use strict;
use warnings;

package MyRole;
use Moo::Role;

sub call {
    my $self = shift;
    return undef;
}

package MyClass;
use Moo;
with 'MyRole';

around call => sub {
    my ($orig, $self) = @_; 
    my $document = $self->$orig;
    unless ($document) {
        die 'Error';
    }   
    return $document;
};

package main;
use Test::More;
no strict 'refs';
no warnings qw/redefine once/;

*MyClass::call = sub { "tada!" };

ok my $class = MyClass->new();
ok $class->call();

done_testing;