/usr/lib/python2.7/dist-packages/celery/tests/worker/test_hub.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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from kombu.async import Hub, READ, WRITE, ERR
from kombu.async.debug import callback_for, repr_flag, _rcb
from kombu.async.semaphore import DummyLock, LaxBoundedSemaphore
from celery.five import range
from celery.tests.case import Case, Mock, call, patch
class File(object):
def __init__(self, fd):
self.fd = fd
def fileno(self):
return self.fd
def __eq__(self, other):
if isinstance(other, File):
return self.fd == other.fd
return NotImplemented
def __hash__(self):
return hash(self.fd)
class test_DummyLock(Case):
def test_context(self):
mutex = DummyLock()
with mutex:
pass
class test_LaxBoundedSemaphore(Case):
def test_acquire_release(self):
x = LaxBoundedSemaphore(2)
c1 = Mock()
x.acquire(c1, 1)
self.assertEqual(x.value, 1)
c1.assert_called_with(1)
c2 = Mock()
x.acquire(c2, 2)
self.assertEqual(x.value, 0)
c2.assert_called_with(2)
c3 = Mock()
x.acquire(c3, 3)
self.assertEqual(x.value, 0)
self.assertFalse(c3.called)
x.release()
self.assertEqual(x.value, 0)
x.release()
self.assertEqual(x.value, 1)
x.release()
self.assertEqual(x.value, 2)
c3.assert_called_with(3)
def test_bounded(self):
x = LaxBoundedSemaphore(2)
for i in range(100):
x.release()
self.assertEqual(x.value, 2)
def test_grow_shrink(self):
x = LaxBoundedSemaphore(1)
self.assertEqual(x.initial_value, 1)
cb1 = Mock()
x.acquire(cb1, 1)
cb1.assert_called_with(1)
self.assertEqual(x.value, 0)
cb2 = Mock()
x.acquire(cb2, 2)
self.assertFalse(cb2.called)
self.assertEqual(x.value, 0)
cb3 = Mock()
x.acquire(cb3, 3)
self.assertFalse(cb3.called)
x.grow(2)
cb2.assert_called_with(2)
cb3.assert_called_with(3)
self.assertEqual(x.value, 2)
self.assertEqual(x.initial_value, 3)
self.assertFalse(x._waiting)
x.grow(3)
for i in range(x.initial_value):
self.assertTrue(x.acquire(Mock()))
self.assertFalse(x.acquire(Mock()))
x.clear()
x.shrink(3)
for i in range(x.initial_value):
self.assertTrue(x.acquire(Mock()))
self.assertFalse(x.acquire(Mock()))
self.assertEqual(x.value, 0)
for i in range(100):
x.release()
self.assertEqual(x.value, x.initial_value)
def test_clear(self):
x = LaxBoundedSemaphore(10)
for i in range(11):
x.acquire(Mock())
self.assertTrue(x._waiting)
self.assertEqual(x.value, 0)
x.clear()
self.assertFalse(x._waiting)
self.assertEqual(x.value, x.initial_value)
class test_Hub(Case):
def test_repr_flag(self):
self.assertEqual(repr_flag(READ), 'R')
self.assertEqual(repr_flag(WRITE), 'W')
self.assertEqual(repr_flag(ERR), '!')
self.assertEqual(repr_flag(READ | WRITE), 'RW')
self.assertEqual(repr_flag(READ | ERR), 'R!')
self.assertEqual(repr_flag(WRITE | ERR), 'W!')
self.assertEqual(repr_flag(READ | WRITE | ERR), 'RW!')
def test_repr_callback_rcb(self):
def f():
pass
self.assertEqual(_rcb(f), f.__name__)
self.assertEqual(_rcb('foo'), 'foo')
@patch('kombu.async.hub.poll')
def test_start_stop(self, poll):
hub = Hub()
poll.assert_called_with()
poller = hub.poller
hub.stop()
hub.close()
poller.close.assert_called_with()
def test_fire_timers(self):
hub = Hub()
hub.timer = Mock()
hub.timer._queue = []
self.assertEqual(hub.fire_timers(min_delay=42.324,
max_delay=32.321), 32.321)
hub.timer._queue = [1]
hub.scheduler = iter([(3.743, None)])
self.assertEqual(hub.fire_timers(), 3.743)
e1, e2, e3 = Mock(), Mock(), Mock()
entries = [e1, e2, e3]
def reset():
return [m.reset() for m in [e1, e2, e3]]
def se():
while 1:
while entries:
yield None, entries.pop()
yield 3.982, None
hub.scheduler = se()
self.assertEqual(hub.fire_timers(max_timers=10), 3.982)
for E in [e3, e2, e1]:
E.assert_called_with()
reset()
entries[:] = [Mock() for _ in range(11)]
keep = list(entries)
self.assertEqual(hub.fire_timers(max_timers=10, min_delay=1.13), 1.13)
for E in reversed(keep[1:]):
E.assert_called_with()
reset()
self.assertEqual(hub.fire_timers(max_timers=10), 3.982)
keep[0].assert_called_with()
def test_fire_timers_raises(self):
hub = Hub()
eback = Mock()
eback.side_effect = KeyError('foo')
hub.timer = Mock()
hub.scheduler = iter([(0, eback)])
with self.assertRaises(KeyError):
hub.fire_timers(propagate=(KeyError, ))
eback.side_effect = ValueError('foo')
hub.scheduler = iter([(0, eback)])
with patch('kombu.async.hub.logger') as logger:
with self.assertRaises(StopIteration):
hub.fire_timers()
self.assertTrue(logger.error.called)
def test_add_raises_ValueError(self):
hub = Hub()
hub.poller = Mock(name='hub.poller')
hub.poller.register.side_effect = ValueError()
hub._discard = Mock(name='hub.discard')
with self.assertRaises(ValueError):
hub.add(2, Mock(), READ)
hub._discard.assert_called_with(2)
def test_repr_active(self):
hub = Hub()
hub.readers = {1: Mock(), 2: Mock()}
hub.writers = {3: Mock(), 4: Mock()}
for value in list(hub.readers.values()) + list(hub.writers.values()):
value.__name__ = 'mock'
self.assertTrue(hub.repr_active())
def test_repr_events(self):
hub = Hub()
hub.readers = {6: Mock(), 7: Mock(), 8: Mock()}
hub.writers = {9: Mock()}
for value in list(hub.readers.values()) + list(hub.writers.values()):
value.__name__ = 'mock'
self.assertTrue(hub.repr_events([
(6, READ),
(7, ERR),
(8, READ | ERR),
(9, WRITE),
(10, 13213),
]))
def test_callback_for(self):
hub = Hub()
reader, writer = Mock(), Mock()
hub.readers = {6: reader}
hub.writers = {7: writer}
self.assertEqual(callback_for(hub, 6, READ), reader)
self.assertEqual(callback_for(hub, 7, WRITE), writer)
with self.assertRaises(KeyError):
callback_for(hub, 6, WRITE)
self.assertEqual(callback_for(hub, 6, WRITE, 'foo'), 'foo')
def test_add_remove_readers(self):
hub = Hub()
P = hub.poller = Mock()
read_A = Mock()
read_B = Mock()
hub.add_reader(10, read_A, 10)
hub.add_reader(File(11), read_B, 11)
P.register.assert_has_calls([
call(10, hub.READ | hub.ERR),
call(11, hub.READ | hub.ERR),
], any_order=True)
self.assertEqual(hub.readers[10], (read_A, (10, )))
self.assertEqual(hub.readers[11], (read_B, (11, )))
hub.remove(10)
self.assertNotIn(10, hub.readers)
hub.remove(File(11))
self.assertNotIn(11, hub.readers)
P.unregister.assert_has_calls([
call(10), call(11),
])
def test_can_remove_unknown_fds(self):
hub = Hub()
hub.poller = Mock()
hub.remove(30)
hub.remove(File(301))
def test_remove__unregister_raises(self):
hub = Hub()
hub.poller = Mock()
hub.poller.unregister.side_effect = OSError()
hub.remove(313)
def test_add_writers(self):
hub = Hub()
P = hub.poller = Mock()
write_A = Mock()
write_B = Mock()
hub.add_writer(20, write_A)
hub.add_writer(File(21), write_B)
P.register.assert_has_calls([
call(20, hub.WRITE),
call(21, hub.WRITE),
], any_order=True)
self.assertEqual(hub.writers[20], (write_A, ()))
self.assertEqual(hub.writers[21], (write_B, ()))
hub.remove(20)
self.assertNotIn(20, hub.writers)
hub.remove(File(21))
self.assertNotIn(21, hub.writers)
P.unregister.assert_has_calls([
call(20), call(21),
])
def test_enter__exit(self):
hub = Hub()
P = hub.poller = Mock()
on_close = Mock()
hub.on_close.add(on_close)
try:
read_A = Mock()
read_B = Mock()
hub.add_reader(10, read_A)
hub.add_reader(File(11), read_B)
write_A = Mock()
write_B = Mock()
hub.add_writer(20, write_A)
hub.add_writer(File(21), write_B)
self.assertTrue(hub.readers)
self.assertTrue(hub.writers)
finally:
assert hub.poller
hub.close()
self.assertFalse(hub.readers)
self.assertFalse(hub.writers)
P.unregister.assert_has_calls([
call(10), call(11), call(20), call(21),
], any_order=True)
on_close.assert_called_with(hub)
def test_scheduler_property(self):
hub = Hub(timer=[1, 2, 3])
self.assertEqual(list(hub.scheduler), [1, 2, 3])
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