async def test_workqueue_deduplicates():
q = WorkQueue()
q.put("foo")
q.put("bar")
q.put("foo")
assert await q.get() == "foo"
assert await q.get() == "bar"
assert q.is_empty()
async def test_workqueue_close():
q = WorkQueue()
q.put("foo")
q.close()
with pytest.raises(WorkQueueClosed):
await q.get()
assert q.closed
q = WorkQueue()
fs = [asyncio.ensure_future(q.get()) for _ in range(3)]
done, pending = await asyncio.wait(fs, timeout=0.001)
assert not done
q.close()
for f in fs:
with pytest.raises(WorkQueueClosed):
await f
async def test_workqueue_put_after():
q = WorkQueue()
# Fine if already enqueued
q.put("foo")
q.put_after("foo", 0.001)
assert len(q._queue) == 1
assert q._timers
assert await q.get() == "foo"
# Cannot concurrently process "foo", even though it's scheduled
f = asyncio.ensure_future(q.get())
done, pending = await asyncio.wait([f], timeout=0.005)
assert not done
# But after marking done, can continue processing
q.task_done("foo")
assert q._queue
res = await f
assert res == "foo"
async def test_workqueue_cancellable():
q = WorkQueue()
# No items, blocks
f = asyncio.ensure_future(q.get())
done, pending = await asyncio.wait([f], timeout=0.001)
assert not done
# Cancel the get task, waiter cleaned up
await cancel_task(f)
assert not q._waiting
# No items, blocks
f = asyncio.ensure_future(q.get())
done, pending = await asyncio.wait([f], timeout=0.001)
assert not done
# Cancel after a put, item still available
q.put("foo")
await cancel_task(f)
assert await q.get() == "foo"
async def test_workqueue_no_concurrent_execution():
q = WorkQueue()
q.put("foo")
assert await q.get() == "foo"
assert q.is_empty()
q.put("foo")
assert not q.is_empty()
assert not q._queue
assert "foo" in q._dirty
# Cannot concurrently process "foo", even though it's requeued
f = asyncio.ensure_future(q.get())
done, pending = await asyncio.wait([f], timeout=0.001)
assert not done
# But after marking done, can continue processing
q.task_done("foo")
assert q._queue
res = await f
assert res == "foo"