code: def test_replace_fun_fonts(self) -> None:
      augmented_fun_fonts_word = txtaugs.replace_fun_fonts(
          self.texts,
          granularity="word",
          aug_p=0.3,
          vary_fonts=False,
          n=1,
      )
      self.assertTrue(
          augmented_fun_fonts_word[0]
          == "The 𝙦𝙪𝙞𝙘𝙠 brown '𝙛𝙤𝙭' 𝙘𝙤𝙪𝙡𝙙𝙣'𝙩 jump over the green, 𝙜𝙧𝙖𝙨𝙨𝙮 hill."
      )
      augmented_fun_fonts_char = txtaugs.replace_fun_fonts(
          self.texts,
          granularity="char",
          aug_p=0.3,
          vary_fonts=True,
          n=1,
      )
      self.assertTrue(
          augmented_fun_fonts_char[0]
          == "T̷he̳ 𝒒uiᴄk 𝙗r𝓸wn 'fo̲x' coul͎dn't jump over t̶h̷e green, 𝑔ra͎ss̳𝒚 ʜill."
      )
      augmented_fun_fonts_all = txtaugs.replace_fun_fonts(
          self.texts,
          granularity="all",
          aug_p=1.0,
          vary_fonts=False,
          n=1,
      )
      self.assertTrue(
          augmented_fun_fonts_all[0]
          == "𝕋𝕙𝕖 𝕢𝕦𝕚𝕔𝕜 𝕓𝕣𝕠𝕨𝕟 '𝕗𝕠𝕩' 𝕔𝕠𝕦𝕝𝕕𝕟'𝕥 𝕛𝕦𝕞𝕡 𝕠𝕧𝕖𝕣 𝕥𝕙𝕖 𝕘𝕣𝕖𝕖𝕟, 𝕘𝕣𝕒𝕤𝕤𝕪 𝕙𝕚𝕝𝕝."
      )
      augmented_fun_fonts_word_targetted = txtaugs.replace_fun_fonts(
          self.texts,
          granularity="word",
          aug_p=0.3,
          vary_fonts=True,
          n=1,
          priority_words=self.priority_words,
      )
      self.assertTrue(
          augmented_fun_fonts_word_targetted[0]
          == "T͓̽h͓̽e͓̽ quick brown 'fox' couldn't jump over the 𝘨𝘳𝘦𝘦𝘯, g̳r̳a̳s̳s̳y̳ h̴i̴l̴l̴."
      )
      augmented_fun_fonts_greek = txtaugs.replace_fun_fonts(
          [
              "Η γρήγορη καφέ αλεπού δεν μπορούσε να πηδήξει πάνω από τον καταπράσινο λόφο."
          ],
          granularity="word",
          aug_p=0.3,
          vary_fonts=True,
          fonts_path=FUN_FONTS_GREEK_PATH,
          n=1.0,
      )
      self.assertTrue(
          augmented_fun_fonts_greek[0]
          == "𝝜 γρήγορη καφέ αλεπού 𝛿𝜀𝜈 μπορούσε να πηδήξει πάνω από 𝞽𝞸𝞶 𝝹𝝰𝞃𝝰𝝿𝞀ά𝞂𝝸𝝼𝝾 λόφο."
      )
  
imports: import random
  import unittest
  from augly import text
  from augly.utils import FUN_FONTS_GREEK_PATH
label_desc: Use image node_id 13 for calling the FunctionalTextUnitTest obj's underlying member method code with example usage: obj.test_replace_fun_fonts() without return types