tests: make FakeInput usage less suspicious for code checkers

[ThomasWaldmann]

No description provided.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 83.31%. Comparing base (de0f7ac) to head (07a1c34).
⚠️ Report is 19 commits behind head on master.
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #9633      +/-   ##
==========================================
- Coverage   83.31%   83.31%   -0.01%     
==========================================
  Files          89       89              
  Lines       15549    15549              
  Branches     2343     2343              
==========================================
- Hits        12955    12954       -1     
  Misses       1838     1838              
- Partials      756      757       +1     

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[github-actions]

Backport failed for 1.4-maint, because it was unable to cherry-pick the commit(s).

Please cherry-pick the changes locally and resolve any conflicts.

git fetch origin 1.4-maint
git worktree add -d .worktree/backport-9633-to-1.4-maint origin/1.4-maint
cd .worktree/backport-9633-to-1.4-maint
git switch --create backport-9633-to-1.4-maint
git cherry-pick -x 07a1c341ca7a05f63c4b3a21545dc75841a53d32