is(\&OK, \&Maypole::Constants::OK, 'exports OK');
is(OK(), 0, 'OK correctly defined');
is(\&ERROR, \&Maypole::Constants::ERROR, 'exports ERROR');
is(\&OK, \&Maypole::Constants::OK, 'exports OK');
is(OK(), 0, 'OK correctly defined');
is(\&ERROR, \&Maypole::Constants::ERROR, 'exports ERROR');