def test_check_checksum_raises_exception_if_checksum_invalid(
self, simple_encoded_msg):
with pytest.raises(ParsingError):
encoded_msg = simple_encoded_msg[:-4] + b"123" + settings.SOH
DecoderApp.check_checksum(encoded_msg, 0, 19)
def test_check_checksum_not_found_raises_exception(self,
simple_encoded_msg):
with pytest.raises(ParsingError):
encoded_msg = simple_encoded_msg[:-7]
DecoderApp.check_checksum(encoded_msg)
def test_check_checksum_trailing_bytes_raises_exception(
self, simple_encoded_msg):
with pytest.raises(ParsingError):
message = simple_encoded_msg + b"34=1" + settings.SOH
DecoderApp.check_checksum(message)
def test_check_checksum(self, simple_encoded_msg):
checksum, _ = DecoderApp.check_checksum(simple_encoded_msg)
assert checksum == 163