Using nose to test mixed python2 and python3 code

Question

I have a project that has both python2 and python3 code in it (its a client/server thing; the server is python3 but there are python2 and python3 clients). I'm using nose to handle unit testing. The directory layout is (currently) basically like

client2
    tests
client3
    tests
server
    tests

Is there a way to set up or use nose so that running node with python2 gets just the python2 tests, and similarly python3. For instance, something like:

client2
    tests2
client3
    tests3
server
    tests3

... with some suitable nose arguments. I messed around with the -m option but couldn't get anywhere.

Answer 1

Looks like you will need a combo of --where and --py3where :

--py3where:

Look for tests in this directory under Python 3.x. Functions the same as 'where', but only applies if running under Python 3.x or above. Note that, if present under 3.x, this option completely replaces any directories specified with 'where', so the 'where' option becomes ineffective. [NOSE_PY3WHERE]

So for you it would be something like this:

nosetests --where=. --where=client2 --py3where=. --py3where=client3 --py3where=server -v

When using nosetests with python3 it will run client3 and server tests only. When running on python2 it will run client2 tests only.

Also, have a look at this question and answers for alternatives.