ceph/src/boost/libs/bimap/test/test_mutant.cpp

   1 // Boost.Bimap
   2 //
   3 // Copyright (c) 2006-2007 Matias Capeletto
   4 //
   5 // Distributed under the Boost Software License, Version 1.0.
   6 // (See accompanying file LICENSE_1_0.txt or copy at
   7 // http://www.boost.org/LICENSE_1_0.txt)
   8
   9 //  VC++ 8.0 warns on usage of certain Standard Library and API functions that
  10 //  can be cause buffer overruns or other possible security issues if misused.
  11 //  See http://msdn.microsoft.com/msdnmag/issues/05/05/SafeCandC/default.aspx
  12 //  But the wording of the warning is misleading and unsettling, there are no
  13 //  portable alternative functions, and VC++ 8.0's own libraries use the
  14 //  functions in question. So turn off the warnings.
  15 #define _CRT_SECURE_NO_DEPRECATE
  16 #define _SCL_SECURE_NO_DEPRECATE
  17
  18 #include <boost/config.hpp>
  19
  20 // Boost.Test
  21 #include <boost/test/minimal.hpp>
  22
  23 // Boost.MPL
  24 #include <boost/mpl/list.hpp>
  25 #include <boost/type_traits/is_same.hpp>
  26
  27 // Boost.Bimap
  28 #include <boost/bimap/relation/detail/mutant.hpp>
  29
  30 using namespace boost::bimaps::relation::detail;
  31
  32 // The mutant idiom is standard if only POD types are used.
  33
  34 typedef double  type_a;
  35 typedef int     type_b;
  36
  37 const type_a value_a = 1.4;
  38 const type_b value_b = 3;
  39
  40 struct Data
  41 {
  42     type_a a;
  43     type_b b;
  44 };
  45
  46 struct StdPairView
  47 {
  48     typedef type_a first_type;
  49     typedef type_b second_type;
  50     type_a first;
  51     type_b second;
  52 };
  53
  54 struct ReverseStdPairView
  55 {
  56     typedef type_a second_type;
  57     typedef type_b first_type;
  58     type_a second;
  59     type_b first;
  60 };
  61
  62
  63 struct MutantData
  64 {
  65     typedef boost::mpl::list< StdPairView, ReverseStdPairView > mutant_views;
  66
  67     MutantData(type_a ap, type_b bp) : a(ap), b(bp) {}
  68     type_a a;
  69     type_b b;
  70 };
  71
  72
  73 void test_mutant_basic()
  74 {
  75
  76     // mutant test
  77     {
  78         MutantData m(value_a,value_b);
  79
  80         BOOST_CHECK( sizeof( MutantData ) == sizeof( StdPairView ) );
  81
  82         BOOST_CHECK( mutate<StdPairView>(m).first  == value_a );
  83         BOOST_CHECK( mutate<StdPairView>(m).second == value_b );
  84         BOOST_CHECK( mutate<ReverseStdPairView>(m).first  == value_b );
  85         BOOST_CHECK( mutate<ReverseStdPairView>(m).second == value_a );
  86
  87         ReverseStdPairView & rpair = mutate<ReverseStdPairView>(m);
  88         rpair.first = value_b;
  89         rpair.second = value_a;
  90
  91         BOOST_CHECK( mutate<StdPairView>(m).first  == value_a );
  92         BOOST_CHECK( mutate<StdPairView>(m).second == value_b );
  93
  94         BOOST_CHECK( &mutate<StdPairView>(m).first  == &m.a );
  95         BOOST_CHECK( &mutate<StdPairView>(m).second == &m.b );
  96     }
  97 }
  98
  99 int test_main( int, char* [] )
 100 {
 101     test_mutant_basic();
 102     return 0;
 103 }