[issue22002] Make full use of test discovery in test subpackages

[Zachary Ware]

Zachary Ware added the comment:

Thank you, Brett and David.

@Mark: This issue is a continuation of the #16748 effort (#16748 is a meta-issue for this kind of thing) and unrelated to #10572 (though this will add a feature to test.support that can be useful for the scattered test packages).

----------

_______________________________________
Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue22002>
_______________________________________