def test_002_checksum(self):
checks = [
[ 0x20, 0x24, 0x62 ],
[ 0x61, 0x7c, 0x87 ],
[ 49, 50, 51, 52, 53, 54, 55, 56, 57, 0x31, 0xc3 ],
[ 16, 52, 9, 16, 1, 112, 98, 222 ]
]
for ck in checks:
self.assertEqual(crc_ccitt_16(ck), 0)
def test_003_multipass(self):
checks = [
[ [ '123', '456', '789' ], 0x31c3 ],
[ [ '123', '456', '789', 0x31, 0xc3 ], 0 ],
[ [ 49, 50, 51, 52, 53, 54, 55, 56, 57 ], 0x31c3 ],
[ [ 49, 50, 51, 52, 53, 54, 55, 56, 57, 0x31, 0xc3 ], 0 ],
]
for ck in checks:
_crc = 0
for part in ck[0]:
_crc = crc_ccitt_16(part, _crc)
self.assertEqual(_crc, ck[1])
def test_001_generation(self):
checks = [
[ '123456789', 0x31C3 ],
[ 'hello world', 0x3BE4 ],
[ 'Hello world', 0x919E ],
[ 'a', 0x7C87 ],
[ ' ', 0x2462 ],
[ 32, 0x2462 ],
[ 0x20, 0x2462 ],
]
for ck in checks:
self.assertEqual(crc_ccitt_16(ck[0]), ck[1])
