Make DriverTestCase generic

[jenshnielsen]

Make it such that the type checker can infer the type of self.instrument within the test

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 59.77%. Comparing base (45a7539) to head (39edafd).
⚠️ Report is 48 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #7643   +/-   ##
=======================================
  Coverage   59.77%   59.77%           
=======================================
  Files         351      351           
  Lines       31654    31655    +1     
=======================================
+ Hits        18921    18922    +1     
  Misses      12733    12733           

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