The tests are run as part of the regular building of the package,
just
    t/21-proxy.t ..skipped: Proxy testing requires POE and WWW::Curl::Simple
is left for a more ambitious later maintainer of this package.

Tests for the upstream author to check if everything is fine before
releasing t/00-distribution.t skipped as well, see
   https://lists.alioth.debian.org/pipermail/debian-med-packaging/2016-January/038051.html

The build dependencies
 libtest-pod-coverage-perl, libtest-distribution-perl
are only installed for the extended testing already.

