/usr/lib/python2.7/dist-packages/celery/tests/concurrency/test_prefork.py is in python-celery 3.1.20-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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import errno
import socket
import time
from itertools import cycle
from celery.five import items, range
from celery.utils.functional import noop
from celery.tests.case import AppCase, Mock, SkipTest, call, patch
try:
from celery.concurrency import prefork as mp
from celery.concurrency import asynpool
except ImportError:
class _mp(object):
RUN = 0x1
class TaskPool(object):
_pool = Mock()
def __init__(self, *args, **kwargs):
pass
def start(self):
pass
def stop(self):
pass
def apply_async(self, *args, **kwargs):
pass
mp = _mp() # noqa
asynpool = None # noqa
class Object(object): # for writeable attributes.
def __init__(self, **kwargs):
[setattr(self, k, v) for k, v in items(kwargs)]
class MockResult(object):
def __init__(self, value, pid):
self.value = value
self.pid = pid
def worker_pids(self):
return [self.pid]
def get(self):
return self.value
class MockPool(object):
started = False
closed = False
joined = False
terminated = False
_state = None
def __init__(self, *args, **kwargs):
self.started = True
self._timeout_handler = Mock()
self._result_handler = Mock()
self.maintain_pool = Mock()
self._state = mp.RUN
self._processes = kwargs.get('processes')
self._pool = [Object(pid=i, inqW_fd=1, outqR_fd=2)
for i in range(self._processes)]
self._current_proc = cycle(range(self._processes))
def close(self):
self.closed = True
self._state = 'CLOSE'
def join(self):
self.joined = True
def terminate(self):
self.terminated = True
def terminate_job(self, *args, **kwargs):
pass
def restart(self, *args, **kwargs):
pass
def handle_result_event(self, *args, **kwargs):
pass
def flush(self):
pass
def grow(self, n=1):
self._processes += n
def shrink(self, n=1):
self._processes -= n
def apply_async(self, *args, **kwargs):
pass
def register_with_event_loop(self, loop):
pass
class ExeMockPool(MockPool):
def apply_async(self, target, args=(), kwargs={}, callback=noop):
from threading import Timer
res = target(*args, **kwargs)
Timer(0.1, callback, (res, )).start()
return MockResult(res, next(self._current_proc))
class TaskPool(mp.TaskPool):
Pool = BlockingPool = MockPool
class ExeMockTaskPool(mp.TaskPool):
Pool = BlockingPool = ExeMockPool
class PoolCase(AppCase):
def setup(self):
try:
import multiprocessing # noqa
except ImportError:
raise SkipTest('multiprocessing not supported')
class test_AsynPool(PoolCase):
def test_gen_not_started(self):
def gen():
yield 1
yield 2
g = gen()
self.assertTrue(asynpool.gen_not_started(g))
next(g)
self.assertFalse(asynpool.gen_not_started(g))
list(g)
self.assertFalse(asynpool.gen_not_started(g))
def test_select(self):
ebadf = socket.error()
ebadf.errno = errno.EBADF
with patch('select.select') as select:
select.return_value = ([3], [], [])
self.assertEqual(
asynpool._select(set([3])),
([3], [], 0),
)
select.return_value = ([], [], [3])
self.assertEqual(
asynpool._select(set([3]), None, set([3])),
([3], [], 0),
)
eintr = socket.error()
eintr.errno = errno.EINTR
select.side_effect = eintr
readers = set([3])
self.assertEqual(asynpool._select(readers), ([], [], 1))
self.assertIn(3, readers)
with patch('select.select') as select:
select.side_effect = ebadf
readers = set([3])
self.assertEqual(asynpool._select(readers), ([], [], 1))
select.assert_has_calls([call([3], [], [], 0)])
self.assertNotIn(3, readers)
with patch('select.select') as select:
select.side_effect = MemoryError()
with self.assertRaises(MemoryError):
asynpool._select(set([1]))
with patch('select.select') as select:
def se(*args):
select.side_effect = MemoryError()
raise ebadf
select.side_effect = se
with self.assertRaises(MemoryError):
asynpool._select(set([3]))
with patch('select.select') as select:
def se2(*args):
select.side_effect = socket.error()
select.side_effect.errno = 1321
raise ebadf
select.side_effect = se2
with self.assertRaises(socket.error):
asynpool._select(set([3]))
with patch('select.select') as select:
select.side_effect = socket.error()
select.side_effect.errno = 34134
with self.assertRaises(socket.error):
asynpool._select(set([3]))
def test_promise(self):
fun = Mock()
x = asynpool.promise(fun, (1, ), {'foo': 1})
x()
self.assertTrue(x.ready)
fun.assert_called_with(1, foo=1)
def test_Worker(self):
w = asynpool.Worker(Mock(), Mock())
w.on_loop_start(1234)
w.outq.put.assert_called_with((asynpool.WORKER_UP, (1234, )))
class test_ResultHandler(PoolCase):
def test_process_result(self):
x = asynpool.ResultHandler(
Mock(), Mock(), {}, Mock(),
Mock(), Mock(), Mock(), Mock(),
fileno_to_outq={},
on_process_alive=Mock(),
on_job_ready=Mock(),
)
self.assertTrue(x)
hub = Mock(name='hub')
recv = x._recv_message = Mock(name='recv_message')
recv.return_value = iter([])
x.on_state_change = Mock()
x.register_with_event_loop(hub)
proc = x.fileno_to_outq[3] = Mock()
reader = proc.outq._reader
reader.poll.return_value = False
x.handle_event(6) # KeyError
x.handle_event(3)
x._recv_message.assert_called_with(
hub.add_reader, 3, x.on_state_change,
)
class test_TaskPool(PoolCase):
def test_start(self):
pool = TaskPool(10)
pool.start()
self.assertTrue(pool._pool.started)
self.assertTrue(pool._pool._state == asynpool.RUN)
_pool = pool._pool
pool.stop()
self.assertTrue(_pool.closed)
self.assertTrue(_pool.joined)
pool.stop()
pool.start()
_pool = pool._pool
pool.terminate()
pool.terminate()
self.assertTrue(_pool.terminated)
def test_apply_async(self):
pool = TaskPool(10)
pool.start()
pool.apply_async(lambda x: x, (2, ), {})
def test_grow_shrink(self):
pool = TaskPool(10)
pool.start()
self.assertEqual(pool._pool._processes, 10)
pool.grow()
self.assertEqual(pool._pool._processes, 11)
pool.shrink(2)
self.assertEqual(pool._pool._processes, 9)
def test_info(self):
pool = TaskPool(10)
procs = [Object(pid=i) for i in range(pool.limit)]
class _Pool(object):
_pool = procs
_maxtasksperchild = None
timeout = 10
soft_timeout = 5
def human_write_stats(self, *args, **kwargs):
return {}
pool._pool = _Pool()
info = pool.info
self.assertEqual(info['max-concurrency'], pool.limit)
self.assertEqual(info['max-tasks-per-child'], 'N/A')
self.assertEqual(info['timeouts'], (5, 10))
def test_num_processes(self):
pool = TaskPool(7)
pool.start()
self.assertEqual(pool.num_processes, 7)
def test_restart(self):
raise SkipTest('functional test')
def get_pids(pool):
return set([p.pid for p in pool._pool._pool])
tp = self.TaskPool(5)
time.sleep(0.5)
tp.start()
pids = get_pids(tp)
tp.restart()
time.sleep(0.5)
self.assertEqual(pids, get_pids(tp))
|