make unit tests backwards compatible without pending kernels

[Zsailer]

Fixes #666.

[codecov-commenter]

Codecov Report

Merging #669 (bb047b4) into main (d3bc6bf) will increase coverage by 0.09%.
The diff coverage is 90.76%.

@@            Coverage Diff             @@
##             main     #669      +/-   ##
==========================================
+ Coverage   77.79%   77.88%   +0.09%     
==========================================
  Files         110      110              
  Lines       10409    10456      +47     
  Branches     1399     1402       +3     
==========================================
+ Hits         8098     8144      +46     
+ Misses       1922     1920       -2     
- Partials      389      392       +3     

Impacted Files	Coverage Δ
jupyter_server/pytest_plugin.py	84.16% <54.54%> (-1.68%)	⬇️
jupyter_server/tests/services/sessions/test_api.py	96.61% <97.82%> (+0.02%)	⬆️
jupyter_server/tests/services/kernels/test_api.py	95.13% <100.00%> (+0.24%)	⬆️
jupyter_server/tests/services/kernels/test_cull.py	100.00% <100.00%> (ø)
jupyter_server/utils.py	65.90% <0.00%> (-0.57%)	⬇️
jupyter_server/services/kernels/kernelmanager.py	82.53% <0.00%> (+1.90%)	⬆️

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[blink1073]

Thanks!

[blink1073]

We need to remove this config and instead add the argument to the test invocations in the workflows, since we no longer support doctest in the link check job

[Zsailer]

@blink1073, thanks! done 👍

[blink1073]

You can revert the doctest-related changes, we fixed this in jupyter-server/jupyter_releaser#246

[blink1073]

We picked up a couple merge conflicts from #673