Add @CartesianEnumSource

[scordio]

I am currently looking for a way to provide Enum values as input of a cartesian product test.

I understand it can be achieved with a static factory method, but having something like a @CartesianEnumSource which mimics the JUnit @EnumSource including names and mode parameters would be really nice.

If this sounds reasonable, I am happy to give it a shot (probably taking inspiration from #321).

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Bonus topic: it would be also nice to have a @CartesianArgumentSource which would allow plugging in a custom ArgumentProvider implementation. Maybe this deserves a separate issue, but I'm not sure yet about its feasibility.

[Michael1993]

How CartesianProductTest interacts with arguments sources will change soon. Once that is done, I will update the documentation to reflect these changes - i.e.: How you can write your own ArgumentsProvider for CartesianProductTest using API provided by Pioneer (it's almost like with JUnit just slightly different interfaces). This should also make implementing @CartesianEnumSource fairly trivial.

The issue as it is, is kind of blocked by the coming change, unfortunately. If you don't need this feature urgently, this will probably be implemented in about a month or so. Does that work?

Regarding the issue being feasible: Sounds great, I think the easier it is to "migrate" to CartesianProductTest from ParameterizedTest the better. 👍

[scordio]

Thanks for the quick feedback, good to know that something in this direction was already on the table 🙂

I would definitely wait for the change, but please do let me know if there is anything that can be picked up to accelerate.

[Michael1993]

Feel free to review the PR implementing the change. All feedback is appreciated.

[scordio]

@Michael1993 now that #362 is merged, I would be happy to put something together to support @CartesianEnumSource, just let me know if I can go ahead with it.

[Michael1993]

Sure, feel free to put something together!