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#! /usr/bin/env python2.2
__doc__ = """test case for samba.tdbpack functions
tdbpack provides a means of pickling values into binary formats
compatible with that used by the samba tdbpack()/tdbunpack()
functions.
Numbers are always stored in little-endian format; strings are stored
in either DOS or Unix codepage as appropriate.
The format for any particular element is encoded as a short ASCII
string, with one character per field."""
# Copyright (C) 2002 Hewlett-Packard.
__author__ = 'Martin Pool <mbp@sourcefrog.net>'
import unittest
import oldtdbutil
import samba.tdbpack
both_unpackers = (samba.tdbpack.unpack, oldtdbutil.unpack)
both_packers = (samba.tdbpack.pack, oldtdbutil.pack)
# # ('B', [10, 'hello'], '\x0a\0\0\0hello'),
# ('BB', [11, 'hello\0world', 3, 'now'],
# '\x0b\0\0\0hello\0world\x03\0\0\0now'),
# ('pd', [1, 10], '\x01\0\0\0\x0a\0\0\0'),
# ('BBB', [5, 'hello', 0, '', 5, 'world'],
# '\x05\0\0\0hello\0\0\0\0\x05\0\0\0world'),
# strings are sequences in Python, there's no getting away
# from it
# ('ffff', 'evil', 'e\0v\0i\0l\0'),
# ('BBBB', 'evil',
# '\x01\0\0\0e'
# '\x01\0\0\0v'
# '\x01\0\0\0i'
# '\x01\0\0\0l'),
# ('', [], ''),
# # exercise some long strings
# ('PP', ['hello' * 255, 'world' * 255],
# 'hello' * 255 + '\0' + 'world' * 255 + '\0'),
# ('PP', ['hello' * 40000, 'world' * 50000],
# 'hello' * 40000 + '\0' + 'world' * 50000 + '\0'),
# ('B', [(5*51), 'hello' * 51], '\xff\0\0\0' + 'hello' * 51),
# ('BB', [(5 * 40000), 'hello' * 40000,
# (5 * 50000), 'world' * 50000],
# '\x40\x0d\x03\0' + 'hello' * 40000 + '\x90\xd0\x03\x00' + 'world' * 50000),
class PackTests(unittest.TestCase):
symm_cases = [
('w', [42], '\x2a\0'),
('www', [42, 2, 69], '\x2a\0\x02\0\x45\0'),
('wd', [42, 256], '\x2a\0\0\x01\0\0'),
('w', [0], '\0\0'),
('w', [255], '\xff\0'),
('w', [256], '\0\x01'),
('w', [0xdead], '\xad\xde'),
('w', [0xffff], '\xff\xff'),
('p', [0], '\0\0\0\0'),
('p', [1], '\x01\0\0\0'),
('d', [0x01020304], '\x04\x03\x02\x01'),
('d', [0x7fffffff], '\xff\xff\xff\x7f'),
('d', [0x80000000L], '\x00\x00\x00\x80'),
('d', [0x80000069L], '\x69\x00\x00\x80'),
('d', [0xffffffffL], '\xff\xff\xff\xff'),
('d', [0xffffff00L], '\x00\xff\xff\xff'),
('ddd', [1, 10, 50], '\x01\0\0\0\x0a\0\0\0\x32\0\0\0'),
('ff', ['hello', 'world'], 'hello\0world\0'),
('fP', ['hello', 'world'], 'hello\0world\0'),
('PP', ['hello', 'world'], 'hello\0world\0'),
('B', [0, ''], '\0\0\0\0'),
# old implementation is wierd when string is not the right length
# ('B', [2, 'hello'], '\x0a\0\0\0hello'),
('B', [5, 'hello'], '\x05\0\0\0hello'),
]
def test_symmetric(self):
"""Cookbook of symmetric pack/unpack tests
"""
for packer in [samba.tdbpack.pack]: # both_packers:
for unpacker in both_unpackers:
for format, values, expected in self.symm_cases:
out_packed = packer(format, values)
self.assertEquals(out_packed, expected)
out, rest = unpacker(format, expected)
self.assertEquals(rest, '')
self.assertEquals(list(values), list(out))
def test_large(self):
"""Test large pack/unpack strings"""
large_cases = [('w' * 1000, xrange(1000)), ]
for packer in both_packers:
for unpacker in both_unpackers:
for format, values in large_cases:
packed = packer(format, values)
out, rest = unpacker(format, packed)
self.assertEquals(rest, '')
self.assertEquals(list(values), list(out))
def test_pack(self):
"""Cookbook of expected pack values
These can't be used for the symmetric test because the unpacked value is
not "canonical".
"""
cases = [('w', (42,), '\x2a\0'),
]
for packer in both_packers:
for format, values, expected in cases:
self.assertEquals(packer(format, values), expected)
def test_unpack_extra(self):
# Test leftover data
for unpacker in both_unpackers:
for format, values, packed in self.symm_cases:
out, rest = unpacker(format, packed + 'hello sailor!')
self.assertEquals(rest, 'hello sailor!')
self.assertEquals(list(values), list(out))
def test_pack_extra(self):
"""Leftover values when packing"""
cases = [
('d', [10, 20], [10]),
('d', [10, 'hello'], [10]),
('ff', ['hello', 'world', 'sailor'], ['hello', 'world']),
]
for unpacker in both_unpackers:
for packer in both_packers:
for format, values, chopped in cases:
bin = packer(format, values)
out, rest = unpacker(format, bin)
self.assertEquals(list(out), list(chopped))
self.assertEquals(rest, '')
def test_unpack(self):
"""Cookbook of tricky unpack tests"""
cases = [
# Apparently I couldn't think of any tests that weren't
# symmetric :-/
]
for unpacker in both_unpackers:
for format, values, expected in cases:
out, rest = unpacker(format, expected)
self.assertEquals(rest, '')
self.assertEquals(list(values), list(out))
def test_pack_failures(self):
"""Expected errors for incorrect packing"""
cases = [('w', []),
# ('w', ()),
# ('w', {}),
('ww', [2]),
('w', 2),
# ('w', None),
('wwwwwwwwwwww', []),
# ('w', [0x60A15EC5L]),
# ('w', [None]),
('d', []),
('p', []),
('f', [2]),
('P', [None]),
('P', ()),
('f', [hex]),
('fw', ['hello']),
# ('f', [u'hello']),
('B', [2]),
(None, [2, 3, 4]),
(ord('f'), [20]),
# old code doesn't distinguish string from seq-of-char
# (['w', 'w'], [2, 2]),
# old code just ignores invalid characters
# ('Q', [2]),
# ('fQ', ['2', 3]),
# ('fQ', ['2']),
(2, [2]),
# old code doesn't typecheck format
# ({}, {})
]
for packer in both_packers:
for format, values in cases:
try:
packer(format, values)
except StandardError:
pass
else:
raise AssertionError("didn't get exception: format %s, values %s, packer %s"
% (`format`, `values`, `packer`))
def test_unpack_failures(self):
"""Expected errors for incorrect unpacking"""
cases = [
# This ought to be illegal, but the old code doesn't prohibit it
# ('$', '', ValueError),
# ('Q', '', ValueError),
# ('Q$', '', ValueError),
('f', '', IndexError),
('d', '', IndexError),
# This is an illegal packing, but the old code doesn't trap
# ('d', '2', IndexError),
# ('d', '22', IndexError),
# ('d', '222', IndexError),
# ('p', '\x01\0', IndexError),
# ('w', '2', IndexError),
# ('B', '\xff\0\0\0hello', IndexError),
# ('B', '\xff\0', IndexError),
('w', '', IndexError),
('f', 'hello', IndexError),
('f', '', IndexError),
# ('B', '\x01\0\0\0', IndexError),
# ('B', '\x05\0\0\0hell', IndexError),
('B', '\xff\xff\xff\xff', ValueError),
# ('B', 'foobar', IndexError),
# ('BB', '\x01\0\0\0a\x01', IndexError),
]
for unpacker in both_unpackers:
for format, values, throwable_class in cases:
try:
unpacker(format, values)
except StandardError:
pass
else:
raise AssertionError("didn't get exception: format %s, values %s, unpacker %s"
% (`format`, `values`, `unpacker`))
def test_unpack_repeated(self):
cases = [(('df$',
'\x00\x00\x00\x00HP C LaserJet 4500-PS\x00Windows 4.0\x00\\print$\\WIN40\\0\\PSCRIPT.DRV\x00\\print$\\WIN40\\0\\PSCRIPT.DRV\x00\\print$\\WIN40\\0\\PSCRIPT.DRV\x00\\print$\\WIN40\\0\\PSCRIPT.HLP\x00\x00RAW\x00\\print$\\WIN40\\0\\readme.wri\x00\\print$\\WIN40\\0\\pscript.drv\x00\\print$\\WIN40\\0\\pscript.hlp\x00'),
([0L, 'HP C LaserJet 4500-PS', 'Windows 4.0', '\\print$\\WIN40\\0\\PSCRIPT.DRV', '\\print$\\WIN40\\0\\PSCRIPT.DRV', '\\print$\\WIN40\\0\\PSCRIPT.DRV', '\\print$\\WIN40\\0\\PSCRIPT.HLP', '', 'RAW', '\\print$\\WIN40\\0\\readme.wri', '\\print$\\WIN40\\0\\pscript.drv', '\\print$\\WIN40\\0\\pscript.hlp'], ''))]
for unpacker in both_unpackers:
for input, expected in cases:
result = apply(unpacker, input)
if result != expected:
raise AssertionError("%s:\n input: %s\n output: %s\n expected: %s" % (`unpacker`, `input`, `result`, `expected`))
if __name__ == '__main__':
unittest.main()
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