use strict;
use warnings;
use Test::More;
use Test::Exception;

use Class::MOP;

=pod

This tests a bug sent via RT #39001

=cut

{
    package Foo;
    use metaclass;
}

throws_ok {
    Foo->meta->superclasses('Foo');
} qr/^Recursive inheritance detected/, "error occurs when extending oneself";

{
    package Bar;
    use metaclass;
}

lives_ok {
    Foo->meta->superclasses('Bar');
} "regular subclass";

throws_ok {
    Bar->meta->superclasses('Foo');
} qr/^Recursive inheritance detected/, "error occurs when Bar extends Foo, when Foo is a Bar";

done_testing;