class_docstr: Test default title.
class_docstr_tok: ["Test","default","title","."]
docstr: Test about dialog title
docstr_tok: ["Test","about","dialog","title"]
code: def test_dialog_title(self):
      """Test about dialog title"""
      self.assertEqual(
          self.dialog.title(),
          f"About IDLE {python_version()}" f" ({help_about.bits} bit)",
      )
  
imports: from idlelib import help_about
  import unittest
  from test.support import requires, findfile
  from tkinter import Tk, TclError
  from idlelib.idle_test.mock_idle import Func
  from idlelib.idle_test.mock_tk import Mbox_func
  from idlelib import textview
  import os.path
  from platform import python_version
label_desc: Use image node_id 3 for calling the DefaultTitleTest obj's underlying member method code with example usage: obj.test_dialog_title() without return types