use strict;
use warnings;
use Test::More tests => 9;

my $i = 0;
sub new_singleton_pkg {
  my $pkg_name = sprintf 'MooseX::Singleton::Test%s', $i++;
  eval qq{
    package $pkg_name;
    use MooseX::Singleton;
    has number => (is => 'rw', isa => 'Num', required => 1);
    has string => (is => 'rw', isa => 'Str', default  => 'Hello!');
  };

  return $pkg_name;
}

eval { new_singleton_pkg()->instance; };
like(
  $@,
  qr/\QAttribute (number) is required/,
  q{can't get the Singleton if requires attrs and we don't provide them},
);

eval { new_singleton_pkg()->string; };
like(
  $@,
  qr/\QAttribute (number) is required/,
  q{can't call any Singleton attr reader if Singleton can't be inited},
);

for my $pkg (new_singleton_pkg) {
  my $mst = $pkg->new(number => 5);
  isa_ok($mst, $pkg);

  is($mst->number, 5, "the instance has the given attribute value");

  is(
    $pkg->number,
    5,
    "the class method, called directly, returns the given attribute value"
  );

  eval { $pkg->new(number => 3) };
  like($@, qr/already/, "can't make new singleton with conflicting attributes");

  my $second = eval { $pkg->new };
  ok(!$@, "...but a second ->new without args is okay");

  is($second->number, 5, "...we get the originally inited number from it");

  eval { $pkg->initialize };
  like($@, qr/already/, "...but ->initialize() is still an error");
}