Add tests for src/flavors module

[ByteOtter]

What this PR does / why we need it:

This PR adds unittests for the previously untested flavors module in pursuit of our goal for better coverage

Which issue(s) this PR fixes:
Fixes #157
Tracks #138

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 72.73%. Comparing base (1bac212) to head (3c6b7c0).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #158      +/-   ##
==========================================
+ Coverage   63.00%   72.73%   +9.73%     
==========================================
  Files          27       27              
  Lines        1192     1192              
==========================================
+ Hits          751      867     +116     
+ Misses        441      325     -116     

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