• done_testing

I am not a fan of it, but in rare cases it is useful to know that done_testing can be used to signal all tests have been done. This way we don't need to have a "plan".

use strict;
use warnings;

use MySimpleCalc qw(sum);

use Test::More;

is sum(1, 1), 2,  '1+1';
is sum(2, 2), 4,  '2+2';

done_testing;