added testcase

Author: wjakob

tests/test_smart_ptr.cpp

@@ -129,6 +129,18 @@ test_initializer smart_ptr([](py::module &m) {
     py::class_<MyObject1, ref<MyObject1>>(m, "MyObject1", obj)
         .def(py::init<int>());
 
+    m.def("test_object1_refcounting",
+        []() -> bool {
+            ref<MyObject1> o = new MyObject1(0);
+            bool good = o->getRefCount() == 1;
+            py::object o2 = py::cast(o, py::return_value_policy::reference);
+            // always request (partial) ownership for objects with intrusive
+            // reference counting even when using the 'reference' RVP
+            good &= o->getRefCount() == 2;
+            return good;
+        }
+    );
+
     m.def("make_object_1", &make_object_1);
     m.def("make_object_2", &make_object_2);
     m.def("make_myobject1_1", &make_myobject1_1);

tests/test_smart_ptr.py

@@ -116,6 +116,11 @@ def test_smart_ptr(capture):
     assert cstats.move_assignments == 0
 
 
+def test_smart_ptr_refcounting():
+    from pybind11_tests import test_object1_refcounting
+    assert test_object1_refcounting()
+
+
 def test_unique_nodelete():
     from pybind11_tests import MyObject4
     o = MyObject4(23)