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314 Commits (7548dba8f240a170aca15ea03c445ca335ab6064)

Author SHA1 Message Date
Tyler Goodlet 4f222a5f9c Use type match of expected error 2021-10-15 10:25:50 -04:00
Tyler Goodlet 533457c64d Handle nested multierror case on windows 2021-10-15 09:16:51 -04:00
Tyler Goodlet 7ee121aeaf Try to handle variable windows errors 2021-10-14 13:39:46 -04:00
Tyler Goodlet b14699d40b Adjust debugger tests to expect depth > 1 crashes 
With the new fixes to the trio spawner we can expect that both root
*and* depth > 1 nursery owning actors will now not clobber any children
that are in debug (either via breakpoint or through crashing). The tests
changed now include more checks which ensure the 2nd level parent-ish
actors also bubble up through into `pdb` and don't kill any of their
(crashed) children before they're done themselves debugging.
 2021-10-14 13:39:46 -04:00
Tyler Goodlet 2df16c1557 Lol, fix sub-actor case 2021-10-14 13:39:46 -04:00
Tyler Goodlet 5b23a3bc35 Don't expect list value from registry 2021-10-05 13:37:17 -04:00
Tyler Goodlet 19d6885243 Ensure tuple for passed in arbiter addr 2021-10-05 13:37:17 -04:00
Tyler Goodlet 93726f1392 Call registry getter method in test 2021-10-05 13:37:17 -04:00
Tyler Goodlet 4f831abe25 Hipshot, try to avoid subs teardown race 2021-10-05 12:19:24 -04:00
Tyler Goodlet b1235442fb Add longer timeout on windows 2021-10-04 12:10:39 -04:00
Tyler Goodlet d734dcede4 Accept a multierror on cancellation (windows?) 2021-10-04 11:43:50 -04:00
Tyler Goodlet 8d79d83ac2 Ensure kbi will cancel context block 
Follow up to previous commit: extend our simple context test set to
include cancellation via kbi in the parent as well as timeout logic and
testing of the parent opening a stream even though the target actor does
not.

Thanks again to https://github.com/adder46/wrath for discovering this
bug.
 2021-10-04 10:38:26 -04:00
Tyler Goodlet c1727ce05e Add a test of both stream styles side-by-side 
Not sure we even have a test for this yet. The main issue discovered by
a user project (https://github.com/adder46/wrath) was that a kbi raised
inside a block like this (with both recv-only and send-recv streams)
would not cancel on the first ctrl-c sent from console and instead
SIGiNT had to be repeatedly sent as many times as there are subactors in
the first level tree. This test catches that as well as just verifies
the basic side-by-side functionality.
 2021-10-04 10:38:22 -04:00
Tyler Goodlet 5881a82d2a Add a first receiver is cancelled test 2021-09-02 21:12:54 -04:00
Tyler Goodlet b7b489dd07 Drop shielded stream api usage 2021-09-02 21:12:54 -04:00
Tyler Goodlet 5c6355062c Shorten sequence length for test speedup 2021-09-02 21:12:54 -04:00
Tyler Goodlet d9e793d4ba Can't use built-in generics till 3.9... 2021-09-02 21:12:54 -04:00
Tyler Goodlet 5182ee7782 Add a "faster task is cancelled" test 2021-09-02 21:12:54 -04:00
Tyler Goodlet 39cf9af9fc Rename test module 2021-09-02 21:12:54 -04:00
Tyler Goodlet 0d70e3081a Add laggy parent stream tests 
Add a couple more tests to check that a parent and sub-task stream can
be lagged and recovered (depending on who's slower). Factor some of the
test machinery into a new ctx mngr to make it all happen.
 2021-09-02 21:12:54 -04:00
Tyler Goodlet d7ad8982ff Add subscribe after close test 2021-09-02 21:12:54 -04:00
Tyler Goodlet 2bad2bac50 Don't enable debug mode..it borks CI 2021-09-02 21:12:54 -04:00
Tyler Goodlet 236ed0b0dd Initial broadcaster tests including one to test our `MsgStream.subscribe()` api 2021-09-02 21:12:54 -04:00
Tyler Goodlet af85d35685 Drop stream shielding; it was from a legacy design 
The whole origin was not having an explicit open/close semantic for
streams. We have that now so this internal mechanic isn't needed and
further our streams become more correct by having `.aclose()` be
independent of cancellation.
 2021-09-02 08:24:18 -04:00
Tyler Goodlet c5c7e694ec Better early timeout handling, continue on child re-lock 2021-08-01 13:10:51 -04:00
Tyler Goodlet 674fbbc6b3 Docs and comments tidying 2021-08-01 10:44:13 -04:00
Tyler Goodlet f173012fea Handle repeat child tty-acquires race 2021-07-31 15:01:26 -04:00
Tyler Goodlet 13b76c9439 Add fast fail test using the context api 2021-07-31 12:46:40 -04:00
Tyler Goodlet 632c666a7d Adjust debug tests to accomodate no more root clobbering 
We may get multiple re-entries to debugger by `bp_forever` sub-actor
now since the root will incrementally try to cancel it only when the tty
lock is not held.
 2021-07-31 12:46:40 -04:00
Tyler Goodlet 240f591234 Add 2-way streaming example to readme and scripts 2021-07-31 12:10:25 -04:00
Tyler Goodlet 929b6dcc83 Skip debugger tests on windows at module level 2021-07-06 13:26:30 -04:00
Tyler Goodlet a134bc490f Avoid mutate during interate error 2021-07-06 08:23:30 -04:00
Tyler Goodlet 0623de0b47 Expect context cancelled when we cancel 2021-07-06 08:23:30 -04:00
Tyler Goodlet 8eb889a745 Modernize streaming tests 2021-07-06 08:23:29 -04:00
Tyler Goodlet 349d82d182 Speedup the dynamic pubsub test 2021-07-06 08:23:29 -04:00
Tyler Goodlet 7c5fd8ce9f Add detailed ``@tractor.context`` cancellation/termination tests 2021-07-06 08:23:29 -04:00
Tyler Goodlet 3999849b03 Add a multi-task streaming test 2021-07-06 08:23:29 -04:00
Tyler Goodlet 5b8b7d374a Add error case 2021-07-06 08:23:29 -04:00
Tyler Goodlet e5bc07f355 Add dynamic pubsub test using new bidir stream apis 2021-07-06 08:23:29 -04:00
Tyler Goodlet 98133a984e Parametrize with async for style tests 2021-07-06 08:23:29 -04:00
Tyler Goodlet 4240efc7e3 Add basic test set 2021-07-06 08:23:29 -04:00
Tyler Goodlet 4846c6d498 Cancel scope on stream consumer completion 2021-07-06 08:23:29 -04:00
Tyler Goodlet 55760b3fe0 Only expect further message in non-name-error first case 2021-07-04 12:55:36 -04:00
Tyler Goodlet 9c9309faf8 Handle race for tty by child actors 2021-07-04 10:25:41 -04:00
Tyler Goodlet b372f4c92b Handle top level multierror that presents now? 2021-07-02 11:55:16 -04:00
Tyler Goodlet 2b4cf59ee1 Drop sleep 2021-05-07 11:21:40 -04:00
Tyler Goodlet 5ca963148e Disable leftover debug mode 2021-05-07 11:21:40 -04:00
Tyler Goodlet 4798d3b5db Drop lingering rpc_module_paths refs 2021-05-07 11:21:40 -04:00
Tyler Goodlet 247483ee93 Drop run and rpc_module_paths from streaming tests 2021-05-07 11:21:40 -04:00
Tyler Goodlet 9e64161538 Drop run and rpc_module_paths from rpc tests 2021-05-07 11:21:40 -04:00
Tyler Goodlet 3bddf9a94b Drop run and rpc_module_paths from spawning tests 2021-05-07 11:21:40 -04:00
Tyler Goodlet 1eedd463cb Drop run and rpc_module_paths from pubsub tests 2021-05-07 11:21:40 -04:00
Tyler Goodlet b46e60ab9d Drop run from multi prog tests 2021-05-07 11:21:40 -04:00
Tyler Goodlet cb527c2562 Mostly drop run from local tests 2021-05-07 11:21:40 -04:00
Tyler Goodlet 1584c547cd Drop run and rpc_module_paths from discovery tests 2021-05-07 11:21:40 -04:00
Tyler Goodlet 2efd8ed167 Drop run and rpc_module_paths from cancel tests 2021-05-07 11:21:40 -04:00
Tyler Goodlet b1f657e246 De-compact async with tuple on 3.8- 
Turns out can't use the nicer syntax before python 3.9 (even though it
doesn't seem documented anywhere?).

Relates to #207
 2021-04-28 16:35:15 -04:00
Tyler Goodlet 2498a4963b Update all tests to new streaming API 2021-04-28 12:23:14 -04:00
Tyler Goodlet 1f1619c730 Convert all test suite sync funcs 2021-04-27 12:08:30 -04:00
Tyler Goodlet 47565cfbf3 Use root as default name from `tractor.run()` 2021-02-25 08:51:28 -05:00
Tyler Goodlet cd636b270e Update debug tests to expect 'root' actor name 2021-02-24 13:38:20 -05:00
Tyler Goodlet 8fabd27dbe Lint fixes 2021-02-24 13:13:51 -05:00
Tyler Goodlet a93321e48e Don't run stdlib example as part of test set 2021-02-21 15:41:21 -05:00
Tyler Goodlet 07653bc02e Run parallel examples 2021-02-21 14:08:23 -05:00
Tyler Goodlet 59421d9f3a Fix some borked tests 2021-01-08 20:55:11 -05:00
Tyler Goodlet 5127effd88 Drop warning level logging assert(s) 2020-12-26 15:45:55 -05:00
Tyler Goodlet 4bf9b27f57 Drop all .statespace refs; it was a silly idea 2020-12-22 19:33:16 -05:00
Tyler Goodlet 0eba5f4708 Port remaining tests to pass func refs 2020-12-22 10:39:47 -05:00
Tyler Goodlet 493f2efb50 Port tests to `Portal.run_from_ns()` 2020-12-22 10:39:47 -05:00
Tyler Goodlet a668f714d5 Allow passing function refs to `Portal.run()` 
This resolves and completes #69 allowing all RPC invocation APIs to pass
function references directly instead of explicit `str` names for the
target namespace and function (this is still done implicitly
underneath).  This brings us closer to `trio`'s task running API as well
as acknowledges that any inter-host RPC system (and API) will likely
need to be implemented on top of local RPC primitives anyway. Even if
this ends up **not** being true we can always go to "function stubs" as
part of our IAC protocol or, add a new method to do explicit namespace
calls: `.run_from_module()` or whatever everyone votes on.

Resolves #69

Further, this commit drops `Actor.statespace` from the entire system
since a user can easily get this same functionality using module
level variables. Fix docs to match all these changes (luckily mostly
already done due to example scripts referencing).
 2020-12-21 09:09:55 -05:00
Tyler Goodlet dc475b54ab More obnoxious CI timeout handling 2020-12-18 19:26:29 -05:00
Tyler Goodlet a95488ad2f Handle pexpect's internal timeout 2020-12-18 17:57:44 -05:00
Tyler Goodlet 47f68a0532 Skip debugger tests on non-trio backends 2020-12-17 16:37:05 -05:00
Tyler Goodlet 797bcc1df2 Handle early timeouts on last debugger test 2020-12-17 13:35:45 -05:00
Tyler Goodlet 201771a521 'Fix mypy, change interal type name to `ReceiveStream`, settle on `.shield()`' 2020-12-17 12:01:49 -05:00
Tyler Goodlet 15ead6b561 Add a way to shield a stream's underlying channel 
Add a ``tractor._portal.StreamReceiveChannel.shield_channel()`` context
manager which allows for avoiding the closing of an IPC stream's
underlying channel for the purposes of task re-spawning. Sometimes you
might want to cancel a task consuming a stream but not tear down the IPC
between actors (the default). A common use can might be where the task's
"setup" work might need to be redone but you want to keep the
established portal / channel in tact despite the task restart.

Includes a test.
 2020-12-16 21:42:28 -05:00
Tyler Goodlet 0118589875 Add race case handling for mp backend 2020-12-12 13:30:14 -05:00
Tyler Goodlet a8406c8626 Toss in another tests with daemon subactors 2020-10-15 23:16:56 -04:00
Tyler Goodlet 61a8df358c Comments tweak 2020-10-14 09:06:40 -04:00
Tyler Goodlet 1b6ee2ecf6 Skip sync sleep test on windows 2020-10-13 15:26:46 -04:00
Tyler Goodlet 15edcc622d Skip it on windows too 2020-10-13 15:13:46 -04:00
Tyler Goodlet fd59f4ad16 On windows .spawn dne? 2020-10-13 14:56:26 -04:00
Tyler Goodlet a934eb063c Factor `repodir()` helper into conftest.py 2020-10-13 14:49:31 -04:00
Tyler Goodlet a49deb46f1 Revert "Make tests a package (for relative imports)" 
This reverts commit 1710b642a5.
 2020-10-13 14:42:16 -04:00
Tyler Goodlet 666966097a Revert "Change to relative conftest.py imports" 
This reverts commit 2b53c74b1c.
 2020-10-13 14:42:02 -04:00
Tyler Goodlet ba52de79e1 Skip quad ex on local mp tests as well 2020-10-13 14:20:19 -04:00
Tyler Goodlet 24ef919334 Skip sync sleep test on mp backend 2020-10-13 14:16:20 -04:00
Tyler Goodlet 1710b642a5 Make tests a package (for relative imports) 2020-10-13 10:50:21 -04:00
Tyler Goodlet a88a6ba7a3 Add pattern matching to test 2020-10-13 00:36:34 -04:00
Tyler Goodlet 0e344eead8 Add a "cancel arrives during a sync sleep in child" test 
This appears to demonstrate the same bug found in #156. It looks like
cancelling a subactor with a child, while that child is running sync code,
can result in the child never getting cancelled due to some strange
condition where the internal nurseries aren't being torn down as
expected when a `trio.Cancelled` is raised.
 2020-10-12 23:25:22 -04:00
Tyler Goodlet acb4cb0b2b Add test showing issue with child in tty lock when cancelled 2020-10-07 06:08:31 -04:00
Tyler Goodlet abf8bb2813 Add a deep nested error propagation test 2020-10-06 09:21:53 -04:00
Tyler Goodlet 2b53c74b1c Change to relative conftest.py imports 2020-10-05 11:58:58 -04:00
Tyler Goodlet 371025947a Add a multi-subactor test where the root errors 2020-10-05 11:58:58 -04:00
Tyler Goodlet 31c1a32d58 Add re-entrant root breakpoint test; demonstrates a bug.. 2020-10-05 11:58:58 -04:00
Tyler Goodlet e387e8b322 Add a multi-subactor test with nesting 2020-10-05 11:58:58 -04:00
Tyler Goodlet 73a32f7d9c Add initial subactor debug tests 2020-10-05 11:58:58 -04:00
Tyler Goodlet 0a2a94fee0 Add initial root actor debugger tests 2020-10-05 11:58:58 -04:00
Tyler Goodlet e7ee0fec34 Pass a copy of the expected exposed modules 2020-09-24 10:12:10 -04:00
Guillermo Rodriguez 5e3ce765dd
Drop mac support, will continue the experiment on another branch 2020-09-03 10:41:09 -03:00
Guillermo Rodriguez ad68ff665f
Missing a platform.system() check 2020-09-03 09:57:04 -03:00
Guillermo Rodriguez c993e36e95
Simplified CI detection 2020-09-03 09:44:24 -03:00
Guillermo Rodriguez 03e5852acf
Added some missing CI integration pieces 2020-09-02 13:19:42 -03:00
Tyler Goodlet 451170bb63 Pass explicit kwargs to new discovery test funcs 2020-08-13 13:26:08 -04:00
Tyler Goodlet 0c8dcd0ec5 Use allocated arbiter port in local reg test 2020-08-13 11:54:37 -04:00
Tyler Goodlet 1ae0efb033 Make rpc_module_paths a list 2020-08-13 11:53:45 -04:00
Tyler Goodlet acd5b80f4c Add close channel test with remote arbiter 2020-08-08 15:17:04 -04:00
Tyler Goodlet c821690834 Actor cancellation is now more latent; loosen timeing 2020-08-08 15:16:10 -04:00
Tyler Goodlet 7f74182a8a Never allow more then info logging in daemon; causes blocking 2020-08-08 15:15:43 -04:00
Tyler Goodlet 3a868fec30 Cancel root nursery to trigger failure 
The real issue is if the root nursery gets cancelled prior to
de-registration with the arbiter. This doesn't seem easy to
reproduce by side effect of a KBI however that is how it was
discovered in practise.
 2020-08-07 11:34:17 -04:00
Tyler Goodlet d2d8860dad Add test for dereg failure on manual stream close 
There was code from the last de-registration fix PR that I had commented
(to do with shielding arbiter dereg steps in `Actor._async_main()`) because
the block didn't seem to make a difference under infinite streaming
tests. Turns out it **for sure** is needed under certain conditions (likely
if the actor's root nursery is cancelled prior to actor nursery exit).
This was an attempt to simulate the failure mode if you manually close the
stream **before** cancelling the containing **actor**.

More tests to come I guess.
 2020-08-07 09:16:01 -04:00
Tyler Goodlet a5279f80a7 Actually reproduce the de-registration problem 
This truly reproduces #141. It turns out the problem only occurs when
we're cancelled in the middle of consuming "infinite streams".
Good news is this tests a lot of edge cases :)
 2020-08-03 18:28:09 -04:00
Tyler Goodlet 699bfd1857 Run unreg on cancel tests with remote arbiter as well 2020-08-03 15:41:41 -04:00
Tyler Goodlet 2ccaa94c60 Move daemon fixture up to conftest 2020-08-03 15:39:54 -04:00
Tyler Goodlet 0d9483376d Test cancel with SIGINT on non-windows as well 2020-08-03 13:01:56 -04:00
Tyler Goodlet cd2d8c217a Test that subactors deregister on cancel 2020-08-03 12:53:03 -04:00
Tyler Goodlet da56d0f043 Add slight delays to SIGINT tests on mp 2020-07-29 13:27:15 -04:00
Tyler Goodlet 8f17c89cf9 Skip **every** quad test for mp on ci 2020-07-29 10:26:19 -04:00
Tyler Goodlet 5715fd4599 Skip streaming tests 2020-07-27 12:20:46 -04:00
Tyler Goodlet e8a38e4d15 Fix cancelled type handling 2020-07-27 11:15:05 -04:00
Tyler Goodlet 3c7ec72f8e Fix SIGINT test names 2020-07-26 23:37:44 -04:00
Tyler Goodlet 5a27065a10 Finally tame the super flaky tests 
- ease up on first stream test run deadline
- skip streaming tests in CI for mp backend, period
- give up on > 1 depth nested spawning with mp
- completely give up on slow spawning on windows
 2020-07-26 22:53:40 -04:00
Tyler Goodlet 891edbab5f Run the trio spawner in nested tests 2020-07-25 18:19:17 -04:00
Tyler Goodlet dddbeb0e71 Run Windows on trio and mp backends 
The new pure trio spawning backend uses `subprocess` internally which is
also supported on windows so let's run it in CI.
 2020-07-25 13:41:48 -04:00
Tyler Goodlet a215df8dfc Add true ctrl-c tests using an out-of-band SIGINT 
Verify ctrl-c, as a user would trigger it, properly cancels the actor
tree. This was an issue with `trio-run-in-process` that clearly wasn't
being handled correctly but for sure is now with the plain old
`trio` process spawner.

Resolves #115
 2020-07-24 17:08:52 -04:00
Tyler Goodlet 4de75c3a9d Test cancel via api and keyboard interrupt 
An initial attempt to discover an issue with trio-run-inprocess.
This is a good test to have regardless.
 2020-07-24 17:08:52 -04:00
Tyler Goodlet 5adf2f3b0c Add logging to some cancel tests 2020-07-24 17:08:52 -04:00
Guillermo Rodriguez 56463a08df First attempt at removing trip & updating hazmat -> lowlevel 2020-07-24 17:08:52 -04:00
Tyler Goodlet d62610c44e Search for guard and strip instead of hardcoding 2020-02-10 12:59:44 -05:00
Tyler Goodlet 63bcd99323 Only error the exs test when "Error" in last line of output 2020-02-10 12:14:16 -05:00
Tyler Goodlet f2030a2714 Better document the window's gotcha solution in test code 2020-02-09 14:59:22 -05:00
Tyler Goodlet 7880934505 Add tests for all docs examples 
Parametrize our docs example test to include all (now fixed) examples
from the `READ.rst`. The examples themselves have been fixed/corrected
to run but they haven't yet been updated in the actual docs. Once #99
lands these example scripts will be directly included in our
documentation so there will be no possibility of presenting incorrect
examples to our users! This technically fixes #108 even though the new
example aren't going to be included directly in our docs until #99
lands.
 2020-02-09 02:01:39 -05:00
Tyler Goodlet 70636a98f6 Use the windows "gotchcas" fix for example tests 
Apply the fix from @chrizzFTD where we invoke the entry point using
module exec mode on a ``__main__.py`` and import the
``test_example::`main()` from within that entry point script.
 2020-02-09 01:07:07 -05:00
Tyler Goodlet c6f3ab5ae2 Initial examples testing attempt 
A per #98 we need tests for examples from the docs as they would be run
by a user copy and pasting the code. This adds a small system for loading
examples from an "examples/" directory and executing them in
a subprocess while checking the output. We can use this to also verify
end-to-end expected logging output on std streams (ex. logging on
stderr).

To expand this further we can parameterize the test list using the
contents of the examples directory instead of hardcoding the script
names as I've done here initially.

Also, fix up the current readme examples to have the required/proper `if
__name__ == '__main__'` script guard.
 2020-02-07 19:36:52 -05:00
Tyler Goodlet a6b249cd52 Forkserver just can't seem to cut it... 2020-01-26 23:17:06 -05:00
Tyler Goodlet 5fd38d4618 Force `mp` backend if option is blank? 2020-01-26 23:16:43 -05:00
Tyler Goodlet b4cb7439a1 Drop useless fork error branch 2020-01-26 22:46:48 -05:00
Tyler Goodlet 7c1bc1fce4 Make windows job names explicit 2020-01-26 22:17:38 -05:00
Tyler Goodlet e18fec9b17 Always force mp backend on Windows 2020-01-26 22:09:06 -05:00
Tyler Goodlet ecced3d09a Allow choosing the spawn backend per test session 
Add a `--spawn-backend` option which can be set to one of {'mp',
'trio_run_in_process'} which will either run the test suite using the
`multiprocessing` or `trio-run-in-process` backend respectively.
Currently trying to run both in the same session can result in hangs
seemingly due to a lack of cleanup of forkservers / resource trackers
from `multiprocessing` which cause broken pipe errors on occasion (no
idea on the details).

For `test_cancellation.py::test_nested_multierrors`, use less nesting
when mp is used since it breaks if we push it too hard with the
whole recursive subprocess spawning thing...
 2020-01-26 21:36:08 -05:00
Tyler Goodlet 783fe53b06 Don't mix trip with multiprocessing for now 
It seems that mixing the two backends in the test suite results in hangs
due to lingering forkservers and resource managers from
`multiprocessing`? Likely we'll need either 2 separate CI runs to work
or someway to be sure that these lingering servers are killed in between
tests.
 2020-01-24 00:55:40 -05:00
Tyler Goodlet bc259b7eab Use trip as default in all tests for now 2020-01-24 00:54:19 -05:00
Tyler Goodlet 44996fe328 Add trip to start_method parametrizations 2020-01-23 01:16:10 -05:00
Tyler Goodlet e1a55a6f4f Importing happens once locally now so expect a local error 2020-01-21 10:28:32 -05:00
Tyler Goodlet 915bf17a9a Add process tree depth control to nested multierror test 
Another step toward having a complete test for #89.
Subactor breadth still seems to cause the most havoc and is why I've
kept that value to just 2 for now.
 2019-11-25 12:05:15 -05:00
Tyler Goodlet 2d4b6de4f4 Spawn even less suba-actors in Windows CI 
Seems like we've probably got some greater limitations
with Windows and "nested" spawned sub-processes...
 2019-11-22 21:23:25 -05:00
Tyler Goodlet 97df927714 Run first example test under both start methods 2019-10-30 00:31:28 -04:00
Tyler Goodlet 6d9ac53bd5 Add nested multierror testing 
Add a test to verify that `trio.MultiError`s are properly propagated up
a simple actor nursery tree. We don't have any exception marshalling
between processes (yet) so we can't validate much more then a simple
2-depth tree. This satisfies the final bullet in #43.

Note I've limited the number of subactors per layer to around 5 since
any more then this seems to break the `multiprocessing` forkserver;
zombie subprocesses seem to be blocking teardown somehow...

Also add a single depth fast fail test just to verify that it's the
nested spawning that triggers this forkserver bug.
 2019-10-30 00:30:40 -04:00
Tyler Goodlet d406383cd3 Add a preliminary nested subactor `MultiError` test 
This exemplifies the undefined behaviour in #88 and begins to test for
the last bullet in #43.
 2019-10-26 15:04:13 -04:00
Tyler Goodlet 6dbb3f7ae6 Extend cancellation tests 
In an effort towards #43. This completes the first major bullet's worth of tests
described in that issue.
 2019-10-26 09:55:07 -04:00