Add options= to test()

[MichaelChirico]

Closes #5842.

Split from #5845 to remove possibility of conflicts when editing .Rraw files.

[codecov]

Codecov Report

Attention: Patch coverage is 98.63014% with 2 lines in your changes are missing coverage. Please review.

Project coverage is 97.47%. Comparing base (6c1fd83) to head (6b8fa54).
Report is 125 commits behind head on master.

Files	Patch %	Lines
R/test.data.table.R	60.00%	2 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #5996   +/-   ##
=======================================
  Coverage   97.46%   97.47%           
=======================================
  Files          80       80           
  Lines       14822    14864   +42     
=======================================
+ Hits        14447    14489   +42     
  Misses        375      375           

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