code: def test_default_rules(self):
      tok = BaseTokenizer(pre_rules=DEFAULT_PRE_RULES)
      token_list = tok.tokenize("<t>a</t> B |{ C ]?&$  d123 E")
      self.assertListEqual(token_list, ["a", "b", "c", "d", "e"])
  
imports: import unittest
  from collections import defaultdict
  import numpy
  import numpy.testing
  from cornac.data import TextModality, ReviewModality
  from cornac.data.text import SPECIAL_TOKENS, DEFAULT_PRE_RULES, BaseTokenizer, Vocabulary, CountVectorizer, TfidfVectorizer
label_desc: Use image node_id 5 for calling the TestBaseTokenizer obj's underlying member method code with example usage: obj.test_default_rules() without return types