def test_error_detection(self):
for i in range(100, 64000, 1000):
a = bytearray(os.urandom(i))
b = SerialInterface.include_error_correction(a)
self.assertEqual(SerialInterface.real_packet_length(i), len(b))
c = SerialInterface.recover_original_packet(b, i)
self.assertEqual(c, a)
