test(utils): increate unit test coverage

[sebastijankuzner]

Summary

Checklist

• Tests (if necessary)
• Ready to be merged

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 80.32%. Comparing base (f1a2025) to head (54d4246).

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #1514      +/-   ##
===========================================
+ Coverage    79.79%   80.32%   +0.53%     
===========================================
  Files          955      965      +10     
  Lines        17133    17523     +390     
  Branches      2532     2603      +71     
===========================================
+ Hits         13671    14076     +405     
+ Misses        3457     3439      -18     
- Partials         5        8       +3     

Flag	Coverage Δ
contracts	91.95% <ø> (?)
packages	80.03% <100.00%> (+0.23%)	⬆️

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