--- /dev/null
+#!/usr/bin/perl -w
+
+print "1..4\n";
+
+use strict;
+use URI;
+
+my $uri = URI->new("http://www.example.com/foo/bar/");
+
+print "not " unless $uri->rel("http://www.example.com/foo/bar/") eq "./";
+print "ok 1\n";
+
+print "not " unless $uri->rel("HTTP://WWW.EXAMPLE.COM/foo/bar/") eq "./";
+print "ok 2\n";
+
+print "not " unless $uri->rel("HTTP://WWW.EXAMPLE.COM/FOO/BAR/") eq "../../foo/bar/";
+print "ok 3\n";
+
+print "not " unless $uri->rel("HTTP://WWW.EXAMPLE.COM:80/foo/bar/") eq "./";
+print "ok 4\n";
+