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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 => 21; |
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7 | use Test::Exception; |
8 | |
9 | BEGIN { |
10 | use_ok('Moose'); |
11 | } |
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12 | |
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13 | ## Roles |
14 | |
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15 | { |
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16 | package Constraint; |
17 | use strict; |
18 | use warnings; |
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19 | use Moose::Role; |
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20 | |
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21 | has 'value' => (isa => 'Int', is => 'ro'); |
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22 | |
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23 | around 'validate' => sub { |
24 | my $c = shift; |
25 | my ($self, $field) = @_; |
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26 | return undef if $c->($self, $self->validation_value($field)); |
27 | return $self->error_message; |
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28 | }; |
29 | |
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30 | sub validation_value { |
31 | my ($self, $field) = @_; |
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32 | return $field; |
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33 | } |
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34 | |
35 | sub error_message { confess "Abstract method!" } |
36 | |
37 | package Constraint::OnLength; |
38 | use strict; |
39 | use warnings; |
40 | use Moose::Role; |
41 | |
42 | has 'units' => (isa => 'Str', is => 'ro'); |
43 | |
44 | override 'validation_value' => sub { |
45 | return length(super()); |
46 | }; |
47 | |
48 | override 'error_message' => sub { |
49 | my $self = shift; |
50 | return super() . ' ' . $self->units; |
51 | }; |
52 | |
53 | } |
54 | |
55 | ## Classes |
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56 | |
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57 | { |
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58 | package Constraint::AtLeast; |
59 | use strict; |
60 | use warnings; |
61 | use Moose; |
62 | |
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63 | with 'Constraint'; |
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64 | |
65 | sub validate { |
66 | my ($self, $field) = @_; |
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67 | ($field >= $self->value); |
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68 | } |
69 | |
70 | sub error_message { 'must be at least ' . (shift)->value; } |
71 | |
72 | package Constraint::NoMoreThan; |
73 | use strict; |
74 | use warnings; |
75 | use Moose; |
76 | |
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77 | with 'Constraint'; |
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78 | |
79 | sub validate { |
80 | my ($self, $field) = @_; |
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81 | ($field <= $self->value); |
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82 | } |
83 | |
84 | sub error_message { 'must be no more than ' . (shift)->value; } |
85 | |
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86 | package Constraint::LengthNoMoreThan; |
87 | use strict; |
88 | use warnings; |
89 | use Moose; |
90 | |
91 | extends 'Constraint::NoMoreThan'; |
92 | with 'Constraint::OnLength'; |
93 | |
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94 | package Constraint::LengthAtLeast; |
95 | use strict; |
96 | use warnings; |
97 | use Moose; |
98 | |
99 | extends 'Constraint::AtLeast'; |
100 | with 'Constraint::OnLength'; |
101 | } |
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102 | |
103 | my $no_more_than_10 = Constraint::NoMoreThan->new(value => 10); |
104 | isa_ok($no_more_than_10, 'Constraint::NoMoreThan'); |
105 | |
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106 | ok($no_more_than_10->does('Constraint'), '... Constraint::NoMoreThan does Constraint'); |
107 | |
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108 | ok(!defined($no_more_than_10->validate(1)), '... validated correctly'); |
109 | is($no_more_than_10->validate(11), 'must be no more than 10', '... validation failed correctly'); |
110 | |
111 | my $at_least_10 = Constraint::AtLeast->new(value => 10); |
112 | isa_ok($at_least_10, 'Constraint::AtLeast'); |
113 | |
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114 | ok($at_least_10->does('Constraint'), '... Constraint::AtLeast does Constraint'); |
115 | |
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116 | ok(!defined($at_least_10->validate(11)), '... validated correctly'); |
117 | is($at_least_10->validate(1), 'must be at least 10', '... validation failed correctly'); |
118 | |
119 | # onlength |
120 | |
121 | my $no_more_than_10_chars = Constraint::LengthNoMoreThan->new(value => 10, units => 'chars'); |
122 | isa_ok($no_more_than_10_chars, 'Constraint::LengthNoMoreThan'); |
123 | isa_ok($no_more_than_10_chars, 'Constraint::NoMoreThan'); |
124 | |
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125 | ok($no_more_than_10_chars->does('Constraint'), '... Constraint::LengthNoMoreThan does Constraint'); |
126 | ok($no_more_than_10_chars->does('Constraint::OnLength'), '... Constraint::LengthNoMoreThan does Constraint::OnLength'); |
127 | |
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128 | ok(!defined($no_more_than_10_chars->validate('foo')), '... validated correctly'); |
129 | is($no_more_than_10_chars->validate('foooooooooo'), |
130 | 'must be no more than 10 chars', |
131 | '... validation failed correctly'); |
132 | |
133 | my $at_least_10_chars = Constraint::LengthAtLeast->new(value => 10, units => 'chars'); |
134 | isa_ok($at_least_10_chars, 'Constraint::LengthAtLeast'); |
135 | isa_ok($at_least_10_chars, 'Constraint::AtLeast'); |
136 | |
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137 | ok($at_least_10_chars->does('Constraint'), '... Constraint::LengthAtLeast does Constraint'); |
138 | ok($at_least_10_chars->does('Constraint::OnLength'), '... Constraint::LengthAtLeast does Constraint::OnLength'); |
139 | |
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140 | ok(!defined($at_least_10_chars->validate('barrrrrrrrr')), '... validated correctly'); |
141 | is($at_least_10_chars->validate('bar'), 'must be at least 10 chars', '... validation failed correctly'); |
142 | |