code: def test_empty(self):
      texts = ["", None, []]
  
      aug = naw.RandomWordAug()
  
      for text in texts:
          augmented_data = aug.augment(text)
          self.assertTrue(len(augmented_data) == 0)
  
file_path: nlpaug/test/augmenter/word/test_random_word.py
imports: import unittest
  import nlpaug.augmenter.word
label_desc: Use image node_id 8 for calling the TestRandom obj's underlying member method code with example usage: obj.test_empty() without return types