6 use Test::More tests => 21;
21 has 'value' => (isa => 'Int', is => 'ro');
23 around 'validate' => sub {
25 my ($self, $field) = @_;
26 return undef if $c->($self, $self->validation_value($field));
27 return $self->error_message;
30 sub validation_value {
31 my ($self, $field) = @_;
35 sub error_message { confess "Abstract method!" }
37 package Constraint::OnLength;
42 has 'units' => (isa => 'Str', is => 'ro');
44 override 'validation_value' => sub {
45 return length(super());
48 override 'error_message' => sub {
50 return super() . ' ' . $self->units;
58 package Constraint::AtLeast;
66 my ($self, $field) = @_;
67 ($field >= $self->value);
70 sub error_message { 'must be at least ' . (shift)->value; }
72 package Constraint::NoMoreThan;
80 my ($self, $field) = @_;
81 ($field <= $self->value);
84 sub error_message { 'must be no more than ' . (shift)->value; }
86 package Constraint::LengthNoMoreThan;
91 extends 'Constraint::NoMoreThan';
92 with 'Constraint::OnLength';
94 package Constraint::LengthAtLeast;
99 extends 'Constraint::AtLeast';
100 with 'Constraint::OnLength';
103 my $no_more_than_10 = Constraint::NoMoreThan->new(value => 10);
104 isa_ok($no_more_than_10, 'Constraint::NoMoreThan');
106 ok($no_more_than_10->does('Constraint'), '... Constraint::NoMoreThan does Constraint');
108 ok(!defined($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');
111 my $at_least_10 = Constraint::AtLeast->new(value => 10);
112 isa_ok($at_least_10, 'Constraint::AtLeast');
114 ok($at_least_10->does('Constraint'), '... Constraint::AtLeast does Constraint');
116 ok(!defined($at_least_10->validate(11)), '... validated correctly');
117 is($at_least_10->validate(1), 'must be at least 10', '... validation failed correctly');
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($no_more_than_10_chars, 'Constraint::NoMoreThan');
125 ok($no_more_than_10_chars->does('Constraint'), '... Constraint::LengthNoMoreThan does Constraint');
126 ok($no_more_than_10_chars->does('Constraint::OnLength'), '... Constraint::LengthNoMoreThan does Constraint::OnLength');
128 ok(!defined($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');
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($at_least_10_chars, 'Constraint::AtLeast');
137 ok($at_least_10_chars->does('Constraint'), '... Constraint::LengthAtLeast does Constraint');
138 ok($at_least_10_chars->does('Constraint::OnLength'), '... Constraint::LengthAtLeast does Constraint::OnLength');
140 ok(!defined($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');