code: def test_setdelegate(self):
      # Called in setUp when filter is attached to percolator.
      color = self.color
      self.assertIsInstance(color.delegate, colorizer.Delegator)
      # It is too late to mock notify_range, so test side effect.
      self.assertEqual(
          self.root.tk.call("after", "info", color.after_id)[1], "timer"
      )
  
imports: from idlelib import colorizer
  from test.support import requires
  import unittest
  from unittest import mock
  from idlelib.idle_test.tkinter_testing_utils import run_in_tk_mainloop
  from functools import partial
  import textwrap
  from tkinter import Tk, Text
  from idlelib import config
  from idlelib.percolator import Percolator
label_desc: Use image node_id 5 for calling the ColorDelegatorTest obj's underlying member method code with example usage: obj.test_setdelegate() without return types