def test_init(self):
configuration = Configuration(self.width, self.polynom,
self.init_value, self.final_xor_value,
self.reverse_input, self.reverse_output)
self.assertEqual(configuration.width, self.width)
self.assertEqual(configuration.polynomial, self.polynom)
self.assertEqual(configuration.init_value, self.init_value)
self.assertEqual(configuration.final_xor_value, self.final_xor_value)
self.assertEqual(configuration.reverse_input, self.reverse_input)
self.assertEqual(configuration.reverse_output, self.reverse_output)
def test_crc16_with_reflected_output(self):
config = Configuration(16, 0x1021, 0, 0, False, True)
crc_register = CrcRegister(config)
test_suit = [
CrcTestData(data='', checksum=0x0000),
CrcTestData(data=string.digits[1:], checksum=0xC38C),
CrcTestData(data=string.digits[1:][::-1], checksum=0xB539),
CrcTestData(data=string.digits, checksum=0x1A39),
CrcTestData(data=string.digits[::-1], checksum=0x669B),
]
for test in test_suit:
crc_register.init()
crc_register.update(test.data.encode('utf-8'))
self.assertEqual(test.checksum, crc_register.digest())