[Python-Dev] setUpClass and setUpModule in unittest (original) (raw)

Robert Collins robertc at robertcollins.net
Sat Feb 13 10:28:19 CET 2010

On Sat, 2010-02-13 at 01:04 +0000, Michael Foord wrote:

> However from this example I cannot guess whether those resources are > set up and torn down per test or per test class. This particular example is the equivalent of setUpClass - so by declaring the resource as a class attribute it will created before the first test for the class is run and disposed of after the last test for the class.

You could also create a single resource and share it between several test classes, or even across classes in several modules, and have it created and disposed of at the right point. I've copied Rob Collins in on this email in case I've misunderstood.

Yes, precisely.

> Also the notation > > resources = [('workdir', MyTempDir())] > > looks pretty ugly -- if 'workdir' ends up being an instance attribute, > why not make it a dict instead of a list of tuples? Or even better, a > could each resource become a class variable?

I have two key 'todos' planned in the notation for testresources:

Something like

@resource(workdir=MyTempDir())
def test_foo(self):
    pass

Secondly, I want to make the class level 'resources' list into a dict. It was a list initially, for misguided reasons that no longer apply, and it would be much nicer and clearer as a dict.

> I guess we could introspect the class for every attribute that is a resource, but I prefer some way of explicitly declaring which resources a TestCase is using.

I could see doing the below as an alternative: @resource(workdir=MyTempDir()) class TestFoo(TestCase): ...

I'm not personally very keen on inspecting everything in self.dict, I suspect it would tickle bugs in other unittest extensions. However I'm not really /against/ it - I don't think it will result in bad test behaviour or isolation issues. So if users would like it, lets do it.

-Rob -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: application/pgp-signature Size: 198 bytes Desc: This is a digitally signed message part URL: <http://mail.python.org/pipermail/python-dev/attachments/20100213/f1406e6e/attachment.pgp>

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