code: def test_not_fitted(self):
      selector = FeatureSelector()
  
      X = pd.DataFrame()
  
      self.assertRaises(RuntimeError, selector.transform, X)
  
file_path: tsfresh/tests/units/transformers/test_feature_selector.py
imports: from builtins import range
  from unittest import TestCase
  import numpy
  import pandas
  from tsfresh.transformers.feature_selector import FeatureSelector
label_desc: Use image node_id 2 for calling the FeatureSelectorTestCase obj's underlying member method code with example usage: obj.test_not_fitted() without return types