code: def test_no_file(self) -> None:
      with pytest.raises(ValueError) as e:
          bsa.AuthModule("junkjunkjunk")
          assert str(e).startswith("no file exists at module_path:")
  
imports: from __future__ import annotations
  import pytest
  from types import ModuleType
  from tornado.web import RequestHandler
  from tests.support.util.api import verify_all
  from tests.support.util.filesystem import with_file_contents, with_file_contents_async
  import bokeh.server.auth_provider
label_desc: Use image node_id 1 for calling the TestAuthModule_validation obj's underlying member method code with example usage: obj.test_no_file() without return types