add more unit tests

[synfinatic]

No description provided.

[codecov]

Codecov Report

Merging #172 (760d61f) into main (9e84643) will increase coverage by 1.88%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main     #172      +/-   ##
==========================================
+ Coverage   42.07%   43.96%   +1.88%     
==========================================
  Files          10       10              
  Lines        1483     1483              
==========================================
+ Hits          624      652      +28     
+ Misses        811      779      -32     
- Partials       48       52       +4     

Impacted Files	Coverage Δ
storage/keyring.go	53.12% <0.00%> (+14.58%)	⬆️

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