Add test to ensure that local typemap is local

Author: jagerman

tests/pybind11_local_bindings.cpp

@@ -50,4 +50,7 @@ PYBIND11_MODULE(pybind11_local_bindings, m) {
     m.def("register_nonlocal_stl2", [m]() {
         py::bind_map<std::unordered_map<std::string, NonLocal2>>(m, "NonLocalMap", py::module_local(false));
     });
+
+    // test_internal_locals_differ
+    m.def("local_cpp_types_addr", []() { return (uintptr_t) &py::detail::registered_local_types_cpp(); });
 }

tests/test_local_bindings.cpp

@@ -55,4 +55,7 @@ TEST_SUBMODULE(local_bindings, m) {
     bind_local<NonLocal2, 10>(m, "NonLocal2");
     py::bind_vector<std::vector<NonLocal2>>(m, "NonLocalVec", py::module_local(false));
     py::bind_map<std::unordered_map<std::string, NonLocal2>>(m, "NonLocalMap", py::module_local(false));
+
+    // test_internal_locals_differ
+    m.def("local_cpp_types_addr", []() { return (uintptr_t) &py::detail::registered_local_types_cpp(); });
 }

tests/test_local_bindings.py

@@ -97,3 +97,9 @@ def test_stl_bind_global():
     with pytest.raises(RuntimeError) as excinfo:
         m2.register_nonlocal_stl2()
     assert str(excinfo.value) == 'generic_type: type "NonLocalMap" is already registered!'
+
+
+def test_internal_locals_differ():
+    """Makes sure the internal local type map differs across the two modules"""
+    import pybind11_local_bindings as m2
+    assert m1.local_cpp_types_addr() != m2.local_cpp_types_addr()