code: def test_open_close(self):
      def args(self):
          self.assertEqual(self.tip.args, ("1.1", "1.end"))
  
      self.open_close(args)
  
imports: from idlelib import calltip
  import unittest
  from unittest.mock import Mock
  import textwrap
  import types
  import re
  from idlelib.idle_test.mock_tk import Text
  from test.support import MISSING_C_DOCSTRINGS
label_desc: Use image node_id 4 for calling the CalltipTest obj's underlying member method code with example usage: obj.test_open_close() without return types