55 lines
1.4 KiB
Python
55 lines
1.4 KiB
Python
|
'''
|
||
|
``async with ():`` inlined context-stream cancellation testing.
|
||
|
|
||
|
Verify the we raise errors when streams are opened prior to sync-opening
|
||
|
a ``tractor.Context`` beforehand.
|
||
|
|
||
|
'''
|
||
|
import trio
|
||
|
from trio.lowlevel import current_task
|
||
|
import tractor
|
||
|
|
||
|
|
||
|
@tractor.context
|
||
|
async def never_open_stream(
|
||
|
|
||
|
ctx: tractor.Context,
|
||
|
|
||
|
) -> None:
|
||
|
'''Bidir streaming endpoint which will stream
|
||
|
back any sequence it is sent item-wise.
|
||
|
|
||
|
'''
|
||
|
await ctx.started()
|
||
|
await trio.sleep_forever()
|
||
|
|
||
|
|
||
|
def test_no_far_end_stream_opened():
|
||
|
'''
|
||
|
This should exemplify the bug from:
|
||
|
https://github.com/goodboy/tractor/issues/265
|
||
|
|
||
|
'''
|
||
|
async def main():
|
||
|
async with tractor.open_nursery() as n:
|
||
|
portal = await n.start_actor(
|
||
|
'starts_no_stream',
|
||
|
enable_modules=[__name__],
|
||
|
)
|
||
|
|
||
|
async with (
|
||
|
portal.open_context(
|
||
|
never_open_stream,) as (ctx, sent),
|
||
|
ctx.open_stream() as stream,
|
||
|
):
|
||
|
assert sent is None
|
||
|
|
||
|
# XXX: so the question is whether
|
||
|
# this should error if the far end
|
||
|
# has not yet called `ctx.open_stream()`?
|
||
|
# If we decide to do that we need a synchronization
|
||
|
# message which is sent from that call?
|
||
|
await stream.send('yo')
|
||
|
|
||
|
trio.run(main)
|