python/test/crc.py

   1 #!/usr/bin/env python
   2 import os, sys
   3
   4 base = os.path.dirname(__file__)
   5 path = os.path.dirname(base)
   6 sys.path.insert(0, path)
   7 if len(sys.argv) > 1:
   8     sys.stdout = open(sys.argv[1], "w")
   9
  10 import liba  # type: ignore
  11
  12 text = b"0123456789"
  13
  14 crc = liba.crc8(0x07)
  15 assert crc.table
  16 assert crc(text) == 0x45
  17 assert crc(crc.pack(text)) == 0
  18
  19 crc = liba.crc8(0x31, reversed=True)
  20 assert crc.table
  21 assert crc(text) == 0x75
  22 assert crc(crc.pack(text)) == 0
  23
  24 crc = liba.crc16(0x1021)
  25 assert crc.table
  26 assert crc(text) == 0x9C58
  27 assert crc(crc.pack(text)) == 0
  28
  29 crc = liba.crc16(0x8005, reversed=True)
  30 assert crc.table
  31 assert crc(text) == 0x443D
  32 assert crc(crc.pack(text)) == 0
  33
  34 crc = liba.crc32(0x1EDC6F41)
  35 assert crc.table
  36 assert crc(text) == 0x512B456E
  37 assert crc(crc.pack(text)) == 0
  38
  39 crc = liba.crc32(0x04C11DB7, reversed=True)
  40 assert crc.table
  41 assert crc(text) == 0x450EAFB0
  42 assert crc(crc.pack(text)) == 0
  43
  44 crc = liba.crc64(0x000000000000001B)
  45 assert crc.table
  46 assert crc(text) == 0xE4FFBEA588AFC790
  47 assert crc(crc.pack(text)) == 0
  48
  49 crc = liba.crc64(0x42F0E1EBA9EA3693, reversed=True)
  50 assert crc.table
  51 assert crc(text) == 0xDA60676A5CDE0008
  52 assert crc(crc.pack(text)) == 0