create unites for regex checks

[kaplanelad]

test regex checks #102

[codecov-commenter]

Codecov Report

Base: 64.34% // Head: 65.62% // Increases project coverage by +1.27% 🎉

Coverage data is based on head (ae72622) compared to base (dc162a9).
Patch coverage: 100.00% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #107      +/-   ##
==========================================
+ Coverage   64.34%   65.62%   +1.27%     
==========================================
  Files          10       11       +1     
  Lines         861      893      +32     
==========================================
+ Hits          554      586      +32     
  Misses        307      307              

Impacted Files	Coverage Δ
shellfirm/tests/checks.rs	100.00% <100.00%> (ø)

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