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use strict;
use warnings;
use Test::More;
use File::Spec;
use Class::MOP;
BEGIN {
eval "use Algorithm::C3";
plan skip_all => "Algorithm::C3 required for this test" if $@;
require_ok(File::Spec->catfile('examples', 'C3MethodDispatchOrder.pod'));
}
{
package Diamond_A;
use metaclass 'C3MethodDispatchOrder';
sub hello { 'Diamond_A::hello' }
package Diamond_B;
use metaclass 'C3MethodDispatchOrder';
__PACKAGE__->meta->superclasses('Diamond_A');
package Diamond_C;
use metaclass 'C3MethodDispatchOrder';
__PACKAGE__->meta->superclasses('Diamond_A');
sub hello { 'Diamond_C::hello' }
package Diamond_D;
use metaclass 'C3MethodDispatchOrder';
__PACKAGE__->meta->superclasses('Diamond_B', 'Diamond_C');
}
is_deeply(
[ Diamond_D->meta->class_precedence_list ],
[ qw(Diamond_D Diamond_B Diamond_C Diamond_A) ],
'... got the right MRO for Diamond_D');
is(Diamond_D->hello, 'Diamond_C::hello', '... got the right dispatch order');
is(Diamond_D->can('hello')->(), 'Diamond_C::hello', '... can(method) resolved itself as expected');
done_testing;
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