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use strict;
use warnings;
use Test::More tests => 2;
=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;
BEGIN { our @ISA = ('Diamond_A'); }
use Class::C3;
sub foo { 'Diamond_B::foo => ' . (shift)->next::method }
}
{
package Diamond_C;
use Class::C3;
BEGIN { our @ISA = ('Diamond_A'); }
}
{
package Diamond_D;
BEGIN { our @ISA = ('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');
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