tox.ini template is slow at running tests

[aspiers]

IIUC src/pyscaffold/templates/tox_ini.template causes tox to do an sdist install even though the tests are unlikely to need it. This can slow testing down a lot. If I'm correct, this should be fixed by adding usedevelop = True to the [testenv] section:

http://tox.readthedocs.io/en/latest/example/general.html#avoiding-expensive-sdist

See also #160.

[FlorianWilhelm]

Thanks @aspiers for your suggestion. Surely in large projects the usedevelop = True option could help to speed up things but for smaller projects the overhead is quite minimal anyway. The downside to it is that the actual packaging and installing is no longer tested by tox.

So imagine you have forgotten to add some data file to the repository and thus it won't be in the source distribution. In this case with usedevelop = True everything should run smoothely but without it you will see the error that the data file is missing as it should be.

What do you think about a compromise here. We could add the commented line # usedevelop = True to the template together with a comment to uncomment it in order to speed up the unit tests if necessary.

[FlorianWilhelm]

@abravalheri, I added it to the template as a comment as discussed and made a PR. I think we can close this now.

[aspiers]

Sorry for the slow reply. I didn't personally find that for smaller projects the overhead was minimal - in fact it was a small project of mine which prompted submitting this ticket. However I think the compromise here is good, so thanks a lot!