Use Net::LDAP::Server::Test. Specifically, in the test directory, use 01-ldap.t.

Here's how I used your code:

#!/usr/bin/perl

use strict;
use warnings;
use Net::LDAPS;

my $ldap = Net::LDAPS->new(
    server => 'ldaps://127.0.0.1',
    verify => 'require',
    capath => '/etc/openssl/cacerts/'
) or die $@;
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At first, I tried 'localhost', but it kept coming back at me with a 'badname' exception. Also, I used 'ldaps://' for the server. It worked.