← 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: Tarmac
  • Author(s): Vincent Ladeuil
  • Date: 2017-01-30 14:42:05 UTC
  • mfrom: (6620.1.1 trunk)
  • Revision ID: tarmac-20170130144205-r8fh2xpmiuxyozpv
Merge  2.7 into trunk including fix for bug #1657238 [r=vila]

Show diffs side-by-side

added added

removed removed

Lines of Context:
bzrlib/tests/test_tuned_gzip.py
1
 
# Copyright (C) 2006 Canonical Ltd
 
1
# Copyright (C) 2006, 2009, 2010, 2011 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
25
24
import zlib
26
25
 
27
26
 
28
 
from bzrlib import tuned_gzip
 
27
from bzrlib import (
 
28
    symbol_versioning,
 
29
    tuned_gzip,
 
30
    tests,
 
31
    )
29
32
 
30
33
 
31
34
class FakeDecompress(object):
42
45
        return ''
43
46
 
44
47
 
45
 
class TestFakeDecompress(TestCase):
 
48
class TestFakeDecompress(tests.TestCase):
46
49
    """We use a fake decompressor to test GzipFile.
47
50
 
48
51
    This class tests the behaviours we want from it.
67
70
        self.assertEqual('1234567', decompress.unused_data)
68
71
 
69
72
 
70
 
class TestGzip(TestCase):
 
73
class TestGzip(tests.TestCase):
71
74
 
72
75
    def test__read_short_remainder(self):
73
76
        # a _read call at the end of a compressed hunk should
74
77
        # read more bytes if there is less than 8 bytes (the
75
78
        # gzip trailer) unread.
76
79
        stream = StringIO('\0\0\0\0\0\0\0\0')
77
 
        myfile = tuned_gzip.GzipFile(fileobj=stream)
 
80
        myfile = self.applyDeprecated(
 
81
            symbol_versioning.deprecated_in((2, 3, 0)),
 
82
            tuned_gzip.GzipFile, fileobj=stream)
78
83
        # disable the _new_member check, we are microtesting.
79
84
        myfile._new_member = False
80
85
        myfile.crc = zlib.crc32('')
84
89
        # all the data should have been read now
85
90
        self.assertEqual('', stream.read())
86
91
        # and it should be new member time in the stream.
87
 
        self.failUnless(myfile._new_member)
 
92
        self.assertTrue(myfile._new_member)
88
93
 
89
94
    def test_negative_crc(self):
90
95
        """Content with a negative crc should not break when written"""
91
96
        sio = StringIO()
92
 
        gfile = tuned_gzip.GzipFile(mode="w", fileobj=sio)
 
97
        gfile = self.applyDeprecated(
 
98
            symbol_versioning.deprecated_in((2, 3, 0)),
 
99
            tuned_gzip.GzipFile, mode="w", fileobj=sio)
93
100
        gfile.write("\xFF")
94
101
        gfile.close()
95
102
        self.assertEqual(gfile.crc & 0xFFFFFFFFL, 0xFF000000L)
96
103
        self.assertEqual(sio.getvalue()[-8:-4], "\x00\x00\x00\xFF")
97
104
 
98
105
 
99
 
class TestToGzip(TestCase):
 
106
class TestToGzip(tests.TestCase):
100
107
 
101
108
    def assertToGzip(self, chunks):
102
 
        bytes = ''.join(chunks)
 
109
        raw_bytes = ''.join(chunks)
103
110
        gzfromchunks = tuned_gzip.chunks_to_gzip(chunks)
104
 
        gzfrombytes = tuned_gzip.bytes_to_gzip(bytes)
 
111
        gzfrombytes = tuned_gzip.bytes_to_gzip(raw_bytes)
105
112
        self.assertEqual(gzfrombytes, gzfromchunks)
106
 
        decoded = tuned_gzip.GzipFile(fileobj=StringIO(gzfromchunks)).read()
107
 
        self.assertEqual(bytes, decoded)
 
113
        decoded = self.applyDeprecated(
 
114
            symbol_versioning.deprecated_in((2, 3, 0)),
 
115
            tuned_gzip.GzipFile, fileobj=StringIO(gzfromchunks)).read()
 
116
        lraw, ldecoded = len(raw_bytes), len(decoded)
 
117
        self.assertEqual(lraw, ldecoded,
 
118
                         'Expecting data length %d, got %d' % (lraw, ldecoded))
 
119
        self.assertEqual(raw_bytes, decoded)
108
120
 
109
121
    def test_single_chunk(self):
110
122
        self.assertToGzip(['a modest chunk\nwith some various\nbits\n'])