/usr/lib/python3/dist-packages/celery/tests/tasks/test_tasks.py is in python3-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 datetime import datetime, timedelta
from kombu import Queue
from celery import Task
from celery.exceptions import Retry
from celery.five import items, range, string_t
from celery.result import EagerResult
from celery.utils import uuid
from celery.utils.timeutils import parse_iso8601
from celery.tests.case import AppCase, depends_on_current_app, patch
def return_True(*args, **kwargs):
# Task run functions can't be closures/lambdas, as they're pickled.
return True
def raise_exception(self, **kwargs):
raise Exception('%s error' % self.__class__)
class MockApplyTask(Task):
abstract = True
applied = 0
def run(self, x, y):
return x * y
def apply_async(self, *args, **kwargs):
self.applied += 1
class TasksCase(AppCase):
def setup(self):
self.mytask = self.app.task(shared=False)(return_True)
@self.app.task(bind=True, count=0, shared=False)
def increment_counter(self, increment_by=1):
self.count += increment_by or 1
return self.count
self.increment_counter = increment_counter
@self.app.task(shared=False)
def raising():
raise KeyError('foo')
self.raising = raising
@self.app.task(bind=True, max_retries=3, iterations=0, shared=False)
def retry_task(self, arg1, arg2, kwarg=1, max_retries=None, care=True):
self.iterations += 1
rmax = self.max_retries if max_retries is None else max_retries
assert repr(self.request)
retries = self.request.retries
if care and retries >= rmax:
return arg1
else:
raise self.retry(countdown=0, max_retries=rmax)
self.retry_task = retry_task
@self.app.task(bind=True, max_retries=3, iterations=0, shared=False)
def retry_task_noargs(self, **kwargs):
self.iterations += 1
if self.request.retries >= 3:
return 42
else:
raise self.retry(countdown=0)
self.retry_task_noargs = retry_task_noargs
@self.app.task(bind=True, max_retries=3, iterations=0,
base=MockApplyTask, shared=False)
def retry_task_mockapply(self, arg1, arg2, kwarg=1):
self.iterations += 1
retries = self.request.retries
if retries >= 3:
return arg1
raise self.retry(countdown=0)
self.retry_task_mockapply = retry_task_mockapply
@self.app.task(bind=True, max_retries=3, iterations=0, shared=False)
def retry_task_customexc(self, arg1, arg2, kwarg=1, **kwargs):
self.iterations += 1
retries = self.request.retries
if retries >= 3:
return arg1 + kwarg
else:
try:
raise MyCustomException('Elaine Marie Benes')
except MyCustomException as exc:
kwargs.update(kwarg=kwarg)
raise self.retry(countdown=0, exc=exc)
self.retry_task_customexc = retry_task_customexc
class MyCustomException(Exception):
"""Random custom exception."""
class test_task_retries(TasksCase):
def test_retry(self):
self.retry_task.max_retries = 3
self.retry_task.iterations = 0
self.retry_task.apply([0xFF, 0xFFFF])
self.assertEqual(self.retry_task.iterations, 4)
self.retry_task.max_retries = 3
self.retry_task.iterations = 0
self.retry_task.apply([0xFF, 0xFFFF], {'max_retries': 10})
self.assertEqual(self.retry_task.iterations, 11)
def test_retry_no_args(self):
self.retry_task_noargs.max_retries = 3
self.retry_task_noargs.iterations = 0
self.retry_task_noargs.apply(propagate=True).get()
self.assertEqual(self.retry_task_noargs.iterations, 4)
def test_retry_kwargs_can_be_empty(self):
self.retry_task_mockapply.push_request()
try:
with self.assertRaises(Retry):
import sys
try:
sys.exc_clear()
except AttributeError:
pass
self.retry_task_mockapply.retry(args=[4, 4], kwargs=None)
finally:
self.retry_task_mockapply.pop_request()
def test_retry_not_eager(self):
self.retry_task_mockapply.push_request()
try:
self.retry_task_mockapply.request.called_directly = False
exc = Exception('baz')
try:
self.retry_task_mockapply.retry(
args=[4, 4], kwargs={'task_retries': 0},
exc=exc, throw=False,
)
self.assertTrue(self.retry_task_mockapply.applied)
finally:
self.retry_task_mockapply.applied = 0
try:
with self.assertRaises(Retry):
self.retry_task_mockapply.retry(
args=[4, 4], kwargs={'task_retries': 0},
exc=exc, throw=True)
self.assertTrue(self.retry_task_mockapply.applied)
finally:
self.retry_task_mockapply.applied = 0
finally:
self.retry_task_mockapply.pop_request()
def test_retry_with_kwargs(self):
self.retry_task_customexc.max_retries = 3
self.retry_task_customexc.iterations = 0
self.retry_task_customexc.apply([0xFF, 0xFFFF], {'kwarg': 0xF})
self.assertEqual(self.retry_task_customexc.iterations, 4)
def test_retry_with_custom_exception(self):
self.retry_task_customexc.max_retries = 2
self.retry_task_customexc.iterations = 0
result = self.retry_task_customexc.apply(
[0xFF, 0xFFFF], {'kwarg': 0xF},
)
with self.assertRaises(MyCustomException):
result.get()
self.assertEqual(self.retry_task_customexc.iterations, 3)
def test_max_retries_exceeded(self):
self.retry_task.max_retries = 2
self.retry_task.iterations = 0
result = self.retry_task.apply([0xFF, 0xFFFF], {'care': False})
with self.assertRaises(self.retry_task.MaxRetriesExceededError):
result.get()
self.assertEqual(self.retry_task.iterations, 3)
self.retry_task.max_retries = 1
self.retry_task.iterations = 0
result = self.retry_task.apply([0xFF, 0xFFFF], {'care': False})
with self.assertRaises(self.retry_task.MaxRetriesExceededError):
result.get()
self.assertEqual(self.retry_task.iterations, 2)
class test_canvas_utils(TasksCase):
def test_si(self):
self.assertTrue(self.retry_task.si())
self.assertTrue(self.retry_task.si().immutable)
def test_chunks(self):
self.assertTrue(self.retry_task.chunks(range(100), 10))
def test_map(self):
self.assertTrue(self.retry_task.map(range(100)))
def test_starmap(self):
self.assertTrue(self.retry_task.starmap(range(100)))
def test_on_success(self):
self.retry_task.on_success(1, 1, (), {})
class test_tasks(TasksCase):
def now(self):
return self.app.now()
@depends_on_current_app
def test_unpickle_task(self):
import pickle
@self.app.task(shared=True)
def xxx():
pass
self.assertIs(pickle.loads(pickle.dumps(xxx)), xxx.app.tasks[xxx.name])
def test_AsyncResult(self):
task_id = uuid()
result = self.retry_task.AsyncResult(task_id)
self.assertEqual(result.backend, self.retry_task.backend)
self.assertEqual(result.id, task_id)
def assertNextTaskDataEqual(self, consumer, presult, task_name,
test_eta=False, test_expires=False, **kwargs):
next_task = consumer.queues[0].get(accept=['pickle'])
task_data = next_task.decode()
self.assertEqual(task_data['id'], presult.id)
self.assertEqual(task_data['task'], task_name)
task_kwargs = task_data.get('kwargs', {})
if test_eta:
self.assertIsInstance(task_data.get('eta'), string_t)
to_datetime = parse_iso8601(task_data.get('eta'))
self.assertIsInstance(to_datetime, datetime)
if test_expires:
self.assertIsInstance(task_data.get('expires'), string_t)
to_datetime = parse_iso8601(task_data.get('expires'))
self.assertIsInstance(to_datetime, datetime)
for arg_name, arg_value in items(kwargs):
self.assertEqual(task_kwargs.get(arg_name), arg_value)
def test_incomplete_task_cls(self):
class IncompleteTask(Task):
app = self.app
name = 'c.unittest.t.itask'
with self.assertRaises(NotImplementedError):
IncompleteTask().run()
def test_task_kwargs_must_be_dictionary(self):
with self.assertRaises(ValueError):
self.increment_counter.apply_async([], 'str')
def test_task_args_must_be_list(self):
with self.assertRaises(ValueError):
self.increment_counter.apply_async('str', {})
def test_regular_task(self):
self.assertIsInstance(self.mytask, Task)
self.assertTrue(self.mytask.run())
self.assertTrue(
callable(self.mytask), 'Task class is callable()',
)
self.assertTrue(self.mytask(), 'Task class runs run() when called')
with self.app.connection_or_acquire() as conn:
consumer = self.app.amqp.TaskConsumer(conn)
with self.assertRaises(NotImplementedError):
consumer.receive('foo', 'foo')
consumer.purge()
self.assertIsNone(consumer.queues[0].get())
self.app.amqp.TaskConsumer(conn, queues=[Queue('foo')])
# Without arguments.
presult = self.mytask.delay()
self.assertNextTaskDataEqual(consumer, presult, self.mytask.name)
# With arguments.
presult2 = self.mytask.apply_async(
kwargs=dict(name='George Costanza'),
)
self.assertNextTaskDataEqual(
consumer, presult2, self.mytask.name, name='George Costanza',
)
# send_task
sresult = self.app.send_task(self.mytask.name,
kwargs=dict(name='Elaine M. Benes'))
self.assertNextTaskDataEqual(
consumer, sresult, self.mytask.name, name='Elaine M. Benes',
)
# With eta.
presult2 = self.mytask.apply_async(
kwargs=dict(name='George Costanza'),
eta=self.now() + timedelta(days=1),
expires=self.now() + timedelta(days=2),
)
self.assertNextTaskDataEqual(
consumer, presult2, self.mytask.name,
name='George Costanza', test_eta=True, test_expires=True,
)
# With countdown.
presult2 = self.mytask.apply_async(
kwargs=dict(name='George Costanza'), countdown=10, expires=12,
)
self.assertNextTaskDataEqual(
consumer, presult2, self.mytask.name,
name='George Costanza', test_eta=True, test_expires=True,
)
# Discarding all tasks.
consumer.purge()
self.mytask.apply_async()
self.assertEqual(consumer.purge(), 1)
self.assertIsNone(consumer.queues[0].get())
self.assertFalse(presult.successful())
self.mytask.backend.mark_as_done(presult.id, result=None)
self.assertTrue(presult.successful())
def test_repr_v2_compat(self):
self.mytask.__v2_compat__ = True
self.assertIn('v2 compatible', repr(self.mytask))
def test_apply_with_self(self):
@self.app.task(__self__=42, shared=False)
def tawself(self):
return self
self.assertEqual(tawself.apply().get(), 42)
self.assertEqual(tawself(), 42)
def test_context_get(self):
self.mytask.push_request()
try:
request = self.mytask.request
request.foo = 32
self.assertEqual(request.get('foo'), 32)
self.assertEqual(request.get('bar', 36), 36)
request.clear()
finally:
self.mytask.pop_request()
def test_task_class_repr(self):
self.assertIn('class Task of', repr(self.mytask.app.Task))
self.mytask.app.Task._app = None
self.assertIn('unbound', repr(self.mytask.app.Task, ))
def test_bind_no_magic_kwargs(self):
self.mytask.accept_magic_kwargs = None
self.mytask.bind(self.mytask.app)
def test_annotate(self):
with patch('celery.app.task.resolve_all_annotations') as anno:
anno.return_value = [{'FOO': 'BAR'}]
@self.app.task(shared=False)
def task():
pass
task.annotate()
self.assertEqual(task.FOO, 'BAR')
def test_after_return(self):
self.mytask.push_request()
try:
self.mytask.request.chord = self.mytask.s()
self.mytask.after_return('SUCCESS', 1.0, 'foobar', (), {}, None)
self.mytask.request.clear()
finally:
self.mytask.pop_request()
def test_send_task_sent_event(self):
with self.app.connection() as conn:
self.app.conf.CELERY_SEND_TASK_SENT_EVENT = True
self.assertTrue(self.app.amqp.TaskProducer(conn).send_sent_event)
def test_update_state(self):
@self.app.task(shared=False)
def yyy():
pass
yyy.push_request()
try:
tid = uuid()
yyy.update_state(tid, 'FROBULATING', {'fooz': 'baaz'})
self.assertEqual(yyy.AsyncResult(tid).status, 'FROBULATING')
self.assertDictEqual(yyy.AsyncResult(tid).result, {'fooz': 'baaz'})
yyy.request.id = tid
yyy.update_state(state='FROBUZATING', meta={'fooz': 'baaz'})
self.assertEqual(yyy.AsyncResult(tid).status, 'FROBUZATING')
self.assertDictEqual(yyy.AsyncResult(tid).result, {'fooz': 'baaz'})
finally:
yyy.pop_request()
def test_repr(self):
@self.app.task(shared=False)
def task_test_repr():
pass
self.assertIn('task_test_repr', repr(task_test_repr))
def test_has___name__(self):
@self.app.task(shared=False)
def yyy2():
pass
self.assertTrue(yyy2.__name__)
class test_apply_task(TasksCase):
def test_apply_throw(self):
with self.assertRaises(KeyError):
self.raising.apply(throw=True)
def test_apply_with_CELERY_EAGER_PROPAGATES_EXCEPTIONS(self):
self.app.conf.CELERY_EAGER_PROPAGATES_EXCEPTIONS = True
with self.assertRaises(KeyError):
self.raising.apply()
def test_apply(self):
self.increment_counter.count = 0
e = self.increment_counter.apply()
self.assertIsInstance(e, EagerResult)
self.assertEqual(e.get(), 1)
e = self.increment_counter.apply(args=[1])
self.assertEqual(e.get(), 2)
e = self.increment_counter.apply(kwargs={'increment_by': 4})
self.assertEqual(e.get(), 6)
self.assertTrue(e.successful())
self.assertTrue(e.ready())
self.assertTrue(repr(e).startswith('<EagerResult:'))
f = self.raising.apply()
self.assertTrue(f.ready())
self.assertFalse(f.successful())
self.assertTrue(f.traceback)
with self.assertRaises(KeyError):
f.get()
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