Support for unittest -k option

[François Freitag]

Hi Django Devs,

https://code.djangoproject.com/ticket/30245 suggests supporting Python
unittest `-k` option, to selectively run tests matching a keyword.

Currently, `-k` is the shorthand for `--keepdb` in Django.
A `--filter` flag was suggested to preserve backward compatibility.
Carlton suggested removing the `-k` option from `--keepdb` and reusing
it for unittest `-k`. That would follow unittest more closely, reduce
user confusion and ease maintenance.

What do you think is best? Do you see other options?

If re-taking the `-k` option for unittest `-k`, should a new shorthand
be introduced for `--keepdb`?

Thanks for your time,
François

[Carlton Gibson]

Thanks François,

Just on this, my thought is that if we don't follow `unittest` in changing `-k` for this, we have a steady trickle of confusion forever-more. 

I'd rather avoid that. 

C.

[Adam Johnson]

+1 from me, I'm okay with the small breaking change to keep in-line with upstream unittest. Since it's restricted to tests, it's unlikely to break anyone's production site.

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[Tobias McNulty]

Agreed it's probably better to make the switch now, and I'd be fine without a replacement shorthand alternative for --keepdb.

Cheers,

Tobias McNulty
Chief Executive Officer

tob...@caktusgroup.com
www.caktusgroup.com

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[Tim Graham]

-kdb could be a suitable short option.

[Dan Davis]

I personally don't think a short-hand is needed.

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[Arthur Rio]

I’m +1 on no short-hand. Also “kdb” is a little to close to “pdb” and doesn’t really make sense to me.

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Arthur

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[Luke Plant]

I use `--keepdb` a lot, I never knew there was a shorthand and even know I do know wouldn't use it. For things like this I usually find it easy to remember the long option. So I'm +1 on changing it too, without a new shorthand for `--keepdb`. In the keyword usage `-k` must be followed by a keyword, so for people who did use it the shorthand, the old usage will break loudly which is good.

Luke