77 lines
2.9 KiB
Python
77 lines
2.9 KiB
Python
#!/usr/bin/python -u
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#
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# Python Bindings for LZMA
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#
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# Copyright (c) 2004-2006 by Joachim Bauch, mail@joachim-bauch.de
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# 7-Zip Copyright (C) 1999-2005 Igor Pavlov
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# LZMA SDK Copyright (C) 1999-2005 Igor Pavlov
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#
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# This library is free software; you can redistribute it and/or
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# modify it under the terms of the GNU Lesser General Public
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# License as published by the Free Software Foundation; either
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# version 2.1 of the License, or (at your option) any later version.
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#
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# This library is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# Lesser General Public License for more details.
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#
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# You should have received a copy of the GNU Lesser General Public
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# License along with this library; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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#
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# $Id: test_compatibility.py 106 2006-01-08 18:19:04Z jojo $
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#
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import md5, random
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import pylzma
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import unittest
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from binascii import unhexlify
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if not hasattr(pylzma, 'decompress_compat'):
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raise ImportError, 'no compatibility support available'
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ALL_CHARS = ''.join([chr(x) for x in xrange(256)])
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# cache random strings to speed up tests
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_random_strings = {}
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def generate_random(size, choice=random.choice, ALL_CHARS=ALL_CHARS):
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global _random_strings
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if _random_strings.has_key(size):
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return _random_strings[size]
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s = ''.join([choice(ALL_CHARS) for x in xrange(size)])
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_random_strings[size] = s
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return s
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class TestPyLZMACompability(unittest.TestCase):
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def setUp(self):
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self.plain = 'hello, this is a test string'
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self.plain_with_eos = unhexlify('5d0000800000341949ee8def8c6b64909b1386e370bebeb1b656f5736d653c127731a214ff7031c000')
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self.plain_without_eos = unhexlify('5d0000800000341949ee8def8c6b64909b1386e370bebeb1b656f5736d653c115edbe9')
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def test_decompression_noeos(self):
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# test decompression without the end of stream marker
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decompressed = pylzma.decompress_compat(self.plain_without_eos)
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self.assertEqual(decompressed, self.plain)
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def test_compression_decompression_noeos(self):
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# call compression and decompression on random data of various sizes
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for i in xrange(18):
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size = 1 << i
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original = generate_random(size)
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result = pylzma.decompress_compat(pylzma.compress(original, eos=0))[:size]
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self.assertEqual(md5.new(original).hexdigest(), md5.new(result).hexdigest())
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def test_multi(self):
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# call compression and decompression multiple times to detect memory leaks...
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for x in xrange(4):
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self.test_compression_decompression_noeos()
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def test_main():
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from test import test_support
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test_support.run_unittest(TestPyLZMACompability)
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if __name__ == "__main__":
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unittest.main()
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