/usr/share/pyshared/obnamlib/lockmgr_tests.py is in obnam 1.6.1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 | # Copyright 2012 Lars Wirzenius
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import os
import shutil
import tempfile
import unittest
import obnamlib
class LockManagerTests(unittest.TestCase):
def locked(self, dirname):
return os.path.exists(os.path.join(dirname, 'lock'))
def fake_time(self):
self.now += 1
return self.now
def setUp(self):
self.tempdir = tempfile.mkdtemp()
self.dirnames = []
for x in ['a', 'b', 'c']:
dirname = os.path.join(self.tempdir, x)
os.mkdir(dirname)
self.dirnames.append(dirname)
self.fs = obnamlib.LocalFS(self.tempdir)
self.timeout = 10
self.now = 0
self.lm = obnamlib.LockManager(self.fs, self.timeout, '')
self.lm._time = self.fake_time
self.lm._sleep = lambda: None
def tearDown(self):
shutil.rmtree(self.tempdir)
def test_has_nothing_locked_initially(self):
for dirname in self.dirnames:
self.assertFalse(self.locked(dirname))
def test_locks_single_directory(self):
self.lm.lock([self.dirnames[0]])
self.assertTrue(self.locked(self.dirnames[0]))
def test_unlocks_single_directory(self):
self.lm.lock([self.dirnames[0]])
self.lm.unlock([self.dirnames[0]])
self.assertFalse(self.locked(self.dirnames[0]))
def test_waits_until_timeout_for_locked_directory(self):
self.lm.lock([self.dirnames[0]])
self.assertRaises(obnamlib.LockFail,
self.lm.lock, [self.dirnames[0]])
self.assertTrue(self.now >= self.timeout)
def test_notices_when_preexisting_lock_goes_away(self):
self.lm.lock([self.dirnames[0]])
self.lm._sleep = lambda: os.remove(self.lm._lockname(self.dirnames[0]))
self.lm.lock([self.dirnames[0]])
self.assertTrue(True)
def test_locks_all_directories(self):
self.lm.lock(self.dirnames)
for dirname in self.dirnames:
self.assertTrue(self.locked(dirname))
def test_unlocks_all_directories(self):
self.lm.lock(self.dirnames)
self.lm.unlock(self.dirnames)
for dirname in self.dirnames:
self.assertFalse(self.locked(dirname))
def test_does_not_lock_anything_if_one_lock_fails(self):
self.lm.lock([self.dirnames[-1]])
self.assertRaises(obnamlib.LockFail, self.lm.lock, self.dirnames)
for dirname in self.dirnames[:-1]:
self.assertFalse(self.locked(dirname))
self.assertTrue(self.locked(self.dirnames[-1]))
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