[Tests] Improve test coverage of features module

[ByteOtter]

What this PR does / why we need it:

This PR improves test coverage of the features module by covering two previously uncovered modules: cname_main.py and __main__.py

Which issue(s) this PR fixes:
Fixes #159
Tracks #138

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 84.98%. Comparing base (9c1798d) to head (eeaf480).
⚠️ Report is 10 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff             @@
##             main     #162       +/-   ##
===========================================
+ Coverage   72.73%   84.98%   +12.24%     
===========================================
  Files          27       27               
  Lines        1192     1192               
===========================================
+ Hits          867     1013      +146     
+ Misses        325      179      -146     

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