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9 Commits (60fc43e530aed4eb4dc932f140518df62461d2fd)

Author SHA1 Message Date
Tyler Goodlet 0fcd424d57 Start a new `._testing.fault_simulation`
Since I needed the `break_ipc()` helper from the
`examples/advanced_faults/ipc_failure_during_stream.py` used in the
`test_advanced_faults` suite, might as well move it into a pkg-wide
importable module. Also changed the default break method to be
`socket_close` which just calls `Stream.socket.close()` underneath in
`trio`.

Also tweak that example to not keep sending after the stream has been
broken since with new `trio` that will raise `ClosedResourceError` and
in the wrapping test we generally speaking want to see a hang and then
cancel via simulated user sent SIGINT/ctl-c.
2024-04-03 10:19:50 -04:00
Tyler Goodlet 8ab5e08830 Adjust advanced faults test(s) for absorbed EoCs
More or less just simplifies to not seeing the stream closure errors and
instead expecting KBIs from the simulated user who 'ctl-cs after hang'.

Toss in a little `stuff_hangin_ctlc()` to the script to wrap all that
and always check stream closure before sending the final KBI.
2024-03-19 19:33:06 -04:00
Tyler Goodlet 96992bcbb9 Add (back) a `tractor._testing` sub-pkg
Since importing from our top level `conftest.py` is not scaleable
or as "future forward thinking" in terms of:
- LoC-wise (it's only one file),
- prevents "external" (aka non-test) example scripts from importing
  content easily,
- seemingly(?) can't be used via abs-import if using
  a `[tool.pytest.ini_options]` in a `pyproject.toml` vs.
  a `pytest.ini`, see:
  https://docs.pytest.org/en/8.0.x/reference/customize.html#pyproject-toml)

=> Go back to having an internal "testing" pkg like `trio` (kinda) does.

Deats:
- move generic top level helpers into pkg-mod including the new
  `expect_ctxc()` (which i needed in the advanced faults testing script.
- move `@tractor_test` into `._testing.pytest` sub-mod.
- adjust all the helper imports to be a `from tractor._testing import <..>`

Rework `test_ipc_channel_break_during_stream()` and backing script:
- make test(s) pull `debug_mode` from new fixture (which is now
  controlled manually from `--tpdb` flag) and drop the previous
  parametrized input.
- update logic in ^ test for "which-side-fails" cases to better match
  recently updated/stricter cancel/failure semantics in terms of
  `ClosedResouruceError` vs. `EndOfChannel` expectations.
- handle `ExceptionGroup`s with expected embedded errors in test.
- better pendantics around whether to expect a user simulated KBI.
- for `examples/advanced_faults/ipc_failure_during_stream.py` script:
  - generalize ipc breakage in new `break_ipc()` with support for diff
    internal `trio` methods and a #TODO for future disti frameworks
  - only make one sub-actor task break and the other just stream.
  - use new `._testing.expect_ctxc()` around ctx block.
  - add a bit of exception handling with `print()`s around ctxc (unused
    except if 'msg' break method is set) and eoc cases.
  - don't break parent side ipc in loop any more then once
    after first break, checked via flag var.
  - add a `pre_close: bool` flag to control whether
    `MsgStreama.aclose()` is called *before* any ipc breakage method.

Still TODO:
- drop `pytest.ini` and add the alt section to `pyproject.py`.
 -> currently can't get `--rootdir=` opt to work.. not showing in
   console header.
 -> ^ also breaks on 'tests' `enable_modules` imports in subactors
   during discovery tests?
2024-03-13 09:09:08 -04:00
Tyler Goodlet e34823aab4 Add parent vs. child cancels first cases 2023-01-29 14:55:02 -05:00
Tyler Goodlet 6c35ba2cb6 Add IPC breakage on both parent and child side
With the new fancy `_pytest.pathlib.import_path()` we can do real
parametrization of the example-script-module code and thus configure
whether the child, parent, or both silently break the IPC connection.

Parametrize the test for all the above mentioned cases as well as the
case where the IPC never breaks but we still simulate the user hammering
ctl-c / SIGINT to terminate the actor tree. Adjust expected errors based
on each case and heavily document each of these.
2023-01-29 14:55:02 -05:00
Tyler Goodlet 3a0817ff55 Skip `advanced_faults/` subset in docs examples tests 2023-01-29 14:55:02 -05:00
Tyler Goodlet 7fddb4416b Handle `mp` spawn method cases in test suite 2023-01-29 14:55:02 -05:00
Tyler Goodlet 4f8586a928 Wrap ex in new test, change dir helpers to use `pathlib.Path` 2023-01-29 14:55:02 -05:00
Tyler Goodlet fb9ff45745 Move example to a new `advanced_faults` egs subset dir 2023-01-29 14:55:02 -05:00