code: def test_gettext(self):
      self.assertEqual(self.mbt.GetText(), fname)
  
imports: from idlelib import browser
  from test.support import requires
  import unittest
  from unittest import mock
  from idlelib.idle_test.mock_idle import Func
  from idlelib.util import py_extensions
  from collections import deque
  import os.path
  import pyclbr
  from tkinter import Tk
  from idlelib.tree import TreeNode
label_desc: Use image node_id 3 for calling the ModuleBrowserTreeItemTest obj's underlying member method code with example usage: obj.test_gettext() without return types