code: def test_dispatch_intercept(self):
      self.func.__init__(True)
      self.assertTrue(self.redir.dispatch("insert", False))
      self.assertFalse(self.func.args[0])
  
imports: from test.test_support import requires
  import unittest
  from idlelib.idle_test.mock_idle import Func
  from Tkinter import Tk, Text, TclError
  from idlelib.WidgetRedirector import WidgetRedirector
label_desc: Use image node_id 10 for calling the WidgetRedirectorTest obj's underlying member method code with example usage: obj.test_dispatch_intercept() without return types