code: def test_last_obs_batch_mismatch_eps(eps_data):
      with pytest.raises(
          ValueError, match="last_observations has batch size 7"
      ):
          eps_data["last_observations"] = eps_data["last_observations"][
              :-1
          ]
          t = EpisodeBatch(**eps_data)
          del t
  
imports: import akro
  import gym.spaces
  import numpy
  import pytest
  from garage import EnvSpec, EnvStep, EpisodeBatch, StepType, TimeStep, TimeStepBatch
label_desc: Use image node_id 8 for calling a global function with example usage: test_last_obs_batch_mismatch_eps(eps_data) without return types