code: def test_all_combination_error(self):
      texts = [
          "Dear NLP, text, texttt Thanks. best regards NLPAug",
      ]
      reserved_tokens = [
          [
              "Best Regards",
              "Best Regards2222",
              "Best Regards3333",
              "Best Regards4444",
          ],
          ["thx", "Thanks", "thank you"],
          ["Dear", "Hi", "Hello"],
      ]
  
      aug = naw.ReservedAug(
          aug_p=0.5,
          generate_all_combinations=True,
          reserved_tokens=reserved_tokens,
          case_sensitive=False,
      )
  
      with self.assertRaises(AssertionError) as error:
          aug.augment(texts)
      self.assertTrue(
          "Augmentation probability has to be 1 to genenerate all combinations. Set aug_p=1 in constructor."
          in str(error.exception)
      )
  
file_path: nlpaug/test/augmenter/word/test_reserved.py
imports: import unittest
  import nlpaug.augmenter.word
label_desc: Use image node_id 7 for calling the TestReserved obj's underlying member method code with example usage: obj.test_all_combination_error() without return types