code: def test_unfound(self):
      pat = "xyz*" * 7
      lines = self.report(pat)
      self.assertEqual(len(lines), 2)
      self.assertIn(pat, lines[0])
      self.assertEqual(lines[1], "No hits.")
  
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 2 for calling the Grep_itTest obj's underlying member method code with example usage: obj.test_unfound() without return types