libs/smart_ptr/test/make_shared_array_esft_test.cpp

   1 /*
   2 Copyright 2012-2015 Glen Joseph Fernandes
   3 (glenjofe@gmail.com)
   4
   5 Distributed under the Boost Software License, Version 1.0.
   6 (http://www.boost.org/LICENSE_1_0.txt)
   7 */
   8 #include <boost/core/lightweight_test.hpp>
   9 #include <boost/smart_ptr/enable_shared_from_this.hpp>
  10 #include <boost/smart_ptr/make_shared.hpp>
  11
  12 class type
  13     : public boost::enable_shared_from_this<type> {
  14 public:
  15     static unsigned instances;
  16
  17     type() {
  18         ++instances;
  19     }
  20
  21     ~type() {
  22         --instances;
  23     }
  24
  25 private:
  26     type(const type&);
  27     type& operator=(const type&);
  28 };
  29
  30 unsigned type::instances = 0;
  31
  32 int main()
  33 {
  34     BOOST_TEST(type::instances == 0);
  35     {
  36         boost::shared_ptr<type[]> result =
  37             boost::make_shared<type[]>(3);
  38         try {
  39             result[0].shared_from_this();
  40             BOOST_ERROR("shared_from_this did not throw");
  41         } catch (...) {
  42             BOOST_TEST(type::instances == 3);
  43         }
  44     }
  45     BOOST_TEST(type::instances == 0);
  46     {
  47         boost::shared_ptr<type[3]> result =
  48             boost::make_shared_noinit<type[3]>();
  49         try {
  50             result[0].shared_from_this();
  51             BOOST_ERROR("shared_from_this did not throw");
  52         } catch (...) {
  53             BOOST_TEST(type::instances == 3);
  54         }
  55     }
  56     return boost::report_errors();
  57 }