def METHOD_NAME(self):
    """Attempt to update a content unit using HTTP PATCH.
    This HTTP method is not supported and a HTTP exception is expected.
    """
    attrs = {"name": "testing"}
    with self.assertRaises(AttributeError) as exc:
        self.cv_content_api.partial_update(self.content_unit["pulp_href"], attrs)
    msg = "object has no attribute 'partial_update'"
    self.assertIn(msg, exc.exception.args[0])