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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 => 26; |
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7 | use File::Spec; |
8 | |
9 | BEGIN { |
10 | use_ok('Class::MOP'); |
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11 | require_ok(File::Spec->catfile('examples', 'LazyClass.pod')); |
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12 | } |
13 | |
14 | { |
15 | package BinaryTree; |
16 | |
1becdfcc |
17 | use metaclass ( |
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18 | 'attribute_metaclass' => 'LazyClass::Attribute', |
19 | 'instance_metaclass' => 'LazyClass::Instance', |
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20 | ); |
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21 | |
22 | BinaryTree->meta->add_attribute('$:node' => ( |
23 | accessor => 'node', |
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24 | init_arg => 'node' |
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25 | )); |
26 | |
27 | BinaryTree->meta->add_attribute('$:left' => ( |
28 | reader => 'left', |
29 | default => sub { BinaryTree->new() } |
30 | )); |
31 | |
32 | BinaryTree->meta->add_attribute('$:right' => ( |
33 | reader => 'right', |
34 | default => sub { BinaryTree->new() } |
35 | )); |
36 | |
37 | sub new { |
38 | my $class = shift; |
39 | bless $class->meta->construct_instance(@_) => $class; |
40 | } |
41 | } |
42 | |
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43 | my $root = BinaryTree->new('node' => 0); |
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44 | isa_ok($root, 'BinaryTree'); |
45 | |
46 | ok(exists($root->{'$:node'}), '... node attribute has been initialized yet'); |
47 | ok(!exists($root->{'$:left'}), '... left attribute has not been initialized yet'); |
48 | ok(!exists($root->{'$:right'}), '... right attribute has not been initialized yet'); |
49 | |
50 | isa_ok($root->left, 'BinaryTree'); |
51 | isa_ok($root->right, 'BinaryTree'); |
52 | |
53 | ok(exists($root->{'$:left'}), '... left attribute has now been initialized'); |
54 | ok(exists($root->{'$:right'}), '... right attribute has now been initialized'); |
55 | |
56 | ok(!exists($root->left->{'$:node'}), '... node attribute has not been initialized yet'); |
57 | ok(!exists($root->left->{'$:left'}), '... left attribute has not been initialized yet'); |
58 | ok(!exists($root->left->{'$:right'}), '... right attribute has not been initialized yet'); |
59 | |
60 | ok(!exists($root->right->{'$:node'}), '... node attribute has not been initialized yet'); |
61 | ok(!exists($root->right->{'$:left'}), '... left attribute has not been initialized yet'); |
62 | ok(!exists($root->right->{'$:right'}), '... right attribute has not been initialized yet'); |
63 | |
64 | is($root->left->node(), undef, '... the left node is uninitialized'); |
65 | |
66 | ok(exists($root->left->{'$:node'}), '... node attribute has now been initialized'); |
67 | |
68 | $root->left->node(1); |
69 | is($root->left->node(), 1, '... the left node == 1'); |
70 | |
71 | ok(!exists($root->left->{'$:left'}), '... left attribute still has not been initialized yet'); |
72 | ok(!exists($root->left->{'$:right'}), '... right attribute still has not been initialized yet'); |
73 | |
74 | is($root->right->node(), undef, '... the right node is uninitialized'); |
75 | |
76 | ok(exists($root->right->{'$:node'}), '... node attribute has now been initialized'); |
77 | |
78 | $root->right->node(2); |
79 | is($root->right->node(), 2, '... the right node == 1'); |
80 | |
81 | ok(!exists($root->right->{'$:left'}), '... left attribute still has not been initialized yet'); |
82 | ok(!exists($root->right->{'$:right'}), '... right attribute still has not been initialized yet'); |
83 | |