Why should it not work?

Because I assumed that this will require BUILD_REQUIRES to be set and the default ExtUtils::MakeMaker version that shipped with 5.6 dint have it.

Why don't you try it?

I did and am yet to get it to work ( even on higher versions ) - Will reply once I find a way to get it to work or I give up, meanwhile - Did you?

Update: I Managed it with a require 't/tests.pm'. I am not sure that thats what choroba meant though.