[TIP] Nose questions

[Nat Williams]

On 9/5/08 6:55 AM, "Toby White" <toby.o.h.white at googlemail.com> wrote:

> (apologies if there is a better, more nose-specific place to send
> questions, but I couldn't find one)

http://groups.google.com/group/nose-users is a good place

>
> I've recently started with nose, which is mostly fine so far, but I've
> two questions on its use - I'd be grateful for any pointers.
>
>
> 1) How do I use nose, doctests & pdb together. The docs seem to
> suggest ought to be possible, but I can't work out how.
> If I put the standard "import pdb;pdb.set_trace()" in my doctests, and
> run them through nose, all that happens is that nose hangs; Ctrl-C-ing
> it reveals that it's waiting inside pdb for input, but nose has
> presumably done something with stdin/stdout
>
> $ nosetests -vv --with-doctest nullNugget.py
> Doctest: nullNugget.Nugget ... ^CTraceback (most recent call last):
>   File "/usr/local/bin/nosetests", line 8, in <module>
>     load_entry_point('nose==0.10.3', 'console_scripts', 'nosetests')()
> [...]
>   File "/System/Library/Frameworks/Python.framework/Versions/2.5/lib/
> python2.5/doctest.py", line 328, in trace_dispatch
>     return pdb.Pdb.trace_dispatch(self, *args)
>   File "/System/Library/Frameworks/Python.framework/Versions/2.5/lib/
> python2.5/bdb.py", line 52, in trace_dispatch
>     return self.dispatch_return(frame, arg)
>   File "/System/Library/Frameworks/Python.framework/Versions/2.5/lib/
> python2.5/bdb.py", line 85, in dispatch_return
>     self.user_return(frame, arg)
>   File "/System/Library/Frameworks/Python.framework/Versions/2.5/lib/
> python2.5/pdb.py", line 170, in user_return
>     self.interaction(frame, None)
>   File "/System/Library/Frameworks/Python.framework/Versions/2.5/lib/
> python2.5/pdb.py", line 187, in interaction
>     self.cmdloop()
>   File "/System/Library/Frameworks/Python.framework/Versions/2.5/lib/
> python2.5/cmd.py", line 136, in cmdloop
>     line = self.stdin.readline()
> KeyboardInterrupt
>

Run nosetests with the -s option to disable the capture plugin.  That will
let you see and interact with pdb.

>
>
> 2) Can I use attribute selectors with doctests?

Are you putting doctests in the test functions themselves?  I'm fairly sure
that's discouraged, or otherwise not a good idea.  As I understand it,
doctests are for the libraries and other modules that your tests use, not
the tests themselves.
>
>
> Toby
>

Nat


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