582c3c56ffc3b60f0b371c77aec170a6b7aa7210,tests/garage/envs/test_stack_frames_env.py,TestStackFrames,setUp,#TestStackFrames#,14

Before Change

    @overrides
    def setUp(self):
        self.shape = (50, 50)
        self.env = mock.Mock()
        self.env.observation_space = Box(
            low=0, high=255, shape=self.shape, dtype=np.uint8)
        self.env.reset.return_value = np.zeros(self.shape)
        self.env.step.side_effect = self._step

        self._n_frames = 4
        self.env_s = StackFrames(self.env, n_frames=self._n_frames)

        self.obs = self.env.reset()
        self.obs_s = self.env_s.reset()
        self.frame_width = self.env.observation_space.shape[0]
        self.frame_height = self.env.observation_space.shape[1]

After Change

        self.env_s = TfEnv(
            StackFrames(
                DummyDiscrete2DEnv(random=False), n_frames=self.n_frames))
        self.width, self.height = self.env.observation_space.shape

    def test_stack_frames_invalid_environment_type(self):
        with self.assertRaises(ValueError):

Instances