pybuild and unittest at build time

[Luca Falavigna <dktrkranz@debian.org>]

Hi,

A package I'd like to sponsor has a test suite [0], and I'd like to be
able to run it at build time. Launching "python{,3} test_isoweek.py"
seems enough to trigger the test suite.

pybuild is not able to run the test suite automatically, could you
suggest me the best way to implement this feature?

[0] https://github.com/gisle/isoweek/blob/master/test_isoweek.py

Cheers,
Luca