code: def test_ocr_single_word(self):
      texts = ["Zoology", "roku123456"]
      aug = OcrAug()
      for text in texts:
          augmented_data = aug.augment(text)
          augmented_text = augmented_data[0]
          self.assertNotEqual(text, augmented_text)
  
      self.assertTrue(len(texts) > 0)
  
file_path: nlpaug/test/augmenter/char/test_ocr.py
imports: import unittest, os
  from nlpaug.augmenter.char import OcrAug
label_desc: Use image node_id 1 for calling the TestOcr obj's underlying member method code with example usage: obj.test_ocr_single_word() without return types