def METHOD_NAME(self):
    scene = 'lt_chasm'
    self._env = thread_environment.ThreadEnvironment(
        lambda: suite_dmlab.load(
            scene=scene,
            gym_env_wrappers=[
                gym_wrappers.FrameGrayScale, gym_wrappers.FrameResize,
                gym_wrappers.FrameStack
            ],
            wrap_with_process=False))
    self.assertIsInstance(self._env, alf_environment.AlfEnvironment)
    self.assertEqual((4, 84, 84), self._env.observation_spec().shape)
    for _ in range(10):
        actions = self._env.action_spec().sample()
        self._env.step(actions)