improve test coverage

[bartman]

mostly silly tests to improve coverage

https://app.codecov.io/gh/bartman/git-wip

[codecov-commenter]

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Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 78.14%. Comparing base (bb1bcec) to head (fcfda64).
⚠️ Report is 1 commits behind head on master.
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Additional details and impacted files

@@            Coverage Diff             @@
##           master      #49      +/-   ##
==========================================
+ Coverage   71.28%   78.14%   +6.85%     
==========================================
  Files          17       17              
  Lines         700      700              
  Branches      116      120       +4     
==========================================
+ Hits          499      547      +48     
+ Misses        201      153      -48     

Flag	Coverage Δ
unittests	78.14% <ø> (+6.85%)	⬆️

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see 10 files with indirect coverage changes

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