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1 | #!/usr/bin/perl |
2 | |
3 | use strict; |
4 | use warnings; |
5 | |
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6 | use Test::More tests => 20; |
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7 | |
8 | use Scalar::Util qw(blessed); |
9 | |
10 | BEGIN { |
11 | use_ok('Moose'); |
12 | } |
13 | |
14 | =pod |
15 | |
16 | This test can be used as a basis for the runtime role composition. |
17 | Apparently it is not as simple as just making an anon class. One of |
18 | the problems is the way that anon classes are DESTROY-ed, which is |
19 | not very compatible with how instances are dealt with. |
20 | |
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21 | =cut |
22 | |
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23 | { |
24 | package Bark; |
25 | use Moose::Role; |
26 | |
27 | sub talk { 'woof' } |
28 | |
29 | package Sleeper; |
30 | use Moose::Role; |
31 | |
32 | sub sleep { 'snore' } |
33 | sub talk { 'zzz' } |
34 | |
35 | package My::Class; |
36 | use Moose; |
37 | |
38 | sub sleep { 'nite-nite' } |
39 | } |
40 | |
41 | my $obj = My::Class->new; |
42 | ok(!$obj->can( 'talk' ), "... the role is not composed yet"); |
43 | |
44 | |
45 | { |
46 | isa_ok($obj, 'My::Class'); |
47 | |
48 | ok(!$obj->does('Bark'), '... we do not do any roles yet'); |
49 | |
50 | Bark->meta->apply($obj); |
51 | |
52 | ok($obj->does('Bark'), '... we now do the Bark role'); |
53 | ok(!My::Class->does('Bark'), '... the class does not do the Bark role'); |
54 | |
55 | isa_ok($obj, 'My::Class'); |
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56 | isnt(blessed($obj), 'My::Class', '... but it is no longer blessed into My::Class'); |
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57 | |
58 | ok(!My::Class->can('talk'), "... the role is not composed at the class level"); |
59 | ok($obj->can('talk'), "... the role is now composed at the object level"); |
60 | |
61 | is($obj->talk, 'woof', '... got the right return value for the newly composed method'); |
62 | } |
63 | |
64 | { |
65 | is($obj->sleep, 'nite-nite', '... the original method responds as expected'); |
66 | |
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67 | ok(!$obj->does('Sleeper'), '... we do not do the Sleeper role'); |
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68 | |
69 | Sleeper->meta->apply($obj); |
70 | |
71 | ok($obj->does('Bark'), '... we still do the Bark role'); |
72 | ok($obj->does('Sleeper'), '... we now do the Sleeper role too'); |
73 | |
74 | ok(!My::Class->does('Sleeper'), '... the class does not do the Sleeper role'); |
75 | |
76 | isa_ok($obj, 'My::Class'); |
77 | |
78 | is(My::Class->sleep, 'nite-nite', '... the original method still responds as expected'); |
79 | |
80 | is($obj->sleep, 'snore', '... got the right return value for the newly composed method'); |
81 | is($obj->talk, 'zzz', '... got the right return value for the newly composed method'); |
82 | } |