feat(storage): mocking

[dbolduc]

Fixes #2041

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 96.33%. Comparing base (9b6c1f2) to head (44501c2).
⚠️ Report is 4 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3169      +/-   ##
==========================================
- Coverage   96.35%   96.33%   -0.03%     
==========================================
  Files         110      110              
  Lines        4444     4447       +3     
==========================================
+ Hits         4282     4284       +2     
- Misses        162      163       +1     

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