code: def test_delete(self):
      self.text.insert("insert", "foo")
      self.text.delete("1.0", "1.2")
      self.assertEqual(self.text.get("1.0", END), "o\n")
      self.assertTupleEqual(
          self.filter_one.delete_called_with, ("1.0", "1.2")
      )
  
imports: from idlelib.percolator import Percolator, Delegator
  import unittest
  from test.support import requires
  from tkinter import Text, Tk, END
label_desc: Use image node_id 12 for calling the PercolatorTest obj's underlying member method code with example usage: obj.test_delete() without return types