use strict;

use warnings;

use CPAN::Meta::Requirements;

use Test::More 0.88;

sub dies_ok (&@) {

  my ($code, $qr, $comment) = @_;

  no warnings 'redefine';

  local *Regexp::CARP_TRACE  = sub { "<regexp>" };

  my $lived = eval { $code->(); 1 };

  if ($lived) {

    fail("$comment: did not die");

  } else {

    like($@, $qr, $comment);

  }

}

{

  my $string_hash = {

    Left   => 10,

    Shared => '>= 2, <= 9, != 7',

    Right  => 18,

  };

  my $req = CPAN::Meta::Requirements->from_string_hash($string_hash);

  is_deeply(

    $req->as_string_hash,

    $string_hash,

    "we can load from a string hash",

  );

}

SKIP: {

  skip "Can't tell v-strings from strings until 5.8.1", 1

    unless $] gt '5.008';

  my $string_hash = {

    Left   => 10,

    Shared => '= 2',

    Right  => 18,

  };

  dies_ok { CPAN::Meta::Requirements->from_string_hash($string_hash) }

    qr/Can't convert/,

    "we die when we can't understand a version spec";

}

{

  my $undef_hash = { Undef => undef };

  my $z_hash = { ZeroLength => '' };

  my $warning;

  local $SIG{__WARN__} = sub { $warning = join("\n",@_) };

  my $req = CPAN::Meta::Requirements->from_string_hash($undef_hash);

  like ($warning, qr/Undefined requirement.*treated as '0'/, "undef requirement warns");

  $req->add_string_requirement(%$z_hash);

  like ($warning, qr/Undefined requirement.*treated as '0'/, "'' requirement warns");

  is_deeply(

    $req->as_string_hash,

    { map { ($_ => 0) } keys(%$undef_hash), keys(%$z_hash) },

    "undef/'' requirements treated as '0'",

  );

}

SKIP: {

  skip "Can't tell v-strings from strings until 5.8.1", 2

    unless $] gt '5.008';

  my $string_hash = {

    Left   => 10,

    Shared => v50.44.60,

    Right  => 18,

  };

  my $warning;

  local $SIG{__WARN__} = sub { $warning = join("\n",@_) };

  my $req = eval { CPAN::Meta::Requirements->from_string_hash($string_hash); };

  is( $@, '', "vstring in string hash lives" );

  ok(

    $req->accepts_module(Shared => 'v50.44.60'),

    "vstring treated as if string",

  );

}

{

  my $req = CPAN::Meta::Requirements->from_string_hash(

    { Bad => 'invalid', },

    { bad_version_hook => sub { version->new(42) } },

  );

  ok(

    $req->accepts_module(Bad => 42),

    "options work 2nd arg to f_s_h",

  );

}

done_testing;