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  • Committer: Canonical.com Patch Queue Manager
  • Date: 2010-03-29 08:06:16 UTC
  • mfrom: (5120.1.1 integration)
  • Revision ID: pqm@pqm.ubuntu.com-20100329080616-84azimjwafaukcey
(igc) Fix py2exe packaging of sqlite3

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bzrlib/tests/test_tuned_gzip.py
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# Copyright (C) 2006 by Canonical Ltd
 
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# Copyright (C) 2006 Canonical Ltd
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; 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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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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"""Tests for tuned_gzip."""
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import zlib
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from bzrlib.tuned_gzip import *
 
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from bzrlib import tuned_gzip
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class FakeDecompress(object):
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    def decompress(self, buf):
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        """Return an empty string as though we are at eof."""
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        # note that the zlib module *overwrites* unused data 
 
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        # note that the zlib module *overwrites* unused data
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        # on writes after EOF.
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        self.unused_data = buf
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        return ''
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    def test__read_short_remainder(self):
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        # a _read call at the end of a compressed hunk should
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        # read more bytes if there is less than 8 bytes (the 
 
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        # read more bytes if there is less than 8 bytes (the
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        # gzip trailer) unread.
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        stream = StringIO('\0\0\0\0\0\0\0\0')
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        myfile = GzipFile(fileobj=stream)
 
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        myfile = tuned_gzip.GzipFile(fileobj=stream)
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        # disable the _new_member check, we are microtesting.
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        myfile._new_member = False
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        myfile.crc = zlib.crc32('')
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        self.assertEqual('', stream.read())
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        # and it should be new member time in the stream.
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        self.failUnless(myfile._new_member)
 
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class TestToGzip(TestCase):
 
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    def assertToGzip(self, chunks):
 
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        bytes = ''.join(chunks)
 
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        gzfromchunks = tuned_gzip.chunks_to_gzip(chunks)
 
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        gzfrombytes = tuned_gzip.bytes_to_gzip(bytes)
 
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        self.assertEqual(gzfrombytes, gzfromchunks)
 
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        decoded = tuned_gzip.GzipFile(fileobj=StringIO(gzfromchunks)).read()
 
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        self.assertEqual(bytes, decoded)
 
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    def test_single_chunk(self):
 
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        self.assertToGzip(['a modest chunk\nwith some various\nbits\n'])
 
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    def test_simple_text(self):
 
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        self.assertToGzip(['some\n', 'strings\n', 'to\n', 'process\n'])
 
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    def test_large_chunks(self):
 
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        self.assertToGzip(['a large string\n'*1024])
 
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        self.assertToGzip(['a large string\n']*1024)
 
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    def test_enormous_chunks(self):
 
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        self.assertToGzip(['a large string\n'*1024*256])
 
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        self.assertToGzip(['a large string\n']*1024*256)