I do it like I do it in Pod::Stripper and HTML::LinkExtractor. Here's the jist of it 
package Buttersquash;
sub foo { 'bar' }
sub bar { 'foo' }

package main;
unless(caller()){
    print "1..3\n";
    print "ok 1\n";
    print "not " if  Buttersquash->foo ne 'bar';
    print "ok 2\n";
    print "not " if  Buttersquash->bar ne 'foo';
    print "ok 3\n";
}

=head1 SELF CONTAINED TEST

If you already installed this, simply run this oneliner

# on nix
    perl -MButtersquash -e' exec $^X, $INC{q[Buttersquash.pm]}'

# on windows
    perl -MButtersquash -e" exec $^X, $INC{q[Buttersquash.pm]}"

or simply

    perl Buttersquash.pm

=cut

[download]
Other already available options is Test::Inline (formerly Pod::Tests) by our favorite b*#@! Schwern ;)

MJD says you can't just make shit up and expect the computer to know what you mean, retardo!
** The Third rule of perl club is a statement of fact: pod is sexy.

In reply to Re: RFC: Runnable test code integrated into Modules. by PodMaster
in thread RFC: Runnable test code integrated into Modules. by BrowserUk

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