use Test::More tests => 1; # load module package MyVal; use Validation::Class; package main; my $v = MyVal->new( fields => { foobar => { filters => 'alphanumeric' } }, params => { foobar => '1@%23abc45@%#@#%6d666ef..' } ); ok $v->params->{foobar} =~ /^123abc456d666ef$/, 'alphanumeric filter working as expected';