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tractor/tests/test_spawning.py

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"""
Spawning basics
"""
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import trio
import tractor
from conftest import tractor_test
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statespace = {'doggy': 10, 'kitty': 4}
async def spawn(is_arbiter):
namespaces = [__name__]
await trio.sleep(0.1)
actor = tractor.current_actor()
assert actor.is_arbiter == is_arbiter
assert actor.statespace == statespace
if actor.is_arbiter:
async with tractor.open_nursery() as nursery:
# forks here
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portal = await nursery.run_in_actor(
'sub-actor',
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spawn,
is_arbiter=False,
statespace=statespace,
rpc_module_paths=namespaces,
)
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assert len(nursery._children) == 1
assert portal.channel.uid in tractor.current_actor()._peers
# be sure we can still get the result
result = await portal.result()
assert result == 10
return result
else:
return 10
def test_local_arbiter_subactor_global_state(arb_addr):
result = tractor.run(
spawn,
True,
name='arbiter',
statespace=statespace,
arbiter_addr=arb_addr,
)
assert result == 10
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def movie_theatre_question():
"""A question asked in a dark theatre, in a tangent
(errr, I mean different) process.
"""
return 'have you ever seen a portal?'
@tractor_test
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async def test_movie_theatre_convo(start_method):
"""The main ``tractor`` routine.
"""
async with tractor.open_nursery() as n:
portal = await n.start_actor(
'frank',
# enable the actor to run funcs from this current module
rpc_module_paths=[__name__],
)
print(await portal.run(__name__, 'movie_theatre_question'))
# call the subactor a 2nd time
print(await portal.run(__name__, 'movie_theatre_question'))
# the async with will block here indefinitely waiting
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# for our actor "frank" to complete, we cancel 'frank'
# to avoid blocking indefinitely
await portal.cancel_actor()
def cellar_door():
return "Dang that's beautiful"
@tractor_test
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async def test_most_beautiful_word(start_method):
"""The main ``tractor`` routine.
"""
async with tractor.open_nursery() as n:
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portal = await n.run_in_actor('some_linguist', cellar_door)
# The ``async with`` will unblock here since the 'some_linguist'
# actor has completed its main task ``cellar_door``.
print(await portal.result())