← Back to branch summary

~bzr-pqm/bzr/bzr.dev

« back to all changes in this revision

Viewing changes to bzrlib/tests/test_tuned_gzip.py

  • Committer: Vincent Ladeuil
  • Date: 2010-01-26 10:17:22 UTC
  • mfrom: (4985.1.5 add-attr-cleanup)
  • mto: This revision was merged to the branch mainline in revision 4988.
  • Revision ID: v.ladeuil+lp@free.fr-20100126101722-y213sv39buw3dgi2
Implement TestCase.overrideAttr to simplify tests setUp/cleanup

Show diffs side-by-side

added added

removed removed

Lines of Context:
bzrlib/tests/test_tuned_gzip.py
1
 
# Copyright (C) 2006, 2009, 2010, 2011 Canonical Ltd
 
1
# Copyright (C) 2006 Canonical Ltd
2
2
#
3
3
# This program is free software; you can redistribute it and/or modify
4
4
# it under the terms of the GNU General Public License as published by
21
21
# do not use bzrlib test cases here - this should be suitable for sending
22
22
# upstream.
23
23
from cStringIO import StringIO
 
24
from unittest import TestCase
24
25
import zlib
25
26
 
26
27
 
27
 
from bzrlib import (
28
 
    symbol_versioning,
29
 
    tuned_gzip,
30
 
    tests,
31
 
    )
 
28
from bzrlib import tuned_gzip
32
29
 
33
30
 
34
31
class FakeDecompress(object):
45
42
        return ''
46
43
 
47
44
 
48
 
class TestFakeDecompress(tests.TestCase):
 
45
class TestFakeDecompress(TestCase):
49
46
    """We use a fake decompressor to test GzipFile.
50
47
 
51
48
    This class tests the behaviours we want from it.
70
67
        self.assertEqual('1234567', decompress.unused_data)
71
68
 
72
69
 
73
 
class TestGzip(tests.TestCase):
 
70
class TestGzip(TestCase):
74
71
 
75
72
    def test__read_short_remainder(self):
76
73
        # a _read call at the end of a compressed hunk should
77
74
        # read more bytes if there is less than 8 bytes (the
78
75
        # gzip trailer) unread.
79
76
        stream = StringIO('\0\0\0\0\0\0\0\0')
80
 
        myfile = self.applyDeprecated(
81
 
            symbol_versioning.deprecated_in((2, 3, 0)),
82
 
            tuned_gzip.GzipFile, fileobj=stream)
 
77
        myfile = tuned_gzip.GzipFile(fileobj=stream)
83
78
        # disable the _new_member check, we are microtesting.
84
79
        myfile._new_member = False
85
80
        myfile.crc = zlib.crc32('')
89
84
        # all the data should have been read now
90
85
        self.assertEqual('', stream.read())
91
86
        # and it should be new member time in the stream.
92
 
        self.assertTrue(myfile._new_member)
93
 
 
94
 
    def test_negative_crc(self):
95
 
        """Content with a negative crc should not break when written"""
96
 
        sio = StringIO()
97
 
        gfile = self.applyDeprecated(
98
 
            symbol_versioning.deprecated_in((2, 3, 0)),
99
 
            tuned_gzip.GzipFile, mode="w", fileobj=sio)
100
 
        gfile.write("\xFF")
101
 
        gfile.close()
102
 
        self.assertEqual(gfile.crc & 0xFFFFFFFFL, 0xFF000000L)
103
 
        self.assertEqual(sio.getvalue()[-8:-4], "\x00\x00\x00\xFF")
104
 
 
105
 
 
106
 
class TestToGzip(tests.TestCase):
 
87
        self.failUnless(myfile._new_member)
 
88
 
 
89
 
 
90
class TestToGzip(TestCase):
107
91
 
108
92
    def assertToGzip(self, chunks):
109
93
        bytes = ''.join(chunks)
110
94
        gzfromchunks = tuned_gzip.chunks_to_gzip(chunks)
111
95
        gzfrombytes = tuned_gzip.bytes_to_gzip(bytes)
112
96
        self.assertEqual(gzfrombytes, gzfromchunks)
113
 
        decoded = self.applyDeprecated(
114
 
            symbol_versioning.deprecated_in((2, 3, 0)),
115
 
            tuned_gzip.GzipFile, fileobj=StringIO(gzfromchunks)).read()
 
97
        decoded = tuned_gzip.GzipFile(fileobj=StringIO(gzfromchunks)).read()
116
98
        self.assertEqual(bytes, decoded)
117
99
 
118
100
    def test_single_chunk(self):