chore: revert deleted assert in single_test.go

[cheb0]

Description

assertSearch call was deleted during conflicts resolve

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[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 71.89%. Comparing base (35ff546) to head (6af53f8).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #251      +/-   ##
==========================================
+ Coverage   71.84%   71.89%   +0.04%     
==========================================
  Files         199      199              
  Lines       14570    14570              
==========================================
+ Hits        10468    10475       +7     
+ Misses       3368     3363       -5     
+ Partials      734      732       -2     

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