code: def test_invalid_inferred_batch_size(batch_data):
      with pytest.raises(ValueError, match="rewards is not of type"):
          batch_data["rewards"] = []
          s = TimeStepBatch(**batch_data)
          del s
  
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 31 for calling a global function with example usage: test_invalid_inferred_batch_size(batch_data) without return types