Generalizing testenv

[brandon-leapyear]

It seems to me that [testenv] does at least two things:

1. Specify the base environment that all other testenvs inherit from
2. Provide the fallback case for any env not matched by any other [testenv:...] definition

It seems like these two features should be explicit:

1. Add a parent option for a testenv to specify another testenv to inherit from
   • This comment seems to imply this will be handled by tox 4, but I can't see any mention in [RFC] tox 4 #1394 about this I do see the docs for this now! Seems to be implemented in gaborbernat@575f648
2. Allow patterns in a testenv name; e.g. [testenv:*-dist]
   • Related: Allow parametrization of any testenv #189
   • Use cases:
     • Set usedevelop by default, but adding -dist to the end of any environment uses a wheel build
     • If someone had two test frameworks (e.g. a pytest suite and a unittest suite), you could have both [testenv:pytest-*] and [testenv:unittest-*]
       • I guess the current approach for this is to have two different tox.ini files
       • Generative sections don't completely help here, as I'd like to keep the current [testenv] functionality of being to specify both py37-django15 and py37-pandas13; a generative section like py{37,38,39,310}-django{15,16}-pandas{11,12,13} will require both django + pandas to be specified. Adding a trailing comma like py{37,38}-django{15,16,}-pandas{11,12,13,} doesn't work; it will require matching py37--pandas11.

With these two features, a tox 3 config

[testenv]
...

[testenv:docs]
...

would be equivalent to

[testenv:*]
...

[testenv:docs]
parent = [testenv:*]
...

[gaborbernat]

tox 4 uses the key base instead of parent, but the feature is there, check the documentation 👌

[brandon-leapyear]

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--- @gaborbernat what about the second feature mentioned?

On Sat, May 7, 2022, 12:41 PM Bernát Gábor ***@***.***> wrote: Closed #2412 <#2412>. — Reply to this email directly, view it on GitHub <#2412 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AGUC75PLANGTHF37IJVY5CDVI3BQLANCNFSM5VGQFYQQ> . You are receiving this because you authored the thread.Message ID: ***@***.***>

[gaborbernat]

@gaborbernat what about the second feature mentioned?

no plans, we will add python config support that will allow this advanced use case