Staging
v0.8.1
v0.8.1
https://github.com/python/cpython
Tip revision: 1da43e5e916949c8e849e656d9d05fa4b9d6836c authored by Benjamin Peterson on 26 June 2009, 13:21:52 UTC
rearrange the sections of the README, so they'll hopefully be more in the order people will interested in
rearrange the sections of the README, so they'll hopefully be more in the order people will interested in
Tip revision: 1da43e5
test_binascii.py
"""Test the binascii C module."""
from test import support
import unittest
import binascii
class BinASCIITest(unittest.TestCase):
# Create binary test data
data = b"The quick brown fox jumps over the lazy dog.\r\n"
# Be slow so we don't depend on other modules
data += bytes(range(256))
data += b"\r\nHello world.\n"
def test_exceptions(self):
# Check module exceptions
self.assert_(issubclass(binascii.Error, Exception))
self.assert_(issubclass(binascii.Incomplete, Exception))
def test_functions(self):
# Check presence of all functions
funcs = []
for suffix in "base64", "hqx", "uu", "hex":
prefixes = ["a2b_", "b2a_"]
if suffix == "hqx":
prefixes.extend(["crc_", "rlecode_", "rledecode_"])
for prefix in prefixes:
name = prefix + suffix
self.assert_(hasattr(getattr(binascii, name), '__call__'))
self.assertRaises(TypeError, getattr(binascii, name))
for name in ("hexlify", "unhexlify"):
self.assert_(hasattr(getattr(binascii, name), '__call__'))
self.assertRaises(TypeError, getattr(binascii, name))
def test_base64valid(self):
# Test base64 with valid data
MAX_BASE64 = 57
lines = []
for i in range(0, len(self.data), MAX_BASE64):
b = self.data[i:i+MAX_BASE64]
a = binascii.b2a_base64(b)
lines.append(a)
res = bytes()
for line in lines:
b = binascii.a2b_base64(line)
res += b
self.assertEqual(res, self.data)
def test_base64invalid(self):
# Test base64 with random invalid characters sprinkled throughout
# (This requires a new version of binascii.)
MAX_BASE64 = 57
lines = []
for i in range(0, len(self.data), MAX_BASE64):
b = self.data[i:i+MAX_BASE64]
a = binascii.b2a_base64(b)
lines.append(a)
fillers = bytearray()
valid = b"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789+/"
for i in range(256):
if i not in valid:
fillers.append(i)
def addnoise(line):
noise = fillers
ratio = len(line) // len(noise)
res = bytearray()
while line and noise:
if len(line) // len(noise) > ratio:
c, line = line[0], line[1:]
else:
c, noise = noise[0], noise[1:]
res.append(c)
return res + noise + line
res = bytearray()
for line in map(addnoise, lines):
b = binascii.a2b_base64(line)
res += b
self.assertEqual(res, self.data)
# Test base64 with just invalid characters, which should return
# empty strings. TBD: shouldn't it raise an exception instead ?
self.assertEqual(binascii.a2b_base64(fillers), b'')
def test_uu(self):
MAX_UU = 45
lines = []
for i in range(0, len(self.data), MAX_UU):
b = self.data[i:i+MAX_UU]
a = binascii.b2a_uu(b)
lines.append(a)
res = bytes()
for line in lines:
b = binascii.a2b_uu(line)
res += b
self.assertEqual(res, self.data)
self.assertEqual(binascii.a2b_uu(b"\x7f"), b"\x00"*31)
self.assertEqual(binascii.a2b_uu(b"\x80"), b"\x00"*32)
self.assertEqual(binascii.a2b_uu(b"\xff"), b"\x00"*31)
self.assertRaises(binascii.Error, binascii.a2b_uu, b"\xff\x00")
self.assertRaises(binascii.Error, binascii.a2b_uu, b"!!!!")
self.assertRaises(binascii.Error, binascii.b2a_uu, 46*b"!")
def test_crc32(self):
crc = binascii.crc32(b"Test the CRC-32 of")
crc = binascii.crc32(b" this string.", crc)
self.assertEqual(crc, 1571220330)
self.assertRaises(TypeError, binascii.crc32)
# The hqx test is in test_binhex.py
def test_hex(self):
# test hexlification
s = b'{s\005\000\000\000worldi\002\000\000\000s\005\000\000\000helloi\001\000\000\0000'
t = binascii.b2a_hex(s)
u = binascii.a2b_hex(t)
self.assertEqual(s, u)
self.assertRaises(binascii.Error, binascii.a2b_hex, t[:-1])
self.assertRaises(binascii.Error, binascii.a2b_hex, t[:-1] + b'q')
self.assertEqual(binascii.hexlify(b'a'), b'61')
def test_qp(self):
# A test for SF bug 534347 (segfaults without the proper fix)
try:
binascii.a2b_qp("", **{1:1})
except TypeError:
pass
else:
self.fail("binascii.a2b_qp(**{1:1}) didn't raise TypeError")
self.assertEqual(binascii.a2b_qp(b"= "), b"= ")
self.assertEqual(binascii.a2b_qp(b"=="), b"=")
self.assertEqual(binascii.a2b_qp(b"=AX"), b"=AX")
self.assertRaises(TypeError, binascii.b2a_qp, foo="bar")
self.assertEqual(binascii.a2b_qp(b"=00\r\n=00"), b"\x00\r\n\x00")
self.assertEqual(
binascii.b2a_qp(b"\xff\r\n\xff\n\xff"),
b"=FF\r\n=FF\r\n=FF"
)
self.assertEqual(
binascii.b2a_qp(b"0"*75+b"\xff\r\n\xff\r\n\xff"),
b"0"*75+b"=\r\n=FF\r\n=FF\r\n=FF"
)
self.assertEqual(binascii.b2a_qp(b'\0\n'), b'=00\n')
self.assertEqual(binascii.b2a_qp(b'\0\n', quotetabs=True), b'=00\n')
self.assertEqual(binascii.b2a_qp(b'foo\tbar\t\n'), b'foo\tbar=09\n')
self.assertEqual(binascii.b2a_qp(b'foo\tbar\t\n', quotetabs=True),
b'foo=09bar=09\n')
self.assertEqual(binascii.b2a_qp(b'.'), b'=2E')
self.assertEqual(binascii.b2a_qp(b'.\n'), b'=2E\n')
self.assertEqual(binascii.b2a_qp(b'a.\n'), b'a.\n')
def test_empty_string(self):
# A test for SF bug #1022953. Make sure SystemError is not raised.
for n in ['b2a_qp', 'a2b_hex', 'b2a_base64', 'a2b_uu', 'a2b_qp',
'b2a_hex', 'unhexlify', 'hexlify', 'crc32', 'b2a_hqx',
'a2b_hqx', 'a2b_base64', 'rlecode_hqx', 'b2a_uu',
'rledecode_hqx']:
f = getattr(binascii, n)
try:
f(b'')
except SystemError as err:
self.fail("%s(b'') raises SystemError: %s" % (n, err))
binascii.crc_hqx(b'', 0)
def test_no_binary_strings(self):
# b2a_ must not accept strings
for f in (binascii.b2a_uu, binascii.b2a_base64,
binascii.b2a_hqx, binascii.b2a_qp,
binascii.hexlify, binascii.rlecode_hqx,
binascii.crc_hqx, binascii.crc32):
self.assertRaises(TypeError, f, "test")
def test_main():
support.run_unittest(BinASCIITest)
if __name__ == "__main__":
test_main()