#32409: TestCase async tests are not transaction-aware
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Reporter: David | Owner: nobody
Type: New feature | Status: new
Component: Testing framework | Version: 3.1
Severity: Normal | Resolution:
Keywords: TestCase, async, | Triage Stage: Accepted
transaction |
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
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Comment (by Carlton Gibson):
> I do not know if this can be achieved without an async-ready database
client.
Yes, That's kind of where I'm at with it. :| — This is a Difficult
Problem™.
In traditional request-response scenarios we can reasonably assume that
there's a single transaction in a single thread and not worry about what
goes on outside that. Once there are multiple threads in play you start
wanting (that's not the right word perhaps) to think about isolation
levels, how you'll handle conflicts and so on, and what's right in that
space for your application (which may not be general). At the moment we're
constrained by the ORM not having been built with any in mind at all, so
the required safety wheels do impinge.
For now, can you try writing this particular test with pytest-asyncio?
That should skip the outer async_to_sync(), which should/may hopefully
mean that the sync_to_async call is run on the outermost thread. (Without
sitting down with the exact test and the debugger it's hard to say
exactly.)
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Ticket URL: <https://code.djangoproject.com/ticket/32409#comment:6>
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