def test_nonTuple(self):
        """
        L{error.getConnectError} converts to a L{error.ConnectError} given
        an argument that cannot be unpacked.
        """
        e = Exception()
        result = error.getConnectError(e)
        self.assertCorrectException(None, e, result, error.ConnectError)

        L{error.getConnectError} converts to a L{error.ConnectError} given
        an argument that cannot be unpacked.
        
stackoverflow/venv/lib/python3.6/site-packages/twisted/test/test_error.py