NAME
Dist::Zilla::Plugin::Test::CheckBreaks - Generate a test that shows your conflicting modules
VERSION
version 0.002
SYNOPSIS
In your dist.ini:
[CheckBreaks]
conflicts_module = Moose::ConflictsDESCRIPTION
This is a Dist::Zilla plugin that runs at the gather files stage, providing a test file that runs last in your test suite and checks for conflicting modules, as indicated by x_breaks in your distribution metadata. (See the t/zzz-check-breaks.t test in this distribution for an example.)
x_breaks entries are expected to be version ranges, with one addition, for backwards compatibility with [Conflicts]: if a bare version number is specified, it is interpreted as '<= $version' (to preserve the intent that versions at or below the version specified are those considered to be broken). It is possible that this interpretation will be removed in the future; almost certainly before breaks becomes a formal part of the meta specification.
CONFIGURATION
conflicts_module
The name of the conflicts module to load and invoke the check_conflicts method on. Defaults to the name of the main module with ::Conflicts appended, such as what is generated by the [Conflicts] plugin.
If your distribution uses Moose but does not itself generate a conflicts plugin, then Moose::Conflicts is an excellent choice, as there are numerous interoperability conflicts catalogued in that module.
There is no error if the module does not exist. This test does not require [Conflicts] to be used in your distribution; this is only a feature added for backwards compatibility.
BACKGROUND
I came upon this idea for a test after handling a bug report I've seen many times before when dealing with Moose code: "hey, when I updated Moose, my other thing that uses Moose stopped working!" For quite some time Moose has generated breakage information in the form of the moose-outdated executable and a check in Makefile.PL (which uses the generated module Moose::Conflicts), but the output is usually buried in the user's install log or way up in the console buffer, and so doesn't get acted on nearly as often as it should. I realized it would be a simple matter to re-run the executable at the very end of tests by crafting a filename that always sorts (and runs) last, and further that we could generate this test. This coincided nicely with conversations on irc #toolchain about the x_breaks metadata field and plans for its future. Therefore, this distribution, and its sister plugin [Breaks] were born!
SEE ALSO
The Annotated Lancaster Consensus at "Improving on 'conflicts'"
AUTHOR
Karen Etheridge <ether@cpan.org>
COPYRIGHT AND LICENSE
This software is copyright (c) 2014 by Karen Etheridge.
This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.