Switch to py.test
Replacing nose with py.test:
- py.test is used by astropy, so it will be easier then to (try to) use astropy-helpers, and maybe have something like
import mpdaf ; mpdaf.test()
- nose is deprecated / not maintained
- py.test has much better reports when a test fail
- easier to write tests (using
assert
) and to use test data (with fixtures)
I also remove the "veryslow" mark, to have only a "slow" mark, filtered by default. And speedup SEA test, running on 3 sources instead of 6.