Add tests on basic PyStackRef functions #139716
Description
Feature or enhancement
Proposal:
Definitions of basic PyStackRef manipulation functions aren't so easy.
There are a lot of them, they have connections to each other and we have 3 variants of them now (GIL, no-GIL, PyStackRef debug).
It's easy to forget something when provide some change to them.
In fact, there is one of such issues for PyStackRef debug build: #135125
I propose to add tests that ensure all basic PyStackRef functions are correct in combination.
I've already have a PR.
Has this already been discussed elsewhere?
This is a minor feature, which does not need previous discussion elsewhere
Links to previous discussion of this feature:
No response