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Issue #23728: binascii.crc_hqx() could return an integer outside of the range

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0-0xffff for empty data.
This commit is contained in:
Serhiy Storchaka 2015-04-20 09:31:51 +03:00
commit e3037e1145
4 changed files with 31 additions and 16 deletions
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12
Lib/test/test_binascii.py
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@ -135,6 +135,18 @@ class BinASCIITest(unittest.TestCase):
# Issue #7701 (crash on a pydebug build)
self.assertEqual(binascii.b2a_uu(b'x'), b'!> \n')
def test_crc_hqx(self):
crc = binascii.crc_hqx(self.type2test(b"Test the CRC-32 of"), 0)
crc = binascii.crc_hqx(self.type2test(b" this string."), crc)
self.assertEqual(crc, 14290)
self.assertRaises(TypeError, binascii.crc_hqx)
self.assertRaises(TypeError, binascii.crc_hqx, self.type2test(b''))
for crc in 0, 1, 0x1234, 0x12345, 0x12345678, -1:
self.assertEqual(binascii.crc_hqx(self.type2test(b''), crc),
crc & 0xffff)
def test_crc32(self):
crc = binascii.crc32(self.type2test(b"Test the CRC-32 of"))
crc = binascii.crc32(self.type2test(b" this string."), crc)