def test_add_messages_set_rcv_error_to_true_if_message_is_corrupted():
# Given
nb_packet = 2
total_bytes = 50
pixel_size = 3
creation = 1000
height = 10
length = 10
vt = VideoTopic(nb_packet=nb_packet, total_bytes=total_bytes, height=height, length=length, pixel_size=pixel_size,
time_creation=creation)
test_msg = UDPMessage()
test_msg.crc = list(test_msg.crc)
test_msg.crc[0] += 1
test_msg.crc = bytes(test_msg.crc)
# When
vt.add_message(test_msg)
# Then
assert vt.rcv_error is True
def test_from_bytes_returns_none_if_message_is_corrupted():
# Given
message_nb = bytes([2, 0])
payload = bytes([49, 49, 49, 49])
msg_id = bytes([48, 48, 48, 48])
topic = bytes([1, 0, 0, 0])
# When
msg = UDPMessage(subtopic=message_nb,
payload=payload,
code=msg_id,
topic=topic)
msg.crc = bytes()
result = UDPMessage.from_bytes(msg.to_bytes())
# Then
assert result is None