Edit file File name : no_diag.t Content :#!/usr/bin/perl -w use Test::More 'no_diag'; plan 'skip_all' => "This test cannot be run with the current formatter" unless Test::Builder->new->{Stack}->top->format->isa('Test::Builder::Formatter'); pass('foo'); diag('This should not be displayed'); is(Test::More->builder->no_diag, 1); done_testing; Save