Tuesday, April 28, 2015

Using tox to test code under multiple python versions

Tox is a great project that makes testing against different python versions simple, standing on the shoulders of pip and virtualenv. For our project the tox specification is incredibly simple:
$ cat tox.ini 
envlist = py27, py34

commands = nosetests -v
deps =
This tells tox to create two virtualenv's, one for python 2.7 and one for python 3.4, install dependencies listed in requirements.txt, and then run tests with "nosetests -v". You can run the test against all of the configured environments with just
Or a particular subset like this:
tox -e py34

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