code: def test_can_sim(env_type):
      env = env_type()
      task = env.sample_tasks(1)[0]
      env.set_task(task)
      for _ in range(3):
          env.step(env.action_space.sample())
  
imports: import pickle
  import numpy
  import pytest
  from garage.envs.mujoco.half_cheetah_dir_env import HalfCheetahDirEnv
  from garage.envs.mujoco.half_cheetah_vel_env import HalfCheetahVelEnv
label_desc: Use image node_id 1 for calling a global function with example usage: test_can_sim(env_type) without return types