text: import unittest
  import os
  from dotenv import load_dotenv
  
  import nlpaug.augmenter.sentence as nas
  from nlpaug.util import Action, Doc
  
  
  class TestSentence(unittest.TestCase):
      @classmethod
      def setUpClass(cls):
          env_config_path = os.path.abspath(
              os.path.join(os.path.dirname(__file__), "..", "..", "..", ".env")
          )
          load_dotenv(env_config_path)
  
          cls.model_paths = ["xlnet-base-cased", "gpt2", "distilgpt2"]
  
          cls.text = "The quick brown fox jumps over the lazy dog."
  