[frontend] filter utils tests

[Archidoit]

Proposed changes

Add tests for some functions in filtersUtils to prevent issues

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 66.30%. Comparing base (c7a29d4) to head (d0985f9). Report is 30 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #8718   +/-   ##
=======================================
  Coverage   66.29%   66.30%           
=======================================
  Files         597      597           
  Lines       60949    60949           
  Branches     6258     6263    +5     
=======================================
+ Hits        40407    40412    +5     
+ Misses      20542    20537    -5     

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