test: add more test cases for pathToFileURL

[RafaelGSS]

Just to make sure we won't introduce any regression anytime further (based on H1 reports we received).

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 90.03%. Comparing base (c24e552) to head (875c813).
⚠️ Report is 3 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #63293      +/-   ##
==========================================
- Coverage   90.05%   90.03%   -0.02%     
==========================================
  Files         714      714              
  Lines      225247   225247              
  Branches    42578    42573       -5     
==========================================
- Hits       202842   202804      -38     
- Misses      14181    14229      +48     
+ Partials     8224     8214      -10     

see 39 files with indirect coverage changes

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