How to use the pyatv.convert.playstate function in pyatv

def test_regular_playstates(self):
        self.assertEqual(DeviceState.Idle,
                         convert.playstate(PLAY_STATE_IDLE))
        self.assertEqual(DeviceState.Loading,
                         convert.playstate(PLAY_STATE_LOADING))
        self.assertEqual(DeviceState.Stopped,
                         convert.playstate(PLAY_STATE_STOPPED))
        self.assertEqual(DeviceState.Paused,
                         convert.playstate(PLAY_STATE_PAUSED))
        self.assertEqual(DeviceState.Playing,
                         convert.playstate(PLAY_STATE_PLAYING))
        self.assertEqual(DeviceState.Seeking,
                         convert.playstate(PLAY_STATE_FORWARD))
        self.assertEqual(DeviceState.Seeking,
                         convert.playstate(PLAY_STATE_BACKWARD))

def test_regular_play_states(self):
        self.assertEqual(const.PLAY_STATE_LOADING,
                         convert.playstate(PLAY_STATE_LOADING))
        self.assertEqual(const.PLAY_STATE_PAUSED,
                         convert.playstate(PLAY_STATE_PAUSED))
        self.assertEqual(const.PLAY_STATE_PLAYING,
                         convert.playstate(PLAY_STATE_PLAYING))
        self.assertEqual(const.PLAY_STATE_FAST_FORWARD,
                         convert.playstate(PLAY_STATE_FORWARD))
        self.assertEqual(const.PLAY_STATE_FAST_BACKWARD,
                         convert.playstate(PLAY_STATE_BACKWARD))

def test_play_state_no_media(self):
        # This test should not really be here as "None" is in reality not a
        # valid value. But it is supported nonetheless because that makes
        # usage nicer. None means that the field is not included in a
        # server response, which matches the behavior of dmap.first.
        self.assertEqual(const.PLAY_STATE_NO_MEDIA,
                         convert.playstate(None))

def test_regular_playstates(self):
        self.assertEqual(DeviceState.Idle,
                         convert.playstate(PLAY_STATE_IDLE))
        self.assertEqual(DeviceState.Loading,
                         convert.playstate(PLAY_STATE_LOADING))
        self.assertEqual(DeviceState.Stopped,
                         convert.playstate(PLAY_STATE_STOPPED))
        self.assertEqual(DeviceState.Paused,
                         convert.playstate(PLAY_STATE_PAUSED))
        self.assertEqual(DeviceState.Playing,
                         convert.playstate(PLAY_STATE_PLAYING))
        self.assertEqual(DeviceState.Seeking,
                         convert.playstate(PLAY_STATE_FORWARD))
        self.assertEqual(DeviceState.Seeking,
                         convert.playstate(PLAY_STATE_BACKWARD))

def test_unknown_playstate_throws(self):
        with self.assertRaises(exceptions.UnknownPlayState):
            convert.playstate(99999)

def test_regular_play_states(self):
        self.assertEqual(const.PLAY_STATE_LOADING,
                         convert.playstate(PLAY_STATE_LOADING))
        self.assertEqual(const.PLAY_STATE_PAUSED,
                         convert.playstate(PLAY_STATE_PAUSED))
        self.assertEqual(const.PLAY_STATE_PLAYING,
                         convert.playstate(PLAY_STATE_PLAYING))
        self.assertEqual(const.PLAY_STATE_FAST_FORWARD,
                         convert.playstate(PLAY_STATE_FORWARD))
        self.assertEqual(const.PLAY_STATE_FAST_BACKWARD,
                         convert.playstate(PLAY_STATE_BACKWARD))

def play_state(self):
        """Current play state, e.g. playing or paused."""
        state = dmap.first(self.playstatus, 'cmst', 'caps')
        return convert.playstate(state)

def device_state(self):
        """Device state, e.g. playing or paused."""
        state = parser.first(self.playstatus, 'cmst', 'caps')
        return convert.playstate(state)