ceph/src/boost/libs/range/test/adaptor_test/ref_unwrapped.cpp

   1 // Boost.Range library
   2 //
   3 //  Copyright Robin Eckert 2015. Use, modification and distribution is
   4 //  subject to the Boost Software License, Version 1.0. (See
   5 //  accompanying file LICENSE_1_0.txt or copy at
   6 //  http://www.boost.org/LICENSE_1_0.txt)
   7 //
   8 //
   9 // For more information, see http://www.boost.org/libs/range/
  10 //
  11 #include <boost/range/adaptor/ref_unwrapped.hpp>
  12
  13 #define BOOST_TEST_MAIN
  14
  15 #include <boost/test/test_tools.hpp>
  16 #include <boost/test/unit_test.hpp>
  17
  18 #include <vector>
  19
  20 #if !defined(BOOST_NO_CXX11_AUTO_DECLARATIONS) && !defined(BOOST_NO_CXX11_RANGE_BASED_FOR) && !defined(BOOST_NO_CXX11_UNIFIED_INITIALIZATION_SYNTAX)
  21
  22 namespace boost
  23 {
  24
  25     BOOST_AUTO_TEST_CASE(test_mutable)
  26     {
  27         int one = 1;
  28         int two = 2;
  29         int three = 3;
  30
  31         std::vector<std::reference_wrapper<int>> input_values{one, two, three};
  32
  33         const std::vector<int*> expected{&one, &two, &three};
  34         std::vector<int*> actual;
  35
  36         for (auto&& value : input_values | adaptors::ref_unwrapped)
  37         {
  38           actual.push_back(&value);
  39         }
  40
  41         BOOST_CHECK_EQUAL_COLLECTIONS(expected.begin(),
  42                                       expected.end(),
  43                                       actual.begin(),
  44                                       actual.end());
  45     }
  46
  47     BOOST_AUTO_TEST_CASE(test_const_range)
  48     {
  49         int one = 1;
  50         int two = 2;
  51         int three = 3;
  52
  53         const std::vector<std::reference_wrapper<int>> input_values{one, two, three};
  54
  55         const std::vector<int*> expected{&one, &two, &three};
  56         std::vector<int*> actual;
  57
  58         for (auto&& value : input_values | adaptors::ref_unwrapped)
  59         {
  60           actual.push_back(&value);
  61         }
  62
  63         BOOST_CHECK_EQUAL_COLLECTIONS(expected.begin(),
  64                                       expected.end(),
  65                                       actual.begin(),
  66                                       actual.end());
  67     }
  68
  69     BOOST_AUTO_TEST_CASE(test_const_reference)
  70     {
  71         const int one = 1;
  72         const int two = 2;
  73         const int three = 3;
  74
  75         const std::vector<std::reference_wrapper<const int>> input_values{one, two, three};
  76
  77         const std::vector<const int*> expected{&one, &two, &three};
  78         std::vector<const int*> actual;
  79
  80         for (auto&& value : input_values | adaptors::ref_unwrapped)
  81         {
  82           actual.push_back(&value);
  83         }
  84
  85         BOOST_CHECK_EQUAL_COLLECTIONS(expected.begin(),
  86                                       expected.end(),
  87                                       actual.begin(),
  88                                       actual.end());
  89     }
  90
  91
  92 }
  93
  94 #else
  95
  96 BOOST_AUTO_TEST_CASE(empty)
  97 {
  98   // C++11 only
  99 }
 100
 101 #endif