def test_builtins_cast_return_none(): """Casters produced with PYBIND11_TYPE_CASTER() should convert nullptr to None""" import pybind11_tests as m assert m.return_none_string() is None assert m.return_none_char() is None assert m.return_none_bool() is None assert m.return_none_int() is None assert m.return_none_float() is None