Add Xgboost unit tests

[thomasmeissnercrm]

No description provided.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 89.19%. Comparing base (096b5a8) to head (de80ed3).
⚠️ Report is 4 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #62      +/-   ##
==========================================
+ Coverage   87.70%   89.19%   +1.49%     
==========================================
  Files         104      106       +2     
  Lines       11035    11152     +117     
==========================================
+ Hits         9678     9947     +269     
+ Misses       1357     1205     -152     

Flag	Coverage Δ
pytest	89.19% <100.00%> (+1.49%)	⬆️

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