blob: 11c15a264cf0897e60b730c9f96592c811ffc8e9 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
|
#!./perl
use strict;
use warnings;
BEGIN {
unless (-d 'blib') {
chdir 't' if -d 't';
@INC = '../lib';
}
}
use Test::More tests => 4;
=pod
This tests the classic diamond inheritence pattern.
<A>
/ \
<B> <C>
\ /
<D>
=cut
{
package Diamond_A;
sub hello { 'Diamond_A::hello' }
}
{
package Diamond_B;
use base 'Diamond_A';
}
{
package Diamond_C;
use base 'Diamond_A';
sub hello { 'Diamond_C::hello' }
}
{
package Diamond_D;
use base ('Diamond_B', 'Diamond_C');
use mro 'dfs';
}
is_deeply(
mro::get_linear_isa('Diamond_D'),
[ qw(Diamond_D Diamond_B Diamond_A Diamond_C) ],
'... got the right MRO for Diamond_D');
is(Diamond_D->hello, 'Diamond_A::hello', '... method resolved itself as expected');
is(Diamond_D->can('hello')->(), 'Diamond_A::hello', '... can(method) resolved itself as expected');
is(UNIVERSAL::can("Diamond_D", 'hello')->(), 'Diamond_A::hello', '... can(method) resolved itself as expected');
|
