--- /dev/null
+#!/usr/bin/perl
+
+use strict;
+use warnings;
+
+use Test::More tests => 16;
+use Test::Exception;
+
+
+
+{
+ package Foo::Meta::Attribute;
+ use Mouse;
+
+ extends 'Mouse::Meta::Attribute';
+
+ around 'new' => sub {
+ my $next = shift;
+ my $self = shift;
+ my $name = shift;
+ $next->($self, $name, (is => 'rw', isa => 'Foo'), @_);
+ };
+
+ package Foo;
+ use Mouse;
+
+ has 'foo' => (metaclass => 'Foo::Meta::Attribute');
+}
+{
+ my $foo = Foo->new;
+ isa_ok($foo, 'Foo');
+
+ my $foo_attr = Foo->meta->get_attribute('foo');
+ isa_ok($foo_attr, 'Foo::Meta::Attribute');
+ isa_ok($foo_attr, 'Mouse::Meta::Attribute');
+
+ is($foo_attr->name, 'foo', '... got the right name for our meta-attribute');
+ ok($foo_attr->has_accessor, '... our meta-attrubute created the accessor for us');
+
+ ok($foo_attr->has_type_constraint, '... our meta-attrubute created the type_constraint for us');
+
+ my $foo_attr_type_constraint = $foo_attr->type_constraint;
+ isa_ok($foo_attr_type_constraint, 'Mouse::Meta::TypeConstraint');
+
+ is($foo_attr_type_constraint->name, 'Foo', '... got the right type constraint name');
+
+ local $TODO = '$type_constraint->parent is not reliable';
+ is($foo_attr_type_constraint->parent, 'Object', '... got the right type constraint parent name');
+}
+{
+ package Bar::Meta::Attribute;
+ use Mouse;
+
+ #extends 'Class::MOP::Attribute';
+ extends 'Mouse::Meta::Attribute';
+
+ package Bar;
+ use Mouse;
+
+ ::lives_ok {
+ has 'bar' => (metaclass => 'Bar::Meta::Attribute');
+ } '... the attribute metaclass need not be a Mouse::Meta::Attribute as long as it behaves';
+}
+
+{
+ package Mouse::Meta::Attribute::Custom::Foo;
+ sub register_implementation { 'Foo::Meta::Attribute' }
+
+ package Mouse::Meta::Attribute::Custom::Bar;
+ use Mouse;
+
+ extends 'Mouse::Meta::Attribute';
+
+ package Another::Foo;
+ use Mouse;
+
+ ::lives_ok {
+ has 'foo' => (metaclass => 'Foo');
+ } '... the attribute metaclass alias worked correctly';
+
+ ::lives_ok {
+ has 'bar' => (metaclass => 'Bar', is => 'bare');
+ } '... the attribute metaclass alias worked correctly';
+}
+
+{
+ my $foo_attr = Another::Foo->meta->get_attribute('foo');
+ isa_ok($foo_attr, 'Foo::Meta::Attribute');
+ isa_ok($foo_attr, 'Mouse::Meta::Attribute');
+
+ my $bar_attr = Another::Foo->meta->get_attribute('bar');
+ isa_ok($bar_attr, 'Mouse::Meta::Attribute::Custom::Bar');
+ isa_ok($bar_attr, 'Mouse::Meta::Attribute');
+}
+
+