[TIP] Extension module discovery questions...

jason pellerin jpellerin at gmail.com
Wed Jun 25 07:27:56 PDT 2008

On Tue, Jun 24, 2008 at 8:54 PM, Fernando Perez <fperez.net at gmail.com> wrote:
> Hi all,
> me again :)  Sorry if this is getting annoying but I'm a bit lost
> after reading the docs and trying lots of different things.
> The issue I have is exactly how to tweak nose to support the discovery
> of extension modules in a package.

Here's what I would do:

* save a reference to the core test loader in prepareTestLoader()
* implement wantFile() to return True for files that are extension modules
* implement loadTestsFromFile() so that when it sees a file that is an
extension module, it imports the module and then does:
  yield self.loader.loadTestsFromModule(extension_module)

(if you just return rather than yielding there, you'll lose the
ability to have context fixtures in the extension module. If that's
ok, you can just return

> With my monkeypatched plugin, I can get the following line to work OK:
> nosetests -s --with-ipdoctest --doctest-tests sprimes sprimes.primes

Yup, by doing that you're directing nose to load from entities with
those names. Since the name sprimes.primes looks like a module, nose
imports it (without knowing it's an extension module) and passes it
through to loadTestsFromModule(). The process I outlined above should
get you to the same place automatically.


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