def test_valid_input(heading):
expected = bytearray([0xFF, 0xFF, 0x02, 0x01, 0x00, 0x03,
(heading >> 8) & 0xFF, heading & 0xFF])
expected.append((sum(expected[2:]) & 0xFF) ^ 0xFF)
request = SetHeading(heading)
assert request.tobytes() == expected
def test_example_input():
expected = bytearray([0xFF, 0xFF, 0x02, 0x01, 0x00, 0x03, 0x01, 0x2c, 0xCC])
request = SetHeading(300)
assert request.tobytes() == expected
def test_input_below_range(heading):
request = SetHeading(heading)
with pytest.raises(ValueError):
request.tobytes()