code: def test_min_char(self):
      text = "He eats apple"
      augs = [
          nac.RandomCharAug(min_char=5),
          nac.KeyboardAug(min_char=5),
          nac.OcrAug(min_char=5),
      ]
  
      for aug in augs:
          augmented = False
          for i in range(10):
              augmented_data = aug.augment(text)
              augmented_text = augmented_data[0]
              if "apple" not in augmented_text:
                  augmented = True
                  break
  
          self.assertTrue(augmented)
  
file_path: nlpaug/test/augmenter/char/test_char.py
imports: import unittest
  import nlpaug.augmenter.char
  import nlpaug.util.text.tokenizer
  from nlpaug.util import Action
label_desc: Use image node_id 8 for calling the TestCharacter obj's underlying member method code with example usage: obj.test_min_char() without return types