#!./perl
use strict;
use warnings;
use utf8;
use open qw( :utf8 :std );
require q(./test.pl); plan(tests => 4);
=pod
This tests the classic diamond inheritance pattern.
<A>
/ \
<B> <C>
\ /
<D>
=cut
{
package Diᚪၚd_A;
sub hèllò { 'Diᚪၚd_A::hèllò' }
}
{
package Diᚪၚd_B;
use base 'Diᚪၚd_A';
}
{
package Diᚪၚd_C;
use base 'Diᚪၚd_A';
sub hèllò { 'Diᚪၚd_C::hèllò' }
}
{
package Diᚪၚd_D;
use base ('Diᚪၚd_B', 'Diᚪၚd_C');
use mro 'dfs';
}
ok(eq_array(
mro::get_linear_isa('Diᚪၚd_D'),
[ qw(Diᚪၚd_D Diᚪၚd_B Diᚪၚd_A Diᚪၚd_C) ]
), '... got the right MRO for Diᚪၚd_D');
is(Diᚪၚd_D->hèllò, 'Diᚪၚd_A::hèllò', '... method resolved itself as expected');
is(Diᚪၚd_D->can('hèllò')->(), 'Diᚪၚd_A::hèllò', '... can(method) resolved itself as expected');
is(UNIVERSAL::can("Diᚪၚd_D", 'hèllò')->(), 'Diᚪၚd_A::hèllò', '... can(method) resolved itself as expected');