code: def test_index(self):
      self.assertCountEqual(self.data.index, self.classes.index)
  
file_path: tsfresh/tests/integrations/examples/test_har_dataset.py
imports: import shutil
  import tempfile
  from unittest import TestCase
  from pandas import DataFrame, Series
  from tsfresh.examples.har_dataset import download_har_dataset, load_har_classes, load_har_dataset
label_desc: Use image node_id 4 for calling the HumanActivityTestCase obj's underlying member method code with example usage: obj.test_index() without return types