def test_tf_worker_without_default_session(self):
tf_worker = TFWorkerWrapper()
worker = DefaultWorker(seed=1, max_episode_length=100, worker_number=1)
worker.update_env(DummyBoxEnv())
tf_worker._inner_worker = worker
tf_worker.worker_init()
assert tf_worker._sess == tf.compat.v1.get_default_session()
tf_worker.shutdown()
assert tf_worker._sess._closed