[Python-Dev] unittest2 plus class and module level fixtures in unittest
fuzzyman at voidspace.org.uk
Mon Mar 8 20:20:50 CET 2010
On 08/03/2010 01:11, Antoine Pitrou wrote:
> Le Mon, 08 Mar 2010 00:51:02 +0000,
> Michael Foord<fuzzyman at voidspace.org.uk> a écrit :
>> In other news, class and module fixtures (setUpClass /
>> tearDownClass / setUpModule / tearDownModule) are now implemented in
>> unittest (in trunk
>> - not yet merged to py3k). These features are tested but I'm sure
>> there are some lurking bugs or oddities, so please try them out. I
>> have not yet added documentation for them; I'll pull it out from this
>> email as a starting point.
>> I'd rather this thread didn't become *another* debate on the merit of
>> these features, but perhaps that is too much to hope for.
> Just for the record, could you sum up the reasons why you/we decided on
> this route rather than e.g. adding a test-resources-like facility?
> (I'm not saying I disagree, it's just that I didn't remember a decision
> had already been made on this point)
Well, Guido had already stated on python-ideas that he wanted these
features (class and module fixtures) in unittest. I (and others)
suggested testresources as an alternative but it became clear that it
didn't offer a suitable abstraction for module level fixtures, instead
you would have to manually attach the resources to all of the classes in
the module yourself.
In addition to the lack of a module level fixture abstraction Guido felt
that the testresources API itself was not yet mature or polished enough
to come into the standard library. At that point I figured we had
reverted to the decision that setUpClass / setUpModule should go in.
testresources still works of course, and is a better general solution
for shared fixtures where people are pushing beyond what setUpClass and
setUpModule allow. I'll probably link to testresources in the shared
fixture documentation - and it has the great advantage of *not* being in
the standard library and is therefore free to evolve faster.
All the best,
> Thanks for all your work on this!
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