libs/functional/factory/test/factory_with_std_allocator.cpp

   1 /*
   2 Copyright 2007 Tobias Schwinger
   3 Copyright 2017 Daniel James
   4
   5 Copyright 2019 Glen Joseph Fernandes
   6 (glenjofe@gmail.com)
   7
   8 Distributed under the Boost Software License, Version 1.0.
   9 (http://www.boost.org/LICENSE_1_0.txt)
  10 */
  11 #include <boost/functional/factory.hpp>
  12 #include <boost/core/lightweight_test.hpp>
  13 #include <boost/smart_ptr/shared_ptr.hpp>
  14 #include <memory>
  15
  16 class sum  {
  17 public:
  18     sum(int a, int b)
  19         : value_(a + b) { }
  20
  21     int get() const {
  22         return value_;
  23     }
  24
  25 private:
  26     int value_;
  27 };
  28
  29 int main()
  30 {
  31     int a = 1;
  32     int b = 2;
  33     {
  34         boost::shared_ptr<sum> s(boost::factory<boost::shared_ptr<sum>,
  35             std::allocator<char>,
  36             boost::factory_alloc_for_pointee_and_deleter>()(a, b));
  37         BOOST_TEST(s->get() == 3);
  38     }
  39     {
  40         boost::shared_ptr<sum> s(boost::factory<boost::shared_ptr<sum>,
  41             std::allocator<char>,
  42             boost::factory_passes_alloc_to_smart_pointer>()(a, b));
  43         BOOST_TEST(s->get() == 3);
  44     }
  45     return boost::report_errors();
  46 }