use Test::More tests => 1;
# load module
package MyVal;
use Validation::Class;
package main;
my $v = MyVal->new(
fields => {foobar => {filters => 'lowercase'}},
params => {foobar => '123ABC456DEF'}
);
ok $v->params->{foobar} =~ /^123abc456def$/,
'lowercase filter working as expected';