[ISSUE #8814] Add more test coverage for ControllerClosure

[yx9o]

Fixes #8814 .

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 47.48%. Comparing base (0c4064d) to head (06cbe02).
Report is 1 commits behind head on develop.

Additional details and impacted files

@@              Coverage Diff              @@
##             develop    #8815      +/-   ##
=============================================
- Coverage      47.52%   47.48%   -0.04%     
+ Complexity     11611    11601      -10     
=============================================
  Files           1283     1283              
  Lines          89911    89911              
  Branches       11577    11577              
=============================================
- Hits           42731    42696      -35     
- Misses         41948    41978      +30     
- Partials        5232     5237       +5     

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