def METHOD_NAME(self):
    self.assertRaises(ValueError, unsynch.decode, b'\xff\xff\xff\xff')
    self.assertRaises(ValueError, unsynch.decode, b'\xff\xf0\x0f\x00')
    self.assertRaises(ValueError, unsynch.decode, b'\xff\xe0')
    self.assertRaises(ValueError, unsynch.decode, b'\xff')