ceph/src/boost/libs/optional/test/optional_test_tc_base.cpp

   1 // Copyright (C) 2014 Andrzej Krzemienski.
   2 //
   3 // Use, modification, and distribution is subject to the Boost Software
   4 // License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
   5 // http://www.boost.org/LICENSE_1_0.txt)
   6 //
   7 // See http://www.boost.org/lib/optional for documentation.
   8 //
   9 // You are welcome to contact the author at:
  10 //  akrzemi1@gmail.com
  11
  12 #include "boost/optional/optional.hpp"
  13
  14 #ifdef __BORLANDC__
  15 #pragma hdrstop
  16 #endif
  17
  18 #include "boost/core/lightweight_test.hpp"
  19
  20 #if defined(BOOST_NO_CXX11_DELETED_FUNCTIONS)
  21
  22 int main()
  23 {
  24 }
  25
  26 #else
  27
  28 #include <utility>
  29
  30 struct NotDefaultConstructible
  31 {
  32         NotDefaultConstructible() = delete;
  33 };
  34
  35 void test_tc_base()
  36 {
  37   boost::optional<NotDefaultConstructible> o;
  38
  39   BOOST_TEST(boost::none == o);
  40 }
  41
  42 struct S
  43 {
  44
  45 };
  46
  47 template<class T>
  48 struct W
  49 {
  50         T& t_;
  51
  52         template<class... Args>
  53         W(Args&&... args)
  54                 : t_(std::forward<Args>(args)...)
  55         {
  56         }
  57 };
  58
  59 void test_value_init()
  60 {
  61         {
  62                 S s;
  63                 W<S> w{s};
  64         }
  65         boost::optional<W<S&> > o;
  66         BOOST_TEST(boost::none == o);
  67 }
  68
  69 int main()
  70 {
  71   test_tc_base();
  72   test_value_init();
  73   return boost::report_errors();
  74 }
  75
  76 #endif