code: def test_change_case(self) -> None:
      augmented_words = txtaugs.change_case(
          self.texts[0], cadence=3.0, case="upper"
      )
      self.assertTrue(
          augmented_words[0]
          == "THE quick brown 'FOX' couldn't jump OVER the green, GRASSY hill.",
      )
  
imports: import random
  import unittest
  from augly import text
  from augly.utils import FUN_FONTS_GREEK_PATH
label_desc: Use image node_id 4 for calling the FunctionalTextUnitTest obj's underlying member method code with example usage: obj.test_change_case() without return types