def test_checksum():
assert GPSSensor._build_checksum(
'$GPGGA,005206.768,5227.561,N,01230.806,E,1,12,1.0,0.0,M,0.0,M,,*00'
) == '68'
assert GPSSensor._build_checksum(
'GPGGA,005207.768,5249.958,N,01308.049,E,1,12,1.0,0.0,M,0.0,M,,*00'
) == '6E'
assert GPSSensor._build_checksum(
'$GPGGA,005208.768,5310.190,N,01409.023,E,1,12,1.0,0.0,M,0.0,M,,*00'
) == '6A'
assert GPSSensor._build_checksum(
'$GPGGA,005209.768,5300.094,N,01450.881,E,1,12,1.0,0.0,M,0.0,M,,*00'
) == '63'
assert GPSSensor._build_checksum(
'$GPGGA,005210.768,5148.313,N,01608.005,E,1,12,1.0,0.0,M,0.0,M,,*00'
) == '62'
assert GPSSensor._build_checksum(
'# $GPGGA,005211.768,5142.192,N,01454.836,E,1,12,1.0,0.0,M,0.0,M,,*00'
) == '61'
assert GPSSensor._build_checksum(
'$GPGGA,005212.768,5135.443,N,01332.439,E,1,12,1.0,0.0,M,0.0,M,,*00'
) == '6F'
assert GPSSensor._build_checksum(
'$GPGGA,005213.768,5153.810,N,01259.150,E,1,12,1.0,0.0,M,0.0,M,,*00'
) == '62'
def add_checksum_to_expected(expected: str) -> str:
checksum = GPSSensor._build_checksum(expected)
expected += checksum
return expected