test/test_null_pointer.cpp

   1 // Copyright (c) 2003 Daniel Wallin and Arvid Norberg
   2
   3 // Permission is hereby granted, free of charge, to any person obtaining a
   4 // copy of this software and associated documentation files (the "Software"),
   5 // to deal in the Software without restriction, including without limitation
   6 // the rights to use, copy, modify, merge, publish, distribute, sublicense,
   7 // and/or sell copies of the Software, and to permit persons to whom the
   8 // Software is furnished to do so, subject to the following conditions:
   9
  10 // The above copyright notice and this permission notice shall be included
  11 // in all copies or substantial portions of the Software.
  12
  13 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF
  14 // ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
  15 // TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
  16 // PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
  17 // SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
  18 // ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  19 // ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  20 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE
  21 // OR OTHER DEALINGS IN THE SOFTWARE.
  22
  23 #include "test.hpp"
  24
  25 #include <luabind/luabind.hpp>
  26
  27 namespace
  28 {
  29
  30         struct A: counted_type<A>
  31         {
  32                 A* f() { return 0; }
  33         };
  34
  35         A* get_pointer()
  36         {
  37                 return 0;
  38         }
  39
  40 } // anonymous namespace
  41
  42
  43 void test_null_pointer()
  44 {
  45     COUNTER_GUARD(A);
  46
  47         lua_state L;
  48
  49         using namespace luabind;
  50
  51         module(L)
  52         [
  53                 class_<A>("A")
  54                         .def(constructor<>())
  55                         .def("f", &A::f),
  56
  57                 def("get_pointer", get_pointer)
  58         ];
  59
  60
  61         DOSTRING(L,
  62                 "e = get_pointer()\n"
  63                 "assert(e == nil)");
  64
  65         DOSTRING(L,
  66                 "a = A()\n"
  67                 "e = a:f()\n"
  68                 "assert(e == nil)");
  69 }