Add tests for StudyWrapper constructor argument handling

[hrntsm]

Reference Issues/PRs

What does this implement/fix? Explain your changes.

Add tests for StudyWrapper constructor argument handling

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 45.65%. Comparing base (7a97698) to head (4776572).
Report is 1 commits behind head on develop.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop     #417      +/-   ##
===========================================
+ Coverage    45.55%   45.65%   +0.09%     
===========================================
  Files           67       67              
  Lines         3029     3029              
  Branches       332      332              
===========================================
+ Hits          1380     1383       +3     
+ Misses        1610     1608       -2     
+ Partials        39       38       -1     

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[codeclimate]

Code Climate has analyzed commit f5a9f70 and detected 0 issues on this pull request.

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