Instead of testing it can't you put it on the rear wheel? The Cobalto levers, which are a kluge before the Chorus ones which include QR kind of pull the cable around a corner and [if in aero mode] fatigue it. I let one sandbag me one filament after another but when it manifested it only startled rather than hurt me. And to be more pedantic I'll remind everybody that the holes were pierced and not drilled.