  25     destructible<T>,
  26     copy_constructible<T>,
  27     typeid_<T>
  28 > {};
  29
  30 BOOST_AUTO_TEST_CASE(test_value)
  31 {
  32     typedef ::boost::mpl::vector<common<>, incrementable<> > test_concept;
  33     any<test_concept> x(1);
  34     ++x;
  35     BOOST_CHECK_EQUAL(any_cast<int>(x), 2);
  36     any<test_concept> y(x++);
  37     BOOST_CHECK_EQUAL(any_cast<int>(x), 3);
  38     BOOST_CHECK_EQUAL(any_cast<int>(y), 2);
  39 }
  40
  41 BOOST_AUTO_TEST_CASE(test_reference)
  42 {
  43     typedef ::boost::mpl::vector<common<>, incrementable<> > test_concept;
  44     int i = 1;
  45     any<test_concept, _self&> x(i);
  46     ++x;
  47     BOOST_CHECK_EQUAL(i, 2);
  48     any<test_concept> y(x++);
  49     BOOST_CHECK_EQUAL(i, 3);
  50     BOOST_CHECK_EQUAL(any_cast<int>(y), 2);
  51 }