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Test::Pod::LinkCheck - Tests POD for invalid links


  This document describes v0.005 of Test::Pod::LinkCheck - released February 21, 2011 as part of Test-Pod-LinkCheck.


        use strict; use warnings;

        use Test::More;

        eval "use Test::Pod::LinkCheck";
        if ( $@ ) {
                plan skip_all => 'Test::Pod::LinkCheck required for testing POD';
        } else {


This module looks for any links in your POD and verifies that they point to a valid resource. It uses the Pod::Simple parser to analyze the pod files and look at their links. In a nutshell, it looks for L<Foo> links and makes sure that Foo exists. It also recognizes section links, L</SYNOPSIS> for example. Also, manpages are resolved and checked.

This module does NOT check "http" links like L<http://www.google.com> in your pod. For that, please check out Test::Pod::No404s.

Normally, you wouldn't want this test to be run during end-user installation because they might not have the modules installed! It is HIGHLY recommended that this be used only for module authors' RELEASE_TESTING phase. To do that, just modify the synopsis to add an env check :)

This module normally uses the OO method to run tests, but you can use the functional style too. Just explicitly ask for the all_pod_ok or pod_ok function to be imported when you use this module.

        use strict; use warnings;
        use Test::Pod::LinkCheck qw( all_pod_ok );



If enabled, this module will check the CPAN module database to see if a link is a valid CPAN module or not. It uses the backend defined in "cpan_backend" to do the actual searching.

If disabled, it will resolve links based on locally installed modules. If it isn't installed it will be an error!

The default is: true


Selects the CPAN backend to use for querying modules. The available ones are: CPANPLUS, CPAN, and CPANSQLite.

The default is: CPANPLUS

        The backends were tested and verified against those versions. Older versions would work, but is untested!
                CPANPLUS v0.9010
                CPAN v1.9402
                CPAN::SQLite v0.199


Enable to automatically try the CPAN backends to find an available one. It will try the backends in the order defined in "cpan_backend"

If no backend is available, it will disable the "check_cpan" attribute and enable the "cpan_section_err" attribute.

The default is: true


If enabled, a link pointing to a CPAN module's specific section is treated as an error if it isn't installed.

The default is: false


If enabled, this module will print extra diagnostics for the links it's checking.

The default is: false



Accepts the filename to check, and an optional test name.

This method will pass the test if there is no POD links present in the POD or if all links are not an error. Furthermore, if the POD was malformed as reported by Pod::Simple, the test will fail and not attempt to check the links.

When it fails, this will show any failing links as diagnostics. Also, some extra information is printed if verbose is enabled.

The default test name is: "LinkCheck test for FILENAME"


Accepts an optional array of files to check. By default it uses all POD files in your distribution.

This method is what you will usually run. Every file is passed to the "pod_ok" function. This also sets the test plan to be the number of files.



This module uses the CPANPLUS and CPAN modules as the backend to verify valid CPAN modules. Please make sure that the backend you choose is properly configured before running this! This means the index is updated, permissions is set, and whatever else the backend needs to properly function. If you don't want to use them please disable the "check_cpan" attribute.

If this module fails to check CPAN modules or the testsuite fails, it's probably because of the above reason.

CPAN module sections

One limitation of this module is that it can't check for valid sections on CPAN modules if they aren't installed. If you want that to be an error, please enable the "cpan_section_err" attribute.


Please see those modules/websites for more information related to this module.



You can find documentation for this module with the perldoc command.

  perldoc Test::Pod::LinkCheck


The following websites have more information about this module, and may be of help to you. As always, in addition to those websites please use your favorite search engine to discover more resources.


You can email the author of this module at APOCAL at cpan.org asking for help with any problems you have.

Internet Relay Chat

You can get live help by using IRC ( Internet Relay Chat ). If you don't know what IRC is, please read this excellent guide: http://en.wikipedia.org/wiki/Internet_Relay_Chat. Please be courteous and patient when talking to us, as we might be busy or sleeping! You can join those networks/channels and get help:

  • irc.perl.org

    You can connect to the server at 'irc.perl.org' and join this channel: #perl-help then talk to this person for help: Apocalypse.

  • irc.freenode.net

    You can connect to the server at 'irc.freenode.net' and join this channel: #perl then talk to this person for help: Apocal.

  • irc.efnet.org

    You can connect to the server at 'irc.efnet.org' and join this channel: #perl then talk to this person for help: Ap0cal.

Bugs / Feature Requests

Please report any bugs or feature requests by email to bug-test-pod-linkcheck at rt.cpan.org, or through the web interface at http://rt.cpan.org/NoAuth/ReportBug.html?Queue=Test-Pod-LinkCheck. You will be automatically notified of any progress on the request by the system.

Source Code

The code is open to the world, and available for you to hack on. Please feel free to browse it and play with it, or whatever. If you want to contribute patches, please send me a diff or prod me to pull from your repository :)


  git clone git://github.com/apocalypse/perl-test-pod-linkcheck.git


Apocalypse <APOCAL@cpan.org>


This software is copyright (c) 2011 by Apocalypse.

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.

The full text of the license can be found in the LICENSE file included with this distribution.