code: def test_ascii_file_shelf(self):
      self.test_open_template(protocol=0)
  
imports: import unittest
  import dbm
  import shelve
  import pickle
  import os
  from test.support import os_helper
  from collections.abc import MutableMapping
  from test.test_dbm import dbm_iterator
  from test import mapping_tests
label_desc: Use image node_id 3 for calling the TestCase obj's underlying member method code with example usage: obj.test_ascii_file_shelf() without return types