code: def test_decode_nonascii_str(self):
      decode_funcs = (
          base64.b64decode,
          base64.standard_b64decode,
          base64.urlsafe_b64decode,
          base64.b32decode,
          base64.b16decode,
          base64.b85decode,
          base64.a85decode,
      )
      for f in decode_funcs:
          self.assertRaises(ValueError, f, "with non-ascii \xcb")
  
imports: import unittest
  import base64
  import binascii
  import os
  from array import array
  from test.support import os_helper
  from test.support import script_helper
label_desc: Use image node_id 29 for calling the BaseXYTestCase obj's underlying member method code with example usage: obj.test_decode_nonascii_str() without return types