feat: add unit tests for pkg

[vishal-chdhry]

Explanation

added unit tests

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 21.62%. Comparing base (3ac1b40) to head (9bf53a2).
⚠️ Report is 113 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #337      +/-   ##
==========================================
- Coverage   21.65%   21.62%   -0.03%     
==========================================
  Files          85       85              
  Lines        3367     3367              
==========================================
- Hits          729      728       -1     
+ Misses       2567     2561       -6     
- Partials       71       78       +7     

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