test: add functional vertical flip tests on segmentation mask

[federicopozzi33]

No description provided.

[vfdev-5]

Thanks for the PR @federicopozzi33
I left few comments

[federicopozzi33]

@vfdev-5 I saw that in other previous PRs, such as the ones concerning the affine or rotate primitives, you add two tests for check the correctness: one with random segmentation masks and another with a fixed input.

I skipped the one with random segmentation masks for some reasons:

• I can't figure out how to build the expected mask without calling some "vertical flip" functions.
• I understand that it represents broader check, but then why should we have both? Maybe because the one with fixed input is more readable and clear to read/understand?

[vfdev-5]

I can't figure out how to build the expected mask without calling some "vertical flip" functions.

@federicopozzi33 I think it is enough as you did as vflip is not that complicated op.

I understand that it represents broader check, but then why should we have both? Maybe because the one with fixed input is more readable and clear to read/understand?

Affine/rotate ops are configurable and the first correctness check is generating hundreds of subtests running on CPU only. On the other hand, fixed input correctness check is testing the op on a single test-case and on CUDA and CPU. This is a trade-off between CI runtime and exhaustive op checking.

[vfdev-5]

@federicopozzi33 LGTM, thanks for the PR !

[datumbox]

LGTM, thanks!

[datumbox]

@federicopozzi33 Ooops there are conflicts with main branch. Could you please resolve so that we can merge?

[vfdev-5]

@datumbox I can fix them quickly right now