text: import pytest
  
  from epo_ops.middlewares.throttle.storages import Storage
  
  
  def test_storage_base_class_not_implemented():
      s = Storage()
      for m in (s.delay_for, s.update):
          with pytest.raises(NotImplementedError):
              m('something')
  
  
  if __name__ == '__main__':
      pytest.main()
  