Initial commit of OpenSPARC T2 architecture model.

[OpenSPARC-T2-SAM] / sam-t2 / devtools / v8plus / lib / python2.4 / test / test_binascii.py

"""Test the binascii C module."""

from test import test_support
import unittest
import binascii

class BinASCIITest(unittest.TestCase):

   # Create binary test data
   data = "The quick brown fox jumps over the lazy dog.\r\n"
   # Be slow so we don't depend on other modules
   data += "".join(map(chr, xrange(256)))
   data += "\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_(callable(getattr(binascii, name)))
               self.assertRaises(TypeError, getattr(binascii, name))
       for name in ("hexlify", "unhexlify"):
           self.assert_(callable(getattr(binascii, name)))
           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 = ""
       for line in lines:
           b = binascii.a2b_base64(line)
           res = 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 = ""
       valid = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789+/"
       for i in xrange(256):
           c = chr(i)
           if c not in valid:
               fillers += c
       def addnoise(line):
           noise = fillers
           ratio = len(line) // len(noise)
           res = ""
           while line and noise:
               if len(line) // len(noise) > ratio:
                   c, line = line[0], line[1:]
               else:
                   c, noise = noise[0], noise[1:]
               res += c
           return res + noise + line
       res = ""
       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), '')

   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 = ""
       for line in lines:
           b = binascii.a2b_uu(line)
           res += b
       self.assertEqual(res, self.data)

       self.assertEqual(binascii.a2b_uu("\x7f"), "\x00"*31)
       self.assertEqual(binascii.a2b_uu("\x80"), "\x00"*32)
       self.assertEqual(binascii.a2b_uu("\xff"), "\x00"*31)
       self.assertRaises(binascii.Error, binascii.a2b_uu, "\xff\x00")
       self.assertRaises(binascii.Error, binascii.a2b_uu, "!!!!")

       self.assertRaises(binascii.Error, binascii.b2a_uu, 46*"!")

   def test_crc32(self):
       crc = binascii.crc32("Test the CRC-32 of")
       crc = binascii.crc32(" 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 = '{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(TypeError, binascii.a2b_hex, t[:-1])
       self.assertRaises(TypeError, binascii.a2b_hex, t[:-1] + 'q')

       # Verify the treatment of Unicode strings
       if test_support.have_unicode:
           self.assertEqual(binascii.hexlify(unicode('a', 'ascii')), '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("= "), "")
       self.assertEqual(binascii.a2b_qp("=="), "=")
       self.assertEqual(binascii.a2b_qp("=AX"), "=AX")
       self.assertRaises(TypeError, binascii.b2a_qp, foo="bar")
       self.assertEqual(binascii.a2b_qp("=00\r\n=00"), "\x00\r\n\x00")
       self.assertEqual(
           binascii.b2a_qp("\xff\r\n\xff\n\xff"),
           "=FF\r\n=FF\r\n=FF"
       )
       self.assertEqual(
           binascii.b2a_qp("0"*75+"\xff\r\n\xff\r\n\xff"),
           "0"*75+"=\r\n=FF\r\n=FF\r\n=FF"
       )

   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)
           f('')
       binascii.crc_hqx('', 0)

def test_main():
   test_support.run_unittest(BinASCIITest)

if __name__ == "__main__":
   test_main()