code: def test_all_singular_irregular(self):
      for singular_w in singular_irregular.values():
          assert_equals(
              singular_irregular[pluralize(singular_w)], singular_w
          )
  
file_path: TextBlob/tests/test_inflect.py
imports: from nose.tools import assert_equals, assert_true
  from unittest import TestCase
  from textblob.en.inflect import plural_categories, singular_ie, singular_irregular, singular_uncountable, singular_uninflected, singularize, pluralize
label_desc: Use image node_id 7 for calling the InflectTestCase obj's underlying member method code with example usage: obj.test_all_singular_irregular() without return types