#25497: Parallel test fails if tblib is not installed.
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Reporter: user0007 | Owner: nobody
Type: Bug | Status: closed
Component: Testing framework | Version: 1.9a1
Severity: Release blocker | Resolution: worksforme
Keywords: | Triage Stage: Accepted
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
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Changes (by aaugustin):
* status: new => closed
* resolution: => worksforme
Comment:
This ticket's description is misleading. Parallel test *fail to report
failures correctly and suggest to install tblib* when it isn't installed.
This is the intended and documented behavior. It was discussed on the
DevelopersMailingList prior to the feature being implemeted and committed.
As shown in your description, there's a detailed explanation message. I'm
not sure what else I could do
You have three options, pick your favorite:
1) Don't run tests in parallel and get exactly the same behavior as in
Django 1.8.
2) Have your tests crash hard if an exception occurs.
3) Install `tblib`.
Claude, in case this isn't clear, `tblib` is only required for getting
correct failure reports when running tests in parallel.
Collin, I don't think it makes sense to ignore the `--parallel` option
when `tblib` isn't installed. As long as tests complete without errors or
failures, `tblib` isn't needed.
Of course as soon as you have a test failure you'll want to know why it
fails. If you're absolutely unable to `pip install tblib` and absolutely
need to run tests in parallel — I can't see why that would be the case,
but for the sake of the argument let's assume at least one user will be in
this situation — you can re-run just the failing test without the
`--parallel` option.
If someone proposes a patch to improve the situation, we can reopen this
discussion.
--
Ticket URL: <https://code.djangoproject.com/ticket/25497#comment:6>
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