#20483: Reduce the set of apps seen by individual tests
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Reporter: akaariai | Owner: nobody
Type: Cleanup/optimization | Status: new
Component: Testing framework | Version: master
Severity: Normal | Resolution:
Keywords: | Triage Stage: Accepted
Has patch: 1 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 1
Easy pickings: 0 | UI/UX: 0
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Comment (by aaugustin):
I updated my pull request (https://github.com/django/django/pull/1240) as
follows:
- I simplified the behavior and minimized changes by removing everything
that isn't strictly necessary.
- I updated `available_apps` declarations, since the current application
isnt' implicitly included any longer.
- I refactored the changes to the app cache, `AppCache.available_apps` is
now a set of app labels, and I added `unset_available_apps()` which looks
slightly better than `set_available_apps(None)`.
- I added documentation: the API is still explicitly described as private
and not subject to the deprecation policy, but it's explained for
contributors and committers.
Tests pass under SQLite, I'm stumbling on the same problem as Anssi:
`flush` fails on PostgreSQL. I see two possibilities:
- use `TRUNCATE .. CASCADE` -- since this happens on the test database,
and isn't recommended outside of Django's test suite, I'm not too
concerned about cascading to unmanaged models and destroying data.
- use `DELETE FROM ...` instead of `TRUNCATE ...` -- this needs a
benchmark.
Either solution requires a non-trivial amount of changes :(
--
Ticket URL: <https://code.djangoproject.com/ticket/20483#comment:28>
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