Test improvement follow-up

[christiangnrd]

As mentioned by @maleadt in #382 (comment), I'm changing the check to be for backend support instead of current default backend since they tests barely affect CI timing and it's good to test that non-default backend work when supported.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 78.72%. Comparing base (b58747a) to head (9e2952d).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #387      +/-   ##
==========================================
- Coverage   79.01%   78.72%   -0.30%     
==========================================
  Files          12       12              
  Lines         672      672              
==========================================
- Hits          531      529       -2     
- Misses        141      143       +2     

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