def test_decode_invalid_packet_checksum():
encoded = Packet.data(
checksum_mode=ChecksumMode.Disabled,
transfer_mode=TransferMode.AckLastFragmentOnly,
fragment_amount=1,
fragment_number=0,
message_id=1,
payload_data=b'dummy',
)
encoded._checksum = 12345
with pytest.raises(ValueError):
Packet.from_bytes(bytes(encoded))
def test_encode_decode_sync_checksum_mode_disabled():
encoded = Packet.sync(checksum_mode=ChecksumMode.Disabled, )
encoded_bytes = bytes(encoded)
decoded = Packet.from_bytes(encoded_bytes)
decoded_bytes = decoded.as_bytes
assert encoded_bytes == decoded_bytes
def test_encode_decode_data_ack_last_fragment_only():
encoded = Packet.data(
checksum_mode=ChecksumMode.Disabled,
transfer_mode=TransferMode.AckLastFragmentOnly,
fragment_amount=1,
fragment_number=0,
message_id=1,
payload_data=b'dummy',
)
encoded_bytes = bytes(encoded)
decoded = Packet.from_bytes(encoded_bytes)
decoded_bytes = decoded.as_bytes
assert encoded_bytes == decoded_bytes
def test_encode_decode_data():
encoded = Packet.data(
checksum_mode=ChecksumMode.Disabled,
transfer_mode=TransferMode.AckEveryPacket,
fragment_amount=10,
fragment_number=5,
message_id=12345,
payload_data=b'dummy',
)
encoded_bytes = bytes(encoded)
decoded = Packet.from_bytes(encoded_bytes)
decoded_bytes = decoded.as_bytes
assert encoded_bytes == decoded_bytes
def test_decode_invalid_packet_protocol_version():
with pytest.raises(ValueError):
Packet.from_bytes(b'000000000000')
def test_decode_invalid_data_length():
with pytest.raises(ValueError):
Packet.from_bytes(b'dummy')