use strict; use warnings; use Test::More tests => 1; use HTML::FormFu; my $form = HTML::FormFu->new; $form->config_callback( { plain_value => sub { return if !defined $_; s/Foo/Bar/; } } ); $form->load_config_file('t/form/config_callback.yml'); is( $form->get_field('foo')->label, 'Bar' );