def test_ident_writer_empty(self):
    message = ''
    actual = _IdentWriter._write(message)
    self.assertIsInstance(actual, _OutputMessage)
    self.assertEqual('', actual._value)
def test_ident_writer_empty(self):
    message = 
    actual = _IdentWriter._write(message)
    self.assertIsInstance(actual, _OutputMessage)
    self.assertEqual(, actual._value)