def test_sequence_increment():
# Test that the sequence number can be increased and the wrap around at 255 is correct
built_packet = DataPacket(cid=(16, 1, 15, 2, 14, 3, 13, 4, 12, 5, 11, 6,
10, 7, 9, 8),
sourceName='Test Name',
universe=30)
built_packet.sequence = 78
built_packet.sequence_increase()
assert built_packet.sequence == 79
built_packet.sequence = 255
built_packet.sequence_increase()
assert built_packet.sequence == 0
def test_property_adjustment_and_deconstruction():
# Converting DataPacket -> bytes -> DataPacket should produce the same result,
# but with changed properties that are not the default
built_packet = DataPacket(cid=(16, 1, 15, 2, 14, 3, 13, 4, 12, 5, 11, 6,
10, 7, 9, 8),
sourceName='Test Name',
universe=30)
built_packet.cid = tuple(range(16))
built_packet.sourceName = '2nd Test Name'
built_packet.universe = 31425
built_packet.dmxData = ((200, ) + tuple(range(255, 0, -1)) +
tuple(range(255)) + (0, ))
built_packet.priority = 12
built_packet.sequence = 45
built_packet.option_StreamTerminated = True
built_packet.option_PreviewData = True
built_packet.option_ForceSync = True
built_packet.syncAddr = 34003
built_packet.dmxStartCode = 8
read_packet = DataPacket.make_data_packet(built_packet.getBytes())
assert read_packet.cid == tuple(range(16))
assert read_packet.sourceName == '2nd Test Name'
assert read_packet.universe == 31425
assert read_packet.dmxData == ((200, ) + tuple(range(255, 0, -1)) +
tuple(range(255)) + (0, ))
assert read_packet.priority == 12
assert read_packet.sequence == 45
assert read_packet.option_StreamTerminated is True
assert read_packet.option_PreviewData is True
assert read_packet.option_ForceSync is True
assert read_packet.syncAddr == 34003
assert read_packet.dmxStartCode == 8