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rq/tests/test_queue.py

124 lines
3.9 KiB
Python

from tests import RQTestCase
from tests import testjob
from pickle import dumps
from rq import Queue
from rq.exceptions import UnpickleError
class TestQueue(RQTestCase):
def test_create_queue(self):
"""Creating queues."""
q = Queue('my-queue')
self.assertEquals(q.name, 'my-queue')
def test_create_default_queue(self):
"""Instantiating the default queue."""
q = Queue()
self.assertEquals(q.name, 'default')
def test_equality(self):
"""Mathematical equality of queues."""
q1 = Queue('foo')
q2 = Queue('foo')
q3 = Queue('bar')
self.assertEquals(q1, q2)
self.assertEquals(q2, q1)
self.assertNotEquals(q1, q3)
self.assertNotEquals(q2, q3)
def test_queue_empty(self):
"""Detecting empty queues."""
q = Queue('my-queue')
self.assertEquals(q.is_empty(), True)
self.testconn.rpush('rq:queue:my-queue', 'some val')
self.assertEquals(q.is_empty(), False)
def test_enqueue(self):
"""Putting work on queues."""
q = Queue('my-queue')
self.assertEquals(q.is_empty(), True)
# testjob spec holds which queue this is sent to
q.enqueue(testjob, 'Nick', foo='bar')
self.assertEquals(q.is_empty(), False)
for job in q.jobs:
if job.func == testjob:
break
else:
self.fail('Job not found on queue.')
def test_dequeue(self):
"""Fetching work from specific queue."""
q = Queue('foo')
q.enqueue(testjob, 'Rick', foo='bar')
# Pull it off the queue (normally, a worker would do this)
job = q.dequeue()
self.assertEquals(job.func, testjob)
self.assertEquals(job.origin, q)
self.assertEquals(job.args[0], 'Rick')
self.assertEquals(job.kwargs['foo'], 'bar')
def test_dequeue_any(self):
"""Fetching work from any given queue."""
fooq = Queue('foo')
barq = Queue('bar')
self.assertEquals(Queue.dequeue_any([fooq, barq], False), None)
# Enqueue a single item
barq.enqueue(testjob)
job = Queue.dequeue_any([fooq, barq], False)
self.assertEquals(job.func, testjob)
# Enqueue items on both queues
barq.enqueue(testjob, 'for Bar')
fooq.enqueue(testjob, 'for Foo')
job = Queue.dequeue_any([fooq, barq], False)
self.assertEquals(job.func, testjob)
self.assertEquals(job.origin, fooq)
self.assertEquals(job.args[0], 'for Foo', 'Foo should be dequeued first.')
job = Queue.dequeue_any([fooq, barq], False)
self.assertEquals(job.func, testjob)
self.assertEquals(job.origin, barq)
self.assertEquals(job.args[0], 'for Bar', 'Bar should be dequeued second.')
def test_dequeue_unpicklable_data(self):
"""Error handling of invalid pickle data."""
# Push non-pickle data on the queue
q = Queue('foo')
blob = 'this is nothing like pickled data'
self.testconn.rpush(q._key, blob)
with self.assertRaises(UnpickleError):
q.dequeue() # error occurs when perform()'ing
# Push value pickle data, but not representing a job tuple
q = Queue('foo')
blob = dumps('this is pickled, but not a job tuple')
self.testconn.rpush(q._key, blob)
with self.assertRaises(UnpickleError):
q.dequeue() # error occurs when perform()'ing
# Push slightly incorrect pickled data onto the queue (simulate
# a function that can't be imported from the worker)
q = Queue('foo')
job_tuple = dumps((testjob, [], dict(name='Frank'), 'unused'))
blob = job_tuple.replace('testjob', 'fooobar')
self.testconn.rpush(q._key, blob)
with self.assertRaises(UnpickleError):
q.dequeue() # error occurs when dequeue()'ing