py.test generative tests behavior unexpected

[Carl Friedrich Bolz]

Jim Vickroy wrote:
> Hello all,
> 
> I'm a first time user of py.tests.
> 
> My setup is:
> * py.test v0.9.0
> * Python 2.5 (r25:51908, Sep 19 2006, 09:52:17) [MSC v.1310 32 bit 
> (Intel)] on win32
> * Microsoft Windows XP Pro (service pack 2)
> 
> The attached file (py-test-generator-trial.py) demonstrates a behavior I 
> do not understand.
> 
> When test_filters() is implemented as a generator, the tests appear to 
> be run twice and all tests fail during the second iteration except for 
> the final case ('AL12_1','Gray') in the loop.
> 
> When the yield statement, in test_filters(), is disabled and the 
> assertion statement is enabled, the behavior is as expected -- namely 
> the tests are performed once and all pass.
> 
> Could someone help me to understand this behavior?

I think you will have more luck at the py-lib developer mailing list here:

py-dev at codespeak.net

The mailman list info is here:

http://codespeak.net/mailman/listinfo/py-dev

Cheers,

Carl Friedrich