6 use Test::More tests => 22;
18 has 'value' => (isa => 'Num', is => 'ro');
20 around 'validate' => sub {
22 my ($self, $field) = @_;
23 return undef if $c->($self, $self->validation_value($field));
24 return $self->error_message;
27 sub validation_value {
28 my ($self, $field) = @_;
32 sub error_message { confess "Abstract method!" }
34 package Constraint::OnLength;
37 has 'units' => (isa => 'Str', is => 'ro');
39 override 'validation_value' => sub {
40 return length(super());
43 override 'error_message' => sub {
45 return super() . ' ' . $self->units;
53 package Constraint::AtLeast;
57 with 'Constraint' => { excludes => 'error_message' };
61 my ($self, $field) = @_;
62 ($field >= $self->value);
65 sub error_message { 'must be at least ' . (shift)->value; }
67 package Constraint::NoMoreThan;
71 with 'Constraint' => { excludes => 'error_message' };
75 my ($self, $field) = @_;
76 ($field <= $self->value);
79 sub error_message { 'must be no more than ' . (shift)->value; }
81 package Constraint::LengthNoMoreThan;
84 extends 'Constraint::NoMoreThan';
85 with 'Constraint::OnLength';
87 package Constraint::LengthAtLeast;
90 extends 'Constraint::AtLeast';
91 with 'Constraint::OnLength';
94 my $no_more_than_10 = Constraint::NoMoreThan->new(value => 10);
95 isa_ok($no_more_than_10, 'Constraint::NoMoreThan');
97 ok($no_more_than_10->does('Constraint'), '... Constraint::NoMoreThan does Constraint');
99 ok(!defined($no_more_than_10->validate(1)), '... validated correctly');
100 is($no_more_than_10->validate(11), 'must be no more than 10', '... validation failed correctly');
102 my $at_least_10 = Constraint::AtLeast->new(value => 10);
103 isa_ok($at_least_10, 'Constraint::AtLeast');
105 ok($at_least_10->does('Constraint'), '... Constraint::AtLeast does Constraint');
107 ok(!defined($at_least_10->validate(11)), '... validated correctly');
108 is($at_least_10->validate(1), 'must be at least 10', '... validation failed correctly');
112 my $no_more_than_10_chars = Constraint::LengthNoMoreThan->new(value => 10, units => 'chars');
113 isa_ok($no_more_than_10_chars, 'Constraint::LengthNoMoreThan');
114 isa_ok($no_more_than_10_chars, 'Constraint::NoMoreThan');
116 ok($no_more_than_10_chars->does('Constraint'), '... Constraint::LengthNoMoreThan does Constraint');
117 ok($no_more_than_10_chars->does('Constraint::OnLength'), '... Constraint::LengthNoMoreThan does Constraint::OnLength');
119 ok(!defined($no_more_than_10_chars->validate('foo')), '... validated correctly');
120 is($no_more_than_10_chars->validate('foooooooooo'),
121 'must be no more than 10 chars',
122 '... validation failed correctly');
124 my $at_least_10_chars = Constraint::LengthAtLeast->new(value => 10, units => 'chars');
125 isa_ok($at_least_10_chars, 'Constraint::LengthAtLeast');
126 isa_ok($at_least_10_chars, 'Constraint::AtLeast');
128 ok($at_least_10_chars->does('Constraint'), '... Constraint::LengthAtLeast does Constraint');
129 ok($at_least_10_chars->does('Constraint::OnLength'), '... Constraint::LengthAtLeast does Constraint::OnLength');
131 ok(!defined($at_least_10_chars->validate('barrrrrrrrr')), '... validated correctly');
132 is($at_least_10_chars->validate('bar'), 'must be at least 10 chars', '... validation failed correctly');