Fix warnings in tests

[hyperrealist]

This addresses #230

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 89.33%. Comparing base (46cf8af) to head (42bcb3d).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #267   +/-   ##
=======================================
  Coverage   89.33%   89.33%           
=======================================
  Files          45       45           
  Lines        2269     2269           
=======================================
  Hits         2027     2027           
  Misses        242      242           

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[GDYendell]

Awesome, thanks @hyperrealist !