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|
use strict;
use warnings;
use Test::More tests => 14;
=pod
This example is take from: http://www.python.org/2.3/mro.html
"My first example"
class O: pass
class F(O): pass
class E(O): pass
class D(O): pass
class C(D,F): pass
class B(D,E): pass
class A(B,C): pass
6
---
Level 3 | O | (more general)
/ --- \
/ | \ |
/ | \ |
/ | \ |
--- --- --- |
Level 2 3 | D | 4| E | | F | 5 |
--- --- --- |
\ \ _ / | |
\ / \ _ | |
\ / \ | |
--- --- |
Level 1 1 | B | | C | 2 |
--- --- |
\ / |
\ / \ /
---
Level 0 0 | A | (more specialized)
---
=cut
{
package Test::O;
use Class::C3;
package Test::F;
use Class::C3;
BEGIN { our @ISA = ('Test::O'); }
package Test::E;
BEGIN { our @ISA = ('Test::O'); }
use Class::C3;
sub C_or_E { 'Test::E' }
package Test::D;
use Class::C3;
BEGIN { our @ISA = ('Test::O'); }
sub C_or_D { 'Test::D' }
package Test::C;
BEGIN { our @ISA = ('Test::D', 'Test::F'); }
use Class::C3;
sub C_or_D { 'Test::C' }
sub C_or_E { 'Test::C' }
package Test::B;
use Class::C3;
BEGIN { our @ISA = ('Test::D', 'Test::E'); }
package Test::A;
BEGIN { our @ISA = ('Test::B', 'Test::C'); }
use Class::C3;
}
Class::C3::initialize();
is_deeply(
[ Class::C3::calculateMRO('Test::F') ],
[ qw(Test::F Test::O) ],
'... got the right MRO for Test::F');
is_deeply(
[ Class::C3::calculateMRO('Test::E') ],
[ qw(Test::E Test::O) ],
'... got the right MRO for Test::E');
is_deeply(
[ Class::C3::calculateMRO('Test::D') ],
[ qw(Test::D Test::O) ],
'... got the right MRO for Test::D');
is_deeply(
[ Class::C3::calculateMRO('Test::C') ],
[ qw(Test::C Test::D Test::F Test::O) ],
'... got the right MRO for Test::C');
is_deeply(
[ Class::C3::calculateMRO('Test::B') ],
[ qw(Test::B Test::D Test::E Test::O) ],
'... got the right MRO for Test::B');
is_deeply(
[ Class::C3::calculateMRO('Test::A') ],
[ qw(Test::A Test::B Test::C Test::D Test::E Test::F Test::O) ],
'... got the right MRO for Test::A');
is(Test::A->C_or_D, 'Test::C', '... got the expected method output');
is(Test::A->can('C_or_D')->(), 'Test::C', '... can got the expected method output');
is(Test::A->C_or_E, 'Test::C', '... got the expected method output');
is(Test::A->can('C_or_E')->(), 'Test::C', '... can got the expected method output');
# remove the C3
Class::C3::uninitialize();
is(Test::A->C_or_D, 'Test::D', '... old method resolution has been restored');
is(Test::A->can('C_or_D')->(), 'Test::D', '... old can(method) resolution has been restored');
is(Test::A->C_or_E, 'Test::E', '... old method resolution has been restored');
is(Test::A->can('C_or_E')->(), 'Test::E', '... old can(method) resolution has been restored');
|
