++ed by:

3 PAUSE users
3 non-PAUSE users.

Karen Etheridge 🐾 🌋
and 4 contributors


Test::Kwalitee - test the Kwalitee of a distribution before you release it


version 1.17


  # in a separate test file

      unless ($ENV{RELEASE_TESTING})
          use Test::More;
          plan(skip_all => 'these tests are for release candidate testing');

  use Test::Kwalitee;


Kwalitee is an automatically-measurable gauge of how good your software is. That's very different from quality, which a computer really can't measure in a general sense. (If you can, you've solved a hard problem in computer science.)

In the world of the CPAN, the CPANTS project (CPAN Testing Service; also a funny acronym on its own) measures Kwalitee with several metrics. If you plan to release a distribution to the CPAN -- or even within your own organization -- testing its Kwalitee before creating a release can help you improve your quality as well.

Test::Kwalitee and a short test file will do this for you automatically.


Create a test file as shown in the synopsis. Run it. It will run all of the potential Kwalitee tests on the current distribution, if possible. If any fail, it will report those as regular diagnostics.

If you ship this test, it will not run for anyone else, because of the RELEASE_TESTING guard. (You can omit this guard if you move the test to xt/release/, which is not run automatically by other users.)

To run only a handful of tests, pass their names to the module in the test argument (either in the use directive, or when calling import directly):

  use Test::Kwalitee tests => [ qw( use_strict has_tests ) ];

To disable a test, pass its name with a leading minus (-):

  use Test::Kwalitee tests => [ qw( -use_strict has_readme ));

The list of each available metric currently available on your system can be obtained with the kwalitee-metrics command (with descriptions, if you pass --verbose or -v, but as of Test::Kwalitee 1.09 and Module::CPANTS::Analyse 0.87, the tests include:

  • buildtool_not_executable

    Build.PL/Makefile.PL should not have an executable bit

  • has_buildtool

    Does the distribution have a build tool file?

  • has_changelog

    Does the distribution have a changelog?

  • has_manifest

    Does the distribution have a MANIFEST?

  • has_meta_yml

    Does the distribution have a META.yml file?

  • has_readme

    Does the distribution have a README file?

  • has_tests

    Does the distribution have tests?

  • no_symlinks

    Does the distribution have no symlinks?

  • metayml_is_parsable

    Can the the META.yml be parsed?

  • metayml_has_license

    Does the META.yml declare a license?

  • proper_libs

    Does the distribution have proper libs?

  • has_working_buildtool

    If using Module::Install, it is at least version 0.61?

  • has_better_auto_install

    If using Module::Install, it is at least version 0.89?

  • has_humanreadable_license

    Is there a LICENSE section in documentation, and/or a LICENSE file present?

  • no_pod_errors

    Does the distribution have no POD errors?

  • valid_signature

    If a SIGNATURE is present, can it be verified?

  • use_strict

    Does the distribution files all use strict?

  • no_cpants_errors

    Were there no errors encountered during CPANTS testing?


With thanks to CPANTS and Thomas Klausner, as well as test tester Chris Dolan.



  • chromatic <chromatic@wgz.org>

  • Karen Etheridge <ether@cpan.org>


This software is copyright (c) 2005 by chromatic.

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


  • Gavin Sherlock <sherlock@cpan.org>

  • Kenichi Ishigaki <ishigaki@cpan.org>

  • Nathan Haigh <nathanhaigh@ukonline.co.uk>