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Copy pathtest_celery.py
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68 lines (45 loc) · 1.9 KB
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"""Celery adapter — from_celery bridge + worker bootstep.
Skips unless ``celery`` is installed (``pip install "babelqueue[celery]"``). Uses
Celery's ``memory://`` broker, so no external broker is required.
"""
from __future__ import annotations
import unittest
try:
import celery # noqa: F401
HAS_CELERY = True
except ImportError:
HAS_CELERY = False
from babelqueue import BabelQueue, BabelQueueError
@unittest.skipUnless(HAS_CELERY, "celery is not installed")
class CeleryAdapterTest(unittest.TestCase):
def _celery_app(self):
from celery import Celery
return Celery("test", broker="memory://")
def test_from_celery_builds_runtime_on_the_celery_broker(self) -> None:
from babelqueue.celery import from_celery
app = from_celery(self._celery_app(), queue="orders")
self.assertIsInstance(app, BabelQueue)
self.assertEqual(app.queue, "orders")
seen = {}
@app.handler("urn:babel:orders:created")
def handle(data, meta): # noqa: ANN001
seen["data"] = data
app.publish("urn:babel:orders:created", {"order_id": 1})
processed = app.consume(max_messages=1)
self.assertEqual(processed, 1)
self.assertEqual(seen["data"], {"order_id": 1})
def test_from_celery_requires_a_broker(self) -> None:
from celery import Celery
from babelqueue.celery import from_celery
app = Celery("test") # no broker
app.conf.broker_url = None
with self.assertRaises(BabelQueueError):
from_celery(app)
def test_install_worker_registers_a_bootstep(self) -> None:
from babelqueue.celery import from_celery, install_worker
celery_app = self._celery_app()
babel = from_celery(celery_app)
step = install_worker(celery_app, babel)
self.assertIn(step, celery_app.steps["worker"])
if __name__ == "__main__":
unittest.main()