Fix generate_cell_offsets test

[StefRe]

Overview

Fix generate_cell_offsets test to make it check at least anything (shortcut method generate_cell_offsets returns the same offsets as the explicit generate_cell_offsets_loop method.

Resolves #2211.

[codecov]

Codecov Report

Merging #2708 (865b913) into main (bcf1501) will increase coverage by 0.05%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main    #2708      +/-   ##
==========================================
+ Coverage   93.70%   93.76%   +0.05%     
==========================================
  Files          75       75              
  Lines       16178    16148      -30     
==========================================
- Hits        15160    15141      -19     
+ Misses       1018     1007      -11     

[akaszynski]

Thanks for your contribution!

Please be sure to install pre-commit following our directions in the Contributing Style Guide. This way we can all automatically follow a similar documentation format.

After installing it, you'll want to run pre-commit run --all-files to clean up this PR. Should take a second and then I can approve it.

[StefRe]

@akaszynski Sorry and thanks for the explanation (black added a trailing comma in the function call which I personally find a bit unusual, but OK).

I had an error installing pre-commit which could be easily resolved using the workaround described in pre-commit/pre-commit#2178 (comment). Maybe it's worth - for the time being - to add a note with this link to the documentation in https://github.com/pyvista/pyvista/blob/main/CONTRIBUTING.rst#style-checking.

[akaszynski]

LGTM. Thanks!