def METHOD_NAME(self):
    self.dps[PRESET_DPS] = "0"
    self.assertEqual(self.subject.preset_mode, "comfort")
    self.dps[PRESET_DPS] = "1"
    self.assertEqual(self.subject.preset_mode, "boost")
    self.dps[PRESET_DPS] = "2"
    self.assertEqual(self.subject.preset_mode, "eco")
    self.dps[PRESET_DPS] = None
    self.assertIs(self.subject.preset_mode, None)