package Test::Moose;

use strict;
use warnings;

use Sub::Exporter;
use Test::Builder;

use Moose::Util 'does_role', 'find_meta';

our $VERSION   = '0.01';
our $AUTHORITY = 'cpan:STEVAN';

my @exports = qw[
    meta_ok
    does_ok 
    has_attribute_ok
];

Sub::Exporter::setup_exporter({
    exports => \@exports,
    groups  => { default => \@exports }
});

## the test builder instance ...

my $Test = Test::Builder->new;

## exported functions

sub meta_ok ($;$) {
    my ($class_or_obj, $message) = @_;
    
    $message ||= "The object has a meta";
    
    if (find_meta($class_or_obj)) {
        return $Test->ok(1, $message)
    }
    else {
        return $Test->ok(0, $message);  
    }
}

sub does_ok ($$;$) {
    my ($class_or_obj, $does, $message) = @_;
    
    $message ||= "The object does $does";
    
    if (does_role($class_or_obj, $does)) {
        return $Test->ok(1, $message)
    }
    else {
        return $Test->ok(0, $message);  
    }
}

sub has_attribute_ok ($$;$) {
    my ($class_or_obj, $attr_name, $message) = @_;
    
    $message ||= "The object does has an attribute named $attr_name";
    
    my $meta = find_meta($class_or_obj);    
    
    if ($meta->find_attribute_by_name($attr_name)) {
        return $Test->ok(1, $message)
    }
    else {
        return $Test->ok(0, $message);  
    }    
}

1;

__END__

=pod

=head1 NAME

Test::Moose - Test functions for Moose specific features

=head1 SYNOPSIS

  use Test::More plan => 1;
  use Test::Moose;  

  meta_ok($class_or_obj, "... Foo has a ->meta");
  does_ok($class_or_obj, $role, "... Foo does the Baz role");
  has_attribute_ok($class_or_obj, $attr_name, "... Foo has the 'bar' attribute");

=head1 DESCRIPTION

This module provides some useful test functions for Moose based classes. It 
is an experimental first release, so comments and suggestions are very welcome.

=head1 EXPORTED FUNCTIONS

=over 4

=item B<meta_ok ($class_or_object)>

Tests if a class or object has a metaclass.

=item B<does_ok ($class_or_object, $role, ?$message)>

Tests if a class or object does a certain role, similar to what C<isa_ok> 
does for the C<isa> method.

=item B<has_attribute_ok($class_or_object, $attr_name, ?$message)>

Tests if a class or object has a certain attribute, similar to what C<can_ok> 
does for the methods.

=back

=head1 TODO

=over 4

=item Convert the Moose test suite to use this module.

=item Here is a list of possible functions to write

=over 4

=item immutability predicates

=item anon-class predicates

=item discovering original method from modified method

=item attribute metaclass predicates (attribute_isa?)

=back

=back

=head1 SEE ALSO

=over 4

=item L<Test::More>

=back

=head1 BUGS

All complex software has bugs lurking in it, and this module is no 
exception. If you find a bug please either email me, or add the bug
to cpan-RT.

=head1 AUTHOR

Anders Nor Berle E<lt>debolaz@gmail.comE<gt>

Stevan Little E<lt>stevan@iinteractive.comE<gt>

=head1 COPYRIGHT AND LICENSE

Copyright 2007-2008 by Infinity Interactive, Inc.

L<http://www.iinteractive.com>

This library is free software; you can redistribute it and/or modify
it under the same terms as Perl itself. 

=cut