code: def test_no_version():
      import tslumen
  
      with mock.patch(
          "pkg_resources.get_distribution", autospec=True
      ) as ver:
          ver.side_effect = lambda *args, **kwargs: (
              _ for _ in ()
          ).throw(DistributionNotFound())
          tslumen = reload(tslumen)
          assert tslumen.__version__ == ""
  
imports: import mock
  from pkg_resources import DistributionNotFound
  from importlib import reload
label_desc: Use image node_id 2 for calling a global function with example usage: test_no_version() without return types