code: def test_parse_formula():
      _do_parse_test(_parser_tests, [])
  
imports: from __future__ import print_function
  import tokenize
  import six
  from six.moves import cStringIO
  from patsy import PatsyError
  from patsy.origin import Origin
  from patsy.infix_parser import Token, Operator, infix_parse, ParseNode
  from patsy.tokens import python_tokenize, pretty_untokenize
  from patsy.util import PushbackAdapter
label_desc: Use image node_id 8 for calling a global function with example usage: test_parse_formula() without return types