def test_calculate_1(self):
crcProc = DivisionCRC()
crc = crcProc.calculate2(0b1, 1, 0b1, 1)
self.assertEqual(crc, 0b1)
crc = crcProc.calculate2(0b0, 1, 0b1, 1)
self.assertEqual(crc, 0b0)
crc = crcProc.calculate2(0b10, 2, 0b1, 1)
self.assertEqual(crc, 0b1)
crc = crcProc.calculate2(0b01, 2, 0b1, 1)
self.assertEqual(crc, 0b1)
def test_calculate_2(self):
crcProc = DivisionCRC()
crc = crcProc.calculate2(0b00, 2, 0b11, 2)
self.assertEqual(crc, 0b00)
crc = crcProc.calculate2(0b01, 2, 0b11, 2)
self.assertEqual(crc, 0b11)
crc = crcProc.calculate2(0b10, 2, 0b11, 2)
self.assertEqual(crc, 0b01)
crc = crcProc.calculate2(0b11, 2, 0b11, 2)
self.assertEqual(crc, 0b10)
def test_calculate_2_repeated(self):
data = 0xABCD
crcSize = 16
dataSize = 16
inputPoly = 0x18005 ## 0x18005 = 98309
regInit = 0x0
xorOut = 0x0
reverse = True
## init: 0, xor: 0, rev, poly: 0x18005
crcFun = DivisionCRC()
crcFun.setReversed(reverse)
crcFun.setRegisterInitValue(regInit)
crcFun.setXorOutValue(xorOut)
crc = crcFun.calculate2(data, dataSize, inputPoly, crcSize)
for _ in xrange(0, 10):
crc2 = crcFun.calculate2(data, dataSize, inputPoly, crcSize)
self.assertEqual(crc, crc2)