Hi Rich,

Regarding a couple of things you mentioned on Django-developers:

On Thursday, 5 May 2016 19:20:16 UTC+1, Rich Rauenzahn wrote:
>
>
> Thanks, Tim.
>
> Unfortunately I can't move past Django 1.7 yet -- dependencies.  I've been 
> marching my way up one revision at a time hopefully up to 1.9 as a way to 
> keep the scope of what breaks under control as I move through each major 
> revision and stabilize my project.  Then I attack replacing dependencies.
>
> I really think I've found a bug here ... which I hope to suggest a patch 
> for and submit, hence the post to the developers channel, but I can go back 
> to the users group for now... My recent experience with that list doesn't 
> bode well, however, and I don't have high hopes with anyone there able to 
> respond at the internals level I may need to track down the issue.  I've 
> almost rewritten my tests to just load raw sql, but if there is a bug here 
> I'd like to help find it rather than work around/ignore it.
>

Fixture loading was changed in Django 1.8 [1], so even if you have found a 
bug in Django 1.7, there's a good chance that behaviour will be different 
in Django 1.8 and later.


> But In this particular run I'm currently tracing, rich is already in the 
> db (as the only entry) as pk=5 (via fixture loading process).   For one, 
> this tells me the sequence generators aren't always resetting between 
> fixture loads/tests.
>
>  
Sequences *are not* reset between test cases by default [2]. Perhaps you 
need to change your code so that it doesn't assume that the user has pk=1, 
or set reset_sequences = True.

It's difficult to offer any more advice, because you haven't posted any 
code that can reproduce the problem. It doesn't need to be the actual code, 
in fact the simpler the example is the better.

Cheers,
Alasdair

[1]: https://docs.djangoproject.com/en/1.9/releases/1.8/#testcase-data-setup
[2]: 
https://docs.djangoproject.com/en/1.9/topics/testing/advanced/#django.test.TransactionTestCase.reset_sequences

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