Enable tests requiring at least version 0.88 if requirement is met

[stefan6419846]

At the moment, two tests will always be skipped as they require at least poppler 0.88 which might not be available in all environments. When building own wheels for the package, it would be nice to be able to run them nevertheless if at least version 0.88 is available to verify the correct behavior before uploading.

It might make sense to expose the poppler version embedded into the Python package as well, due to it being rather variable and by (nearly) no means tied to a specific version of this package at all.

[jalan]

Good idea, will do.

It might make sense to expose the poppler version embedded into the Python package as well

Poppler's not embedded, but dynamically loaded, but yeah, I'll look into this too.

[stefan6419846]

Poppler's not embedded, but dynamically loaded, but yeah, I'll look into this too.

I am aware of that and might have used a wrong wording here - we primarily link against the corresponding libraries. Speaking of manylinux wheels, there still are shared objects linked in, but as they are part of the actual wheel, one might consider them "embedded".

[jalan]

one might consider them "embedded"

Good point--in the context of wheels that makes sense 👍