':py:obj:`PKCS7Type.type_is_enveloped` raises :py:obj:`TypeError` if called with any
arguments.'

def test_type_is_enveloped_wrong_args(self):

    pkcs7 = load_pkcs7_data(FILETYPE_PEM, pkcs7Data)
    self.assertRaises(TypeError, pkcs7.type_is_enveloped, None)
