code: def test_update(self):
      for kw in "self", "dict", "other", "iterable":
          d = collections.UserDict()
          d.update(**{kw: 42})
          self.assertEqual(list(d.items()), [(kw, 42)])
      self.assertRaises(TypeError, collections.UserDict().update, 42)
      self.assertRaises(
          TypeError, collections.UserDict().update, {}, {}
      )
      self.assertRaises(TypeError, collections.UserDict.update)
  
file_path: cpython/Lib/test/test_userdict.py
imports: from test import mapping_tests, support
  import unittest
  import collections
label_desc: Use image node_id 3 for calling the UserDictTest obj's underlying member method code with example usage: obj.test_update() without return types