Fixes #11 - Correctly handle boolean flags

[inno]

* Correct tests silently passing due to unpatched global

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.00%. Comparing base (7475df8) to head (b48ea3f).
Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##              main       #12   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            2         2           
  Lines          336       334    -2     
  Branches        84        83    -1     
=========================================
- Hits           336       334    -2     

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