Initial pointer adoption tests

Have instances actually dispose of their held C++ objects!


[SVN r12652]

test/test_pointer_adoption.cpp

@@ -0,0 +1,61 @@
+// Copyright David Abrahams 2002. Permission to copy, use,
+// modify, sell and distribute this software is granted provided this
+// copyright notice appears in all copies. This software is provided
+// "as is" without express or implied warranty, and with no claim as
+// to its suitability for any purpose.
+#include <boost/python/module.hpp>
+#include <boost/python/return_value_policy.hpp>
+#include <boost/python/manage_new_object.hpp>
+#include <boost/python/class.hpp>
+#include <boost/mpl/type_list.hpp>
+
+using namespace boost::python;
+using boost::mpl::type_list;
+
+int a_instances = 0;
+
+int num_a_instances() { return a_instances; }
+
+struct A
+{
+    A(std::string const& s)
+        : s(s)
+    {
+        ++a_instances;
+    }
+    
+    ~A()
+    {
+        --a_instances;
+    }
+
+    std::string content() const
+    {
+        return s;
+    }
+    
+    std::string s;
+};
+
+A* create(std::string const& s)
+{
+    return new A(s);
+}
+
+BOOST_PYTHON_MODULE_INIT(test_pointer_adoption_ext)
+{
+    boost::python::module("test_pointer_adoption_ext")
+        .def("num_a_instances", num_a_instances)
+
+        // Specify the manage_new_object return policy to take
+        // ownership of create's result
+        .def("create", create, return_value_policy<manage_new_object>())
+        
+        .add(
+            class_<A>()
+                .def("content", &A::content)
+            )
+        
+        ;
+}
+