class_docstr: The purpose of these tests is to ensure the difflib wrappers works.
  
  It is not the goal of these tests to exhaustively test difflib functionality.
class_docstr_tok: ["The","purpose","of","these","tests","is","to","ensure","the","difflib","wrappers","works",".","It","is","not","the","goal","of","these","tests","to","exhaustively","test","difflib","functionality","."]
code: def testSetUp(self):
      self.assertEqual(self.diff.fromlines, ["test\n", "test1\n"])
      self.assertEqual(
          self.diff.tolines, ["test\n", "test2\n", "extraline\n"]
      )
  
file_path: python-fire/examples/diff/diff_test.py
imports: import tempfile
  from fire import testutils
  from examples.diff import diff
  from examples.diff import difffull
label_desc: Use image node_id 2 for calling the DiffTest obj's underlying member method code with example usage: obj.testSetUp() without return types