#! /usr/bin/env python2.2 __doc__ = """test case for samba.tdbkpack 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 ' import unittest import oldtdbutil import samba.tdbpack both_unpackers = (samba.tdbpack.unpack, oldtdbutil.unpack) both_packers = (samba.tdbpack.pack, oldtdbutil.pack) 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', [-1], '\xff\xff\xff\xff'), # ('d', [-255], '\x01\xff\xff\xff'), # ('d', [-256], '\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'), # ('B', [5, 'hello'], '\x05\0\0\0hello'), # # ('B', [10, 'hello'], '\x0a\0\0\0hello'), # # ('B', [2, '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), ] def test_symmetric(self): """Cookbook of symmetric pack/unpack tests """ for packer in 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'), ('p', [None], '\0\0\0\0'), ('p', ['true'], '\x01\0\0\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`)) if __name__ == '__main__': unittest.main()