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)
def test_error_detection_with_errors(self):
a = bytearray(os.urandom(50000))
b = SerialInterface.include_error_correction(a)
for i in range(6):
k = random.randint(0, len(b))
for i in range(100):
b[k+i] = 0
c = SerialInterface.recover_original_packet(b, 50000)
self.assertEqual(c, a)