code: def test_notexistent_url(self):
      # Uncomment the following line to preserve
      # test case output and other files (config, state, ect.)
      # in system temp folder.
      # self.set_delete_temp_folder(False)
  
      conn = self._get_connection()
      conn.request("GET", "/unicorn")
      res = conn.getresponse()
  
      self.assertEqual(404, res.status)
  
imports: from .None import integ_test_base
label_desc: Use image node_id 1 for calling the TestURL obj's underlying member method code with example usage: obj.test_notexistent_url() without return types