pytest 3.0 deprecates yield tests and produces warnings about it

[cdent]

gabbi generates tests for pytest with yields. with pytest 3.0 this is now deprecated and produces warnings:

WC1 /Users/cdent/src/gabbi/gabbi/tests/test_gabbits_pytest.py yield tests are deprecated

the advice is to use @pytest.mark.parametrize instead.

I investigated this a while ago and found it confusing when compared to the yield idea, but I guess now it is necessary.

[cdent]

@jasonamyers are you wise in the ways of py.test generation?

[cdent]

Based on what I've seen in the pytest docs the best solution, for the long term, is to not do yield tests at all nor build the tests, but instead use an entry point to have a plugin that collects the yaml files at test items. It's not clear how the fixtures would work in that set up.

😿

[cdent]

Fixed by #187