old_contents: # Lint as: python3
  """These tests ensure correctness for the helper functions in amaranth_lib."""
  
  import unittest
  
  
  class TestAmaranthHelpers(unittest.TestCase):
  
    def test_load_calorie_data(self):
      raise NotImplementedError
  
    def test_clean_data(self):
      raise NotImplementedError
  
    def test_add_calorie_labels(self):
      raise NotImplementedError
  
    def test_num_unique_words(self):
      raise NotImplementedError
  
    def test_max_sequence_length(self):
      raise NotImplementedError
  
    def test_add_input_labels(self):
      raise NotImplementedError
  
  
  if __name__ == '__main__':
    unittest.main()
  
new_contents: # Lint as: python3
  """These tests ensure correctness for the helper functions in amaranth_lib."""
  
  import unittest
  
  
  class TestAmaranthHelpers(unittest.TestCase):
  
    def test_combine_dataframes(self):
      raise NotImplementedError
  
    def test_get_calorie_data(self):
      raise NotImplementedError
  
    def test_clean_data(self):
      raise NotImplementedError
  
    def test_add_calorie_labels(self):
      raise NotImplementedError
  
    def test_num_unique_words(self):
      raise NotImplementedError
  
    def test_max_sequence_length(self):
      raise NotImplementedError
  
    def test_add_input_labels(self):
      raise NotImplementedError
  
  
  if __name__ == '__main__':
    unittest.main()
  
subject: Update testing stubs with helper lib changes