tractor/tests/test_clustering.py

85 lines
1.9 KiB
Python

import itertools
import pytest
import trio
import tractor
from tractor import open_actor_cluster
from tractor.trionics import gather_contexts
from conftest import tractor_test
MESSAGE = 'tractoring at full speed'
def test_empty_mngrs_input_raises() -> None:
async def main():
with trio.fail_after(1):
async with (
open_actor_cluster(
modules=[__name__],
# NOTE: ensure we can passthrough runtime opts
loglevel='info',
# debug_mode=True,
) as portals,
gather_contexts(
# NOTE: it's the use of inline-generator syntax
# here that causes the empty input.
mngrs=(
p.open_context(worker) for p in portals.values()
),
),
):
assert 0
with pytest.raises(ValueError):
trio.run(main)
@tractor.context
async def worker(
ctx: tractor.Context,
) -> None:
await ctx.started()
async with ctx.open_stream(
backpressure=True,
) as stream:
# TODO: this with the below assert causes a hang bug?
# with trio.move_on_after(1):
async for msg in stream:
# do something with msg
print(msg)
assert msg == MESSAGE
# TODO: does this ever cause a hang
# assert 0
@tractor_test
async def test_streaming_to_actor_cluster() -> None:
async with (
open_actor_cluster(modules=[__name__]) as portals,
gather_contexts(
mngrs=[p.open_context(worker) for p in portals.values()],
) as contexts,
gather_contexts(
mngrs=[ctx[0].open_stream() for ctx in contexts],
) as streams,
):
with trio.move_on_after(1):
for stream in itertools.cycle(streams):
await stream.send(MESSAGE)