code: def test_nothing_relevant(self):
      selector = FeatureSelector()
  
      y = pd.Series(np.random.binomial(1, 0.5, 1000))
      X = pd.DataFrame(index=list(range(1000)))
  
      X["irr1"] = np.random.normal(0, 1, 1000)
      X["irr2"] = np.random.normal(2, 1, 1000)
  
      selector.fit(X, y)
  
      transformed_X = selector.transform(X.copy())
  
      self.assertEqual(list(transformed_X.columns), [])
      self.assertEqual(list(transformed_X.index), list(X.index))
  
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 4 for calling the FeatureSelectorTestCase obj's underlying member method code with example usage: obj.test_nothing_relevant() without return types