python/test/crc.py

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