code: def test_unflattened_input(self):
      env = GymEnv(DummyBoxEnv(obs_dim=(2, 2)))
      gmb = GaussianMLPBaseline(env_spec=env.spec)
      env.reset()
      es = env.step(1)
      obs, rewards = es.observation, es.reward
      train_paths = [{"observations": [obs], "returns": [rewards]}]
      gmb.fit(train_paths)
      paths = {"observations": [obs]}
      prediction = gmb.predict(paths)
      assert np.allclose(0.0, prediction)
  
file_path: garage/tests/garage/tf/baselines/test_gaussian_mlp_baseline.py
imports: import pickle
  from unittest import mock
  import numpy
  import pytest
  import tensorflow
  from garage.envs import GymEnv
  from garage.tf.baselines import GaussianMLPBaseline
  from tests.fixtures import TfGraphTestCase
  from tests.fixtures.envs.dummy import DummyBoxEnv
label_desc: Use image node_id 5 for calling the TestGaussianMLPBaseline obj's underlying member method code with example usage: obj.test_unflattened_input() without return types