code: def test_google_session_ctor_no_arg():
      session = GSSession()
      assert not session._creds
  
imports: from unittest import mock
  import pytest
  from fiona.session import DummySession, AWSSession, Session, OSSSession, GSSession, SwiftSession, AzureSession
label_desc: Use image node_id 22 for calling a global function with example usage: test_google_session_ctor_no_arg() without return types