code: def setUp(self):
      self.engine = se.SearchEngine(
          self.root
      )  # None also seems to work
      self.dialog = sdb.SearchDialogBase(
          root=self.root, engine=self.engine
      )
  
imports: import unittest
  from test.test_support import requires
  from Tkinter import Tk, Toplevel, Frame
  from idlelib import SearchEngine
  from idlelib import SearchDialogBase
  from idlelib.idle_test.mock_idle import Func
label_desc: Use image node_id 3 for calling the SearchDialogBaseTest obj's underlying member method code with example usage: obj.setUp() without return types