#!perl

use strict;
use warnings;

use Test::More;

use Pinto::PrerequisiteWalker;

use lib 't/lib';
use Pinto::Tester;

#------------------------------------------------------------------------------

# Module::Build was first introduced in perl 5.9.4 as 0.2805
# Module::Build~0.2808_01 entered perl in 5.10.0

my $t = Pinto::Tester->new;
$t->populate('AUTHOR/Foo-1 = Foo-1 & Bar~1, perl~5.6.0, strict');
$t->populate('AUTHOR/Bar-1 = Bar-1 & Module::Build~0.2808_01');

my $dist = $t->pinto->repo->get_distribution(path => 'A/AU/AUTHOR/Foo-1.tar.gz');
ok defined $dist, 'Got Foo distribution from repo';

my @total_prereqs = $dist->prerequisites;
is scalar @total_prereqs, 3, 'Dist Foo has correct number of prereqs';

#------------------------------------------------------------------------------

my %bar  = ('Bar'           => '1');
my %mb   = ('Module::Build' => '0.2808_01');
my %core = ('perl'          => 'v5.6.0', 'strict' => '0');

my %test_cases = (
	'v5.10.0' => {%bar             },
	'v5.9.4'  => {%bar, %mb        },
	'v5.6.0'  => {%bar, %mb        },
	'0'       => {%bar, %mb, %core },
);

while( my($pv, $expect) = each %test_cases) {

	my $walked_prereqs = {};

	my $cb  = sub { 
		my ($prereq) = @_;
		$walked_prereqs->{$prereq->package_name} = $prereq->package_version;
	    return $t->pinto->repo->get_distribution(spec => $prereq->as_spec);
	};

	# If $pv is not a true value, then do not make a filter
	my %filter = $pv ? (filter => sub {$_[0]->is_perl || $_[0]->is_core(in => $pv)} ) : ();

	my $walker = Pinto::PrerequisiteWalker->new(start => $dist, callback => $cb, %filter);
	while ($walker->next) {};

	my $test_name = "Got expected prereqs against perl version $pv";
	is_deeply $walked_prereqs, $expect, $test_name;
}

#------------------------------------------------------------------------------

done_testing;