175 lines
6.3 KiB
Python
Executable File
175 lines
6.3 KiB
Python
Executable File
"""Test the binascii C module."""
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from test import test_support
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import unittest
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import binascii
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class BinASCIITest(unittest.TestCase):
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# Create binary test data
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data = "The quick brown fox jumps over the lazy dog.\r\n"
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# Be slow so we don't depend on other modules
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data += "".join(map(chr, xrange(256)))
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data += "\r\nHello world.\n"
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def test_exceptions(self):
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# Check module exceptions
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self.assert_(issubclass(binascii.Error, Exception))
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self.assert_(issubclass(binascii.Incomplete, Exception))
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def test_functions(self):
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# Check presence of all functions
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funcs = []
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for suffix in "base64", "hqx", "uu", "hex":
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prefixes = ["a2b_", "b2a_"]
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if suffix == "hqx":
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prefixes.extend(["crc_", "rlecode_", "rledecode_"])
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for prefix in prefixes:
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name = prefix + suffix
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self.assert_(callable(getattr(binascii, name)))
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self.assertRaises(TypeError, getattr(binascii, name))
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for name in ("hexlify", "unhexlify"):
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self.assert_(callable(getattr(binascii, name)))
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self.assertRaises(TypeError, getattr(binascii, name))
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def test_base64valid(self):
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# Test base64 with valid data
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MAX_BASE64 = 57
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lines = []
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for i in range(0, len(self.data), MAX_BASE64):
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b = self.data[i:i+MAX_BASE64]
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a = binascii.b2a_base64(b)
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lines.append(a)
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res = ""
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for line in lines:
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b = binascii.a2b_base64(line)
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res = res + b
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self.assertEqual(res, self.data)
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def test_base64invalid(self):
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# Test base64 with random invalid characters sprinkled throughout
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# (This requires a new version of binascii.)
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MAX_BASE64 = 57
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lines = []
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for i in range(0, len(self.data), MAX_BASE64):
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b = self.data[i:i+MAX_BASE64]
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a = binascii.b2a_base64(b)
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lines.append(a)
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fillers = ""
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valid = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789+/"
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for i in xrange(256):
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c = chr(i)
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if c not in valid:
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fillers += c
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def addnoise(line):
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noise = fillers
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ratio = len(line) // len(noise)
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res = ""
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while line and noise:
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if len(line) // len(noise) > ratio:
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c, line = line[0], line[1:]
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else:
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c, noise = noise[0], noise[1:]
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res += c
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return res + noise + line
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res = ""
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for line in map(addnoise, lines):
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b = binascii.a2b_base64(line)
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res += b
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self.assertEqual(res, self.data)
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# Test base64 with just invalid characters, which should return
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# empty strings. TBD: shouldn't it raise an exception instead ?
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self.assertEqual(binascii.a2b_base64(fillers), '')
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def test_uu(self):
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MAX_UU = 45
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lines = []
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for i in range(0, len(self.data), MAX_UU):
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b = self.data[i:i+MAX_UU]
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a = binascii.b2a_uu(b)
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lines.append(a)
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res = ""
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for line in lines:
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b = binascii.a2b_uu(line)
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res += b
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self.assertEqual(res, self.data)
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self.assertEqual(binascii.a2b_uu("\x7f"), "\x00"*31)
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self.assertEqual(binascii.a2b_uu("\x80"), "\x00"*32)
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self.assertEqual(binascii.a2b_uu("\xff"), "\x00"*31)
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self.assertRaises(binascii.Error, binascii.a2b_uu, "\xff\x00")
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self.assertRaises(binascii.Error, binascii.a2b_uu, "!!!!")
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self.assertRaises(binascii.Error, binascii.b2a_uu, 46*"!")
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def test_crc32(self):
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crc = binascii.crc32("Test the CRC-32 of")
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crc = binascii.crc32(" this string.", crc)
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self.assertEqual(crc, 1571220330)
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self.assertRaises(TypeError, binascii.crc32)
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# The hqx test is in test_binhex.py
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def test_hex(self):
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# test hexlification
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s = '{s\005\000\000\000worldi\002\000\000\000s\005\000\000\000helloi\001\000\000\0000'
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t = binascii.b2a_hex(s)
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u = binascii.a2b_hex(t)
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self.assertEqual(s, u)
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self.assertRaises(TypeError, binascii.a2b_hex, t[:-1])
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self.assertRaises(TypeError, binascii.a2b_hex, t[:-1] + 'q')
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# Verify the treatment of Unicode strings
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if test_support.have_unicode:
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self.assertEqual(binascii.hexlify(unicode('a', 'ascii')), '61')
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def test_qp(self):
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# A test for SF bug 534347 (segfaults without the proper fix)
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try:
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binascii.a2b_qp("", **{1:1})
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except TypeError:
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pass
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else:
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self.fail("binascii.a2b_qp(**{1:1}) didn't raise TypeError")
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self.assertEqual(binascii.a2b_qp("= "), "= ")
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self.assertEqual(binascii.a2b_qp("=="), "=")
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self.assertEqual(binascii.a2b_qp("=AX"), "=AX")
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self.assertRaises(TypeError, binascii.b2a_qp, foo="bar")
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self.assertEqual(binascii.a2b_qp("=00\r\n=00"), "\x00\r\n\x00")
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self.assertEqual(
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binascii.b2a_qp("\xff\r\n\xff\n\xff"),
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"=FF\r\n=FF\r\n=FF"
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)
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self.assertEqual(
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binascii.b2a_qp("0"*75+"\xff\r\n\xff\r\n\xff"),
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"0"*75+"=\r\n=FF\r\n=FF\r\n=FF"
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)
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self.assertEqual(binascii.b2a_qp('\0\n'), '=00\n')
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self.assertEqual(binascii.b2a_qp('\0\n', quotetabs=True), '=00\n')
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self.assertEqual(binascii.b2a_qp('foo\tbar\t\n'), 'foo\tbar=09\n')
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self.assertEqual(binascii.b2a_qp('foo\tbar\t\n', quotetabs=True), 'foo=09bar=09\n')
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self.assertEqual(binascii.b2a_qp('.'), '=2E')
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self.assertEqual(binascii.b2a_qp('.\n'), '=2E\n')
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self.assertEqual(binascii.b2a_qp('a.\n'), 'a.\n')
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def test_empty_string(self):
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# A test for SF bug #1022953. Make sure SystemError is not raised.
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for n in ['b2a_qp', 'a2b_hex', 'b2a_base64', 'a2b_uu', 'a2b_qp',
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'b2a_hex', 'unhexlify', 'hexlify', 'crc32', 'b2a_hqx',
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'a2b_hqx', 'a2b_base64', 'rlecode_hqx', 'b2a_uu',
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'rledecode_hqx']:
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f = getattr(binascii, n)
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f('')
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binascii.crc_hqx('', 0)
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def test_main():
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test_support.run_unittest(BinASCIITest)
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if __name__ == "__main__":
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test_main()
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