Docs: change nosetest instruction

[ict4eo]

Running Ubuntu 12.10. The recommended way of running tests (http://pandas.pydata.org/pandas-docs/stable/install.html#running-the-test-suite)

nosetests pandas

did not work. I had to use:

nosetests --exe pandas

It would also be useful to know how to avoid the:

OperationalError: (1046, 'No database selected')

errors.

[cpcloud]

this should only happen if you're trying to run the tests from the installed location and not from the git repo

see #761

if you're running from the installed location please close

you should run the tests from the git clone, not the installed version

[lodagro]

There are many users without a git repo (e.g. pip install ...). So may be good to explain how to run tests, when those are installed as executable files.

[jreback]

@cpcloud ?

[cpcloud]

wiki or doc blurb?

[jreback]

I think there is a section on main website already
just needs to be updated I think

[jreback]

@cpcloud I think we should have

pd.run_tests() or something?

[cpcloud]

@jreback what's wrong with

import nose
nose.run()

?

[jreback]

does it work?

(can do a wrapper function around it I guess)

[cpcloud]

it runs the tests .... what else would we put in a wrapper?

[jreback]

well, ideally want something like

nosetests -A 'not slow and not disabled and not network' ....

and maybe need a 'not db' somehow

in theory options for this too

[jreback]

numpy has a run_tests which is overkill but something like what we want

[cpcloud]

ok so something that runs the tests but is "nicer" than:

nose.run(argv=["-A 'not slow and not network'"])

[cpcloud]

like pd.run_tests(attr='not slow and not network')?