package Dist::Zilla::Plugin::PurePerlTests;
BEGIN {
  $Dist::Zilla::Plugin::PurePerlTests::VERSION = '0.03';
}

use strict;
use warnings;

use Dist::Zilla::File::InMemory;

use Moose;
use Moose::Autobox;

with 'Dist::Zilla::Role::FileGatherer';

has env_var => (
    is       => 'ro',
    isa      => 'Str',
    required => 1,
);

sub gather_files {
    my $self = shift;

    for my $file ( grep { $_->name() =~ m<\At/.+\.t\z> }
        $self->zilla()->files()->flatten() ) {

        $self->_copy_file($file);
    }
}

sub _copy_file {
    my $self = shift;
    my $file = shift;

    ( my $name = $file->name() ) =~ s{/([^/]+)$}{/release-pp-$1};

    my $content = $file->content();

    return if $content =~ /^\#\s*no\s+pp\s+test\s*$/m;

    my $env_var = $self->env_var();

    my $perl_line = q{};

    if ( $content =~ s/^(\#![^\n]+)\n// ) {
        $perl_line = $1;
    }

    $content = <<"EOF";
$perl_line

use Test::More;

BEGIN {
    unless ( \$ENV{RELEASE_TESTING} ) {
        plan skip_all => 'these tests are for testing by the release';
    }

    \$ENV{$env_var} = 1;
}

$content
EOF

    $self->log( 'rewriting ' . $file->name() . " to $name" );

    my $pp_file = Dist::Zilla::File::InMemory->new(
        name    => $name,
        content => $content,
    );

    $self->add_file($pp_file);
}

__PACKAGE__->meta()->make_immutable();

1;

# ABSTRACT: Run all your tests twice, once with XS code and once with pure Perl



=pod

=head1 NAME

Dist::Zilla::Plugin::PurePerlTests - Run all your tests twice, once with XS code and once with pure Perl

=head1 VERSION

version 0.03

=head1 SYNOPSIS

In your F<dist.ini>:

  [PurePerlTests]
  env_var = MY_MODULE_PURE_PERL

=head1 DESCRIPTION

This plugin is for modules which ship with a dual XS/pure Perl implementation.

The plugin makes a copy of all your tests when doing release testing (via
C<dzil test> or C<dzil release>). The copy will set an environment value that
you specify in a C<BEGIN> block. You can use this to force your code to not
load the XS implementation.

=for Pod::Coverage gather_files

=head1 CONFIGURATION

This plugin takes one configuration key, "env_var", which is required.

=head1 SKIPPING TESTS

If you don't want to run the a given test file in pure Perl mode, you can put
a comment like this in your test:

  # no pp test

This must be on a line by itself. This plugin will skip any tests which
contain this comment.

=head1 SUPPORT

Please report any bugs or feature requests to
C<bug-dist-zilla-plugin-pureperltests@rt.cpan.org>, or through the web
interface at L<http://rt.cpan.org>. I will be notified, and then you'll
automatically be notified of progress on your bug as I make changes.

=head1 DONATIONS

If you'd like to thank me for the work I've done on this module, please
consider making a "donation" to me via PayPal. I spend a lot of free time
creating free software, and would appreciate any support you'd care to offer.

Please note that B<I am not suggesting that you must do this> in order for me
to continue working on this particular software. I will continue to do so,
inasmuch as I have in the past, for as long as it interests me.

Similarly, a donation made in this way will probably not make me work on this
software much more, unless I get so many donations that I can consider working
on free software full time, which seems unlikely at best.

To donate, log into PayPal and send money to autarch@urth.org or use the
button on this page: L<http://www.urth.org/~autarch/fs-donation.html>

=head1 AUTHOR

Dave Rolsky <autarch@urth.org>

=head1 COPYRIGHT AND LICENSE

This software is Copyright (c) 2011 by Dave Rolsky.

This is free software, licensed under:

  The Artistic License 2.0 (GPL Compatible)

=cut


__END__