text: import ssz
  
  from eth2.beacon.types.forks import Fork
  
  
  def test_defaults(sample_fork_params):
      fork = Fork.create(**sample_fork_params)
      assert fork.previous_version == sample_fork_params["previous_version"]
      assert fork.current_version == sample_fork_params["current_version"]
      assert fork.epoch == sample_fork_params["epoch"]
      assert ssz.encode(fork)
  