class_docstr: Test History.fetch with wrapped tk.Text.
      
class_docstr_tok: ["Test","History.fetch","with","wrapped","tk.Text","."]
code: def tearDownClass(cls):
      cls.root.destroy()
      del cls.root
  
imports: import unittest
  from test.test_support import requires
  import Tkinter
  from Tkinter import Text
  from idlelib.idle_test.mock_tk import Text
  from idlelib.IdleHistory import History
  from idlelib.configHandler import idleConf
label_desc: Use image node_id 3 for calling the FetchTest obj's underlying member method code with example usage: obj.tearDownClass(cls) without return types