Test Refactoring

[adlio]

Incremental PR to improve testing

[codecov]

Codecov Report

Merging #9 (678fab6) into main (c9f0eb6) will decrease coverage by 0.53%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main       #9      +/-   ##
==========================================
- Coverage   97.60%   97.06%   -0.54%     
==========================================
  Files           7        7              
  Lines         292      307      +15     
==========================================
+ Hits          285      298      +13     
- Misses          4        5       +1     
- Partials        3        4       +1     

Impacted Files	Coverage Δ
postgres.go	100.00% <100.00%> (ø)
sqlite.go	91.66% <100.00%> (ø)
file.go	93.54% <0.00%> (-6.46%)	⬇️

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