Tests fail when unknown argument is present

Observed in Mentat: https://homeproj.cesnet.cz/issues/7592

changed milestone to %0.64

added T-Bug label

assigned to @rajmund_hruska

changed the description

mentioned in commit 5adafa6c

mentioned in merge request !9 (merged)

mentioned in merge request !10 (merged)

closed with commit 5adafa6c

closed with merge request !10 (merged)

mentioned in commit e541296a

mentioned in issue mentat#7592 (closed)