test: fix stability

[alexander-akait]

This PR contains a:

• bugfix
• new feature
• code refactor
• test update
• documentation update
• typo fix
• metadata update

Motivation / Use-Case

improve stability

Breaking Changes

No

Additional Info

No

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 96.24%. Comparing base (a703004) to head (20f2db1).
Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #2119   +/-   ##
=======================================
  Coverage   96.24%   96.24%           
=======================================
  Files          13       13           
  Lines         878      878           
  Branches      255      255           
=======================================
  Hits          845      845           
  Misses         33       33           

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