--- /dev/null
+#!/usr/bin/env perl
+use strict;
+use warnings;
+use Test::More tests => 2;
+use lib 't/lib';
+
+do {
+ local $SIG{__WARN__} = sub{ $_[0] =~ /deprecated/ or warn @_ };
+
+ package MouseX::AttributeHelpers::Number;
+ use Mouse;
+ extends 'Mouse::Meta::Attribute';
+
+ sub create {
+ my ($self, @args) = @_;
+ my $attr = $self->SUPER::create(@args);
+ my %provides = %{$attr->{provides}};
+ my $method_constructors = {
+ add => sub {
+ my ($attr, $name) = @_;
+ return sub {
+ $_[0]->$name( $_[0]->$name() + $_[1])
+ };
+ },
+ };
+ while (my ($name, $aliased) = each %provides) {
+ $attr->associated_class->add_method(
+ $aliased => $method_constructors->{$name}->($attr, $attr->name)
+ );
+ }
+ return $attr;
+ };
+
+ package # hide me from search.cpan.org
+ Mouse::Meta::Attribute::Custom::Number;
+ sub register_implementation { 'MouseX::AttributeHelpers::Number' }
+
+ 1;
+
+ package Klass;
+ use Mouse;
+
+ has 'i' => (
+ metaclass => 'Number',
+ is => 'rw',
+ isa => 'Int',
+ provides => {
+ 'add' => 'add_number'
+ },
+ );
+};
+
+can_ok 'Klass', 'add_number';
+my $k = Klass->new(i=>3);
+$k->add_number(4);
+is $k->i, 7;
+