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from unittest.mock import Mock
from celery.concurrency.gevent import TaskPool, Timer, apply_timeout
gevent_modules = (
'gevent',
'gevent.greenlet',
'gevent.monkey',
'gevent.pool',
'gevent.signal',
)
class test_gevent_patch:
def test_is_patched(self):
self.patching.modules(*gevent_modules)
patch_all = self.patching('gevent.monkey.patch_all')
import gevent
gevent.version_info = (1, 0, 0)
from celery import maybe_patch_concurrency
maybe_patch_concurrency(['x', '-P', 'gevent'])
patch_all.assert_called()
class test_Timer:
def setup_method(self):
self.patching.modules(*gevent_modules)
self.greenlet = self.patching('gevent.greenlet')
self.GreenletExit = self.patching('gevent.greenlet.GreenletExit')
def test_sched(self):
self.greenlet.Greenlet = object
x = Timer()
self.greenlet.Greenlet = Mock()
x._Greenlet.spawn_later = Mock()
x._GreenletExit = KeyError
entry = Mock()
g = x._enter(1, 0, entry)
assert x.queue
x._entry_exit(g)
g.kill.assert_called_with()
assert not x._queue
x._queue.add(g)
x.clear()
x._queue.add(g)
g.kill.side_effect = KeyError()
x.clear()
g = x._Greenlet()
g.cancel()
class test_TaskPool:
def setup_method(self):
self.patching.modules(*gevent_modules)
self.spawn_raw = self.patching('gevent.spawn_raw')
self.Pool = self.patching('gevent.pool.Pool')
def test_pool(self):
x = TaskPool()
x.on_start()
x.on_stop()
x.on_apply(Mock())
x._pool = None
x.on_stop()
x._pool = Mock()
x._pool._semaphore.counter = 1
x._pool.size = 1
x.grow()
assert x._pool.size == 2
assert x._pool._semaphore.counter == 2
x.shrink()
assert x._pool.size, 1
assert x._pool._semaphore.counter == 1
x._pool = [4, 5, 6]
assert x.num_processes == 3
def test_terminate_job(self):
func = Mock()
pool = TaskPool(10)
pool.on_start()
pool.on_apply(func)
assert len(pool._pool_map.keys()) == 1
pid = list(pool._pool_map.keys())[0]
greenlet = pool._pool_map[pid]
greenlet.link.assert_called_once()
pool.terminate_job(pid)
import gevent
gevent.kill.assert_called_once()
def test_make_killable_target(self):
def valid_target():
return "some result..."
def terminating_target():
from greenlet import GreenletExit
raise GreenletExit
assert TaskPool._make_killable_target(valid_target)() == "some result..."
assert TaskPool._make_killable_target(terminating_target)() == (False, None, None)
def test_cleanup_after_job_finish(self):
testMap = {'1': None}
TaskPool._cleanup_after_job_finish(None, testMap, '1')
assert len(testMap) == 0
class test_apply_timeout:
def test_apply_timeout(self):
self.patching.modules(*gevent_modules)
class Timeout(Exception):
value = None
def __init__(self, value):
self.__class__.value = value
def __enter__(self):
return self
def __exit__(self, *exc_info):
pass
timeout_callback = Mock(name='timeout_callback')
apply_target = Mock(name='apply_target')
getpid = Mock(name='getpid')
apply_timeout(
Mock(), timeout=10, callback=Mock(name='callback'),
timeout_callback=timeout_callback, getpid=getpid,
apply_target=apply_target, Timeout=Timeout,
)
assert Timeout.value == 10
apply_target.assert_called()
apply_target.side_effect = Timeout(10)
apply_timeout(
Mock(), timeout=10, callback=Mock(),
timeout_callback=timeout_callback, getpid=getpid,
apply_target=apply_target, Timeout=Timeout,
)
timeout_callback.assert_called_with(False, 10)
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