def test_uncleanlyAcquire(self):
"""
If a lock was held by a process which no longer exists, it can be
acquired, the C{clean} attribute is set to C{False}, and the
C{locked} attribute is set to C{True}.
"""
owner = 12345
def fakeKill(pid, signal):
if signal != 0:
raise OSError(errno.EPERM, None)
if pid == owner:
raise OSError(errno.ESRCH, None)
lockf = self.mktemp()
self.patch(lockfile, 'kill', fakeKill)
lockfile.symlink(str(owner), lockf)
lock = lockfile.FilesystemLock(lockf)
self.assertTrue(lock.lock())
self.assertFalse(lock.clean)
self.assertTrue(lock.locked)
self.assertEqual(lockfile.readlink(lockf), str(os.getpid()))
def fakeReadlink(name):
# Pretend to be another process releasing the lock.
lockfile.rmlink(lockf)
# Fall back to the real implementation of readlink.
readlinkPatch.restore()
return lockfile.readlink(name)
def fakeReadlink(name):
# Pretend to be another process releasing the lock.
lockfile.rmlink(lockf)
# Fall back to the real implementation of readlink.
readlinkPatch.restore()
return lockfile.readlink(name)
