test: add sample case 'Msgext_Search_Python'

[Annefch]

No description provided.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 89.24%. Comparing base (0859a28) to head (dbb3be7).
⚠️ Report is 1 commits behind head on dev.

Additional details and impacted files

@@           Coverage Diff            @@
##              dev   #15187    +/-   ##
========================================
  Coverage   89.24%   89.24%            
========================================
  Files         618      618            
  Lines       37993    37993            
  Branches     7690     7535   -155     
========================================
  Hits        33905    33905            
  Misses       1972     1972            
  Partials     2116     2116            

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