use strict;
use warnings;
use Test::More tests => 3;
BEGIN {
use_ok('Class::C3');
}
=pod
This tests a strange bug found by Matt S. Trout
while building DBIx::Class. Thanks Matt!!!!
<A>
/ \
<C> <B>
\ /
<D>
=cut
{
package Diamond_A;
use Class::C3;
sub foo { 'Diamond_A::foo' }
}
{
package Diamond_B;
use base 'Diamond_A';
use Class::C3;
sub foo { 'Diamond_B::foo => ' . (shift)->next::method }
}
{
package Diamond_C;
use Class::C3;
use base 'Diamond_A';
}
{
package Diamond_D;
use base ('Diamond_C', 'Diamond_B');
use Class::C3;
sub foo { 'Diamond_D::foo => ' . (shift)->next::method }
}
Class::C3::initialize();
is_deeply(
[ Class::C3::calculateMRO('Diamond_D') ],
[ qw(Diamond_D Diamond_C Diamond_B Diamond_A) ],
'... got the right MRO for Diamond_D');
is(Diamond_D->foo,
'Diamond_D::foo => Diamond_B::foo => Diamond_A::foo',
'... got the right next::method dispatch path');