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#!/usr/bin/perl
use strict;
use warnings;
use utf8;
use open qw( :utf8 :std );
require q(./test.pl); plan(tests => 5);
=pod
This tests the classic diamond inheritance pattern.
<A>
/ \
<B> <C>
\ /
<D>
=cut
{
package Diӑmond_A;
use mro 'c3';
sub 헬ฬ { 'Diӑmond_A::헬ฬ' }
sub fಓ { 'Diӑmond_A::fಓ' }
}
{
package Diӑmond_B;
use base 'Diӑmond_A';
use mro 'c3';
sub fಓ { 'Diӑmond_B::fಓ => ' . (shift)->next::method() }
}
{
package Diӑmond_C;
use mro 'c3';
use base 'Diӑmond_A';
sub 헬ฬ { 'Diӑmond_C::헬ฬ => ' . (shift)->next::method() }
sub fಓ { 'Diӑmond_C::fಓ => ' . (shift)->next::method() }
}
{
package Diӑmond_D;
use base ('Diӑmond_B', 'Diӑmond_C');
use mro 'c3';
sub fಓ { 'Diӑmond_D::fಓ => ' . (shift)->next::method() }
}
ok(eq_array(
mro::get_linear_isa('Diӑmond_D'),
[ qw(Diӑmond_D Diӑmond_B Diӑmond_C Diӑmond_A) ]
), '... got the right MRO for Diӑmond_D');
is(Diӑmond_D->헬ฬ, 'Diӑmond_C::헬ฬ => Diӑmond_A::헬ฬ', '... method resolved itself as expected');
is(Diӑmond_D->can('헬ฬ')->('Diӑmond_D'),
'Diӑmond_C::헬ฬ => Diӑmond_A::헬ฬ',
'... can(method) resolved itself as expected');
is(UNIVERSAL::can("Diӑmond_D", '헬ฬ')->('Diӑmond_D'),
'Diӑmond_C::헬ฬ => Diӑmond_A::헬ฬ',
'... can(method) resolved itself as expected');
is(Diӑmond_D->fಓ,
'Diӑmond_D::fಓ => Diӑmond_B::fಓ => Diӑmond_C::fಓ => Diӑmond_A::fಓ',
'... method fಓ resolved itself as expected');
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