#!perl

use strict;             # restrict unsafe constructs

use warnings;           # enable optional warnings

use Test::More;

if (!$ENV{TEST_SIGNATURE}) {

    plan skip_all =>

      "Set the environment variable TEST_SIGNATURE to enable this test.";

}

elsif (!eval { require Module::Signature; 1 }) {

    plan skip_all =>

      "Next time around, consider installing Module::Signature, ".

      "so you can verify the integrity of this distribution.";

}

elsif (!-e 'SIGNATURE') {

    plan skip_all => "SIGNATURE not found";

}

elsif (!-s 'SIGNATURE') {

    plan skip_all => "SIGNATURE file empty";

}

elsif (!eval { require Socket; Socket::inet_aton('pool.sks-keyservers.net') }) {

    plan skip_all => "Cannot connect to the keyserver to check module ".

                     "signature";

}

else {

    plan tests => 1;

}

my $ret = Module::Signature::verify();

SKIP: {

    skip "Module::Signature cannot verify", 1

      if $ret eq Module::Signature::CANNOT_VERIFY();

    cmp_ok $ret, '==', Module::Signature::SIGNATURE_OK(), "Valid signature";

}