forked from goodboy/tractor
135 lines
3.3 KiB
Python
135 lines
3.3 KiB
Python
"""
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Actor model API testing
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"""
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import time
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import pytest
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import trio
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import tractor
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from conftest import tractor_test
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@pytest.mark.trio
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async def test_no_arbitter():
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"""An arbitter must be established before any nurseries
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can be created.
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(In other words ``tractor.run`` must be used instead of ``trio.run`` as is
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done by the ``pytest-trio`` plugin.)
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"""
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with pytest.raises(RuntimeError):
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with tractor.open_nursery():
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pass
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def test_local_actor_async_func(arb_addr):
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"""Verify a simple async function in-process.
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"""
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nums = []
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async def print_loop():
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# arbiter is started in-proc if dne
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assert tractor.current_actor().is_arbiter
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for i in range(10):
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nums.append(i)
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await trio.sleep(0.1)
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start = time.time()
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tractor.run(print_loop, arbiter_addr=arb_addr)
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# ensure the sleeps were actually awaited
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assert time.time() - start >= 1
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assert nums == list(range(10))
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statespace = {'doggy': 10, 'kitty': 4}
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async def spawn(is_arbiter):
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namespaces = [__name__]
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await trio.sleep(0.1)
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actor = tractor.current_actor()
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assert actor.is_arbiter == is_arbiter
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assert actor.statespace == statespace
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if actor.is_arbiter:
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async with tractor.open_nursery() as nursery:
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# forks here
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portal = await nursery.run_in_actor(
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'sub-actor',
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spawn,
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is_arbiter=False,
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statespace=statespace,
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rpc_module_paths=namespaces,
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)
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assert len(nursery._children) == 1
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assert portal.channel.uid in tractor.current_actor()._peers
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# be sure we can still get the result
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result = await portal.result()
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assert result == 10
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return result
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else:
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return 10
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def test_local_arbiter_subactor_global_state(arb_addr):
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result = tractor.run(
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spawn,
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True,
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name='arbiter',
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statespace=statespace,
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arbiter_addr=arb_addr,
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)
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assert result == 10
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def movie_theatre_question():
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"""A question asked in a dark theatre, in a tangent
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(errr, I mean different) process.
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"""
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return 'have you ever seen a portal?'
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@tractor_test
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async def test_movie_theatre_convo():
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"""The main ``tractor`` routine.
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"""
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async with tractor.open_nursery() as n:
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portal = await n.start_actor(
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'frank',
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# enable the actor to run funcs from this current module
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rpc_module_paths=[__name__],
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)
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print(await portal.run(__name__, 'movie_theatre_question'))
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# call the subactor a 2nd time
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print(await portal.run(__name__, 'movie_theatre_question'))
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# the async with will block here indefinitely waiting
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# for our actor "frank" to complete, we cancel 'frank'
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# to avoid blocking indefinitely
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await portal.cancel_actor()
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def cellar_door():
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return "Dang that's beautiful"
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@tractor_test
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async def test_most_beautiful_word():
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"""The main ``tractor`` routine.
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"""
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async with tractor.open_nursery() as n:
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portal = await n.run_in_actor('some_linguist', cellar_door)
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# The ``async with`` will unblock here since the 'some_linguist'
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# actor has completed its main task ``cellar_door``.
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print(await portal.result())
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