def test_old_style_base58_keypair(self):
     seed = 'sfjCwvnEU9HuTDtJB8f8sn4Z4fLMT7p3DiJQvCTHf1pJ1JYxeQP'
     address = 'gHAXa8zgoJJ4cyJbrdt6LxuwJaU3oTqouv'
     kp = Keypair.from_base58_seed(seed)
     assert kp.to_old_address() == address
     assert kp.to_old_seed() == seed