def test_simple_crc32_class(self):
"""Verify the CRC class when not using xorOut"""
crc = Crc(g32)
str_rep = \
'''poly = 0x104C11DB7
reverse = True
initCrc = 0xFFFFFFFF
xorOut = 0x00000000
crcValue = 0xFFFFFFFF'''
self.assertEqual(str(crc), str_rep)
self.assertEqual(crc.digest(), '\xff\xff\xff\xff')
self.assertEqual(crc.hexdigest(), 'FFFFFFFF')
crc.update(self.msg)
self.assertEqual(crc.crcValue, 0xF7B400A7L)
self.assertEqual(crc.digest(), '\xf7\xb4\x00\xa7')
self.assertEqual(crc.hexdigest(), 'F7B400A7')
# Verify the .copy() method
x = crc.copy()
self.assertTrue(x is not crc)
str_rep = \
'''poly = 0x104C11DB7
reverse = True
initCrc = 0xFFFFFFFF
xorOut = 0x00000000
crcValue = 0xF7B400A7'''
self.assertEqual(str(crc), str_rep)
self.assertEqual(str(x), str_rep)
def test_simple_crc32_class(self):
"""Verify the CRC class when not using xorOut"""
crc = Crc(g32)
str_rep = \
'''poly = 0x104C11DB7
reverse = True
initCrc = 0xFFFFFFFF
xorOut = 0x00000000
crcValue = 0xFFFFFFFF'''
self.assertEqual(str(crc), str_rep)
self.assertEqual(crc.digest(), '\xff\xff\xff\xff')
self.assertEqual(crc.hexdigest(), 'FFFFFFFF')
crc.update(self.msg)
self.assertEqual(crc.crcValue, 0xF7B400A7L)
self.assertEqual(crc.digest(), '\xf7\xb4\x00\xa7')
self.assertEqual(crc.hexdigest(), 'F7B400A7')
# Verify the .copy() method
x = crc.copy()
self.assertTrue(x is not crc)
str_rep = \
'''poly = 0x104C11DB7
reverse = True
initCrc = 0xFFFFFFFF
xorOut = 0x00000000
crcValue = 0xF7B400A7'''
self.assertEqual(str(crc), str_rep)
self.assertEqual(str(x), str_rep)
def test_full_crc32_class(self):
"""Verify the CRC class when using xorOut"""
crc = Crc(g32, initCrc=0, xorOut=~0L)
str_rep = \
'''poly = 0x104C11DB7
reverse = True
initCrc = 0x00000000
xorOut = 0xFFFFFFFF
crcValue = 0x00000000'''
self.assertEqual(str(crc), str_rep)
self.assertEqual(crc.digest(), '\x00\x00\x00\x00')
self.assertEqual(crc.hexdigest(), '00000000')
crc.update(self.msg)
self.assertEqual(crc.crcValue, 0x84BFF58L)
self.assertEqual(crc.digest(), '\x08\x4b\xff\x58')
self.assertEqual(crc.hexdigest(), '084BFF58')
# Verify the .copy() method
x = crc.copy()
self.assertTrue(x is not crc)
str_rep = \
'''poly = 0x104C11DB7
reverse = True
initCrc = 0x00000000
xorOut = 0xFFFFFFFF
crcValue = 0x084BFF58'''
self.assertEqual(str(crc), str_rep)
self.assertEqual(str(x), str_rep)
# Verify the .new() method
y = crc.new()
self.assertTrue(y is not crc)
self.assertTrue(y is not x)
str_rep = \
'''poly = 0x104C11DB7
reverse = True
initCrc = 0x00000000
xorOut = 0xFFFFFFFF
crcValue = 0x00000000'''
self.assertEqual(str(y), str_rep)
def test_full_crc32_class(self):
"""Verify the CRC class when using xorOut"""
crc = Crc(g32, initCrc=0, xorOut= ~0L)
str_rep = \
'''poly = 0x104C11DB7
reverse = True
initCrc = 0x00000000
xorOut = 0xFFFFFFFF
crcValue = 0x00000000'''
self.assertEqual(str(crc), str_rep)
self.assertEqual(crc.digest(), '\x00\x00\x00\x00')
self.assertEqual(crc.hexdigest(), '00000000')
crc.update(self.msg)
self.assertEqual(crc.crcValue, 0x84BFF58L)
self.assertEqual(crc.digest(), '\x08\x4b\xff\x58')
self.assertEqual(crc.hexdigest(), '084BFF58')
# Verify the .copy() method
x = crc.copy()
self.assertTrue(x is not crc)
str_rep = \
'''poly = 0x104C11DB7
reverse = True
initCrc = 0x00000000
xorOut = 0xFFFFFFFF
crcValue = 0x084BFF58'''
self.assertEqual(str(crc), str_rep)
self.assertEqual(str(x), str_rep)
# Verify the .new() method
y = crc.new()
self.assertTrue(y is not crc)
self.assertTrue(y is not x)
str_rep = \
'''poly = 0x104C11DB7
reverse = True
initCrc = 0x00000000
xorOut = 0xFFFFFFFF
crcValue = 0x00000000'''
self.assertEqual(str(y), str_rep)