code: def test_found(self):
      pat = (
          '""" !Changing this line will break Test_findfile.test_found!'
      )
      lines = self.report(pat)
      self.assertEqual(len(lines), 5)
      self.assertIn(pat, lines[0])
      self.assertIn("py: 1:", lines[1])  # line number 1
      self.assertIn("2", lines[3])  # hits found 2
      self.assertTrue(lines[4].startswith("(Hint:"))
  
imports: from idlelib import grep
  import unittest
  from test.support import captured_stdout
  from idlelib.idle_test.mock_tk import Var
  import os
  import re
label_desc: Use image node_id 3 for calling the Grep_itTest obj's underlying member method code with example usage: obj.test_found() without return types