1
# (C) 2005 Canonical Ltd
3
# This program is free software; you can redistribute it and/or modify
4
# it under the terms of the GNU General Public License as published by
5
# the Free Software Foundation; either version 2 of the License, or
6
# (at your option) any later version.
8
# This program is distributed in the hope that it will be useful,
9
# but WITHOUT ANY WARRANTY; without even the implied warranty of
10
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11
# GNU General Public License for more details.
13
# You should have received a copy of the GNU General Public License
14
# along with this program; if not, write to the Free Software
15
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17
from bzrlib.selftest import TestCaseInTempDir
23
return sha.new(t).hexdigest()
28
# allow it to stabilize
29
start = int(time.time())
30
while int(time.time()) == start:
34
class TestHashCache(TestCaseInTempDir):
36
def test_hashcache(self):
37
"""Functional tests for hashcache"""
38
from bzrlib.hashcache import HashCache
41
# make a dummy bzr directory just to hold the cache
45
file('foo', 'wb').write('hello')
49
self.assertEquals(hc.get_sha1('foo'),
50
'aaf4c61ddcc5e8a2dabede0f3b482cd9aea9434d')
51
self.assertEquals(hc.miss_count, 1)
52
self.assertEquals(hc.hit_count, 0)
54
# check we hit without re-reading
55
self.assertEquals(hc.get_sha1('foo'),
56
'aaf4c61ddcc5e8a2dabede0f3b482cd9aea9434d')
57
self.assertEquals(hc.miss_count, 1)
58
self.assertEquals(hc.hit_count, 1)
60
# check again without re-reading
61
self.assertEquals(hc.get_sha1('foo'),
62
'aaf4c61ddcc5e8a2dabede0f3b482cd9aea9434d')
63
self.assertEquals(hc.miss_count, 1)
64
self.assertEquals(hc.hit_count, 2)
66
# write new file and make sure it is seen
67
file('foo', 'wb').write('goodbye')
69
self.assertEquals(hc.get_sha1('foo'),
70
'3c8ec4874488f6090a157b014ce3397ca8e06d4f')
71
self.assertEquals(hc.miss_count, 2)
73
# quickly write new file of same size and make sure it is seen
74
# this may rely on detection of timestamps that are too close
76
file('foo', 'wb').write('g00dbye')
77
self.assertEquals(hc.get_sha1('foo'),
80
file('foo2', 'wb').write('other file')
81
self.assertEquals(hc.get_sha1('foo2'), sha1('other file'))
84
self.assertEquals(hc.get_sha1('foo2'), None)
86
file('foo2', 'wb').write('new content')
87
self.assertEquals(hc.get_sha1('foo2'), sha1('new content'))
89
self.assertEquals(hc.get_sha1('subdir'), None)
91
# it's likely neither are cached at the moment because they
92
# changed recently, but we can't be sure
95
# should now be safe to cache it if we reread them
96
self.assertEquals(hc.get_sha1('foo'), sha1('g00dbye'))
97
self.assertEquals(len(hc._cache), 1)
98
self.assertEquals(hc.get_sha1('foo2'), sha1('new content'))
99
self.assertEquals(len(hc._cache), 2)
101
# write out, read back in and check that we don't need to
109
self.assertEquals(len(hc._cache), 2)
110
self.assertEquals(hc.get_sha1('foo'), sha1('g00dbye'))
111
self.assertEquals(hc.hit_count, 1)
112
self.assertEquals(hc.miss_count, 0)
113
self.assertEquals(hc.get_sha1('foo2'), sha1('new content'))