Add test job for config input

[crazy-max]

Follow-up #67

We can see config is effectively used:

Signed-off-by: CrazyMax crazy-max@users.noreply.github.com

[codecov-commenter]

Codecov Report

Merging #68 (f4b1b8d) into master (316c3e4) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master      #68   +/-   ##
=======================================
  Coverage   76.51%   76.51%           
=======================================
  Files           5        5           
  Lines         132      132           
  Branches       20       20           
=======================================
  Hits          101      101           
  Misses         23       23           
  Partials        8        8           

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