--- /dev/null
+#!/usr/bin/perl
+
+use strict;
+use warnings;
+use Test::More;
+
+BEGIN{
+ if($] < 5.008){
+ plan skip_all => "segv happens on 5.6.2";
+ }
+}
+
+use lib 't/lib', 'lib';
+
+use Test::More tests => 32;
+use Test::Exception;
+
+{
+ package My::SimpleTrait;
+
+ use Mouse::Role;
+
+ sub simple { return 5 }
+}
+
+{
+ package Foo;
+
+ use Mouse -traits => [ 'My::SimpleTrait' ];
+}
+
+can_ok( Foo->meta(), 'simple' );
+is( Foo->meta()->simple(), 5,
+ 'Foo->meta()->simple() returns expected value' );
+
+{
+ package Bar;
+
+ use Mouse -traits => 'My::SimpleTrait';
+}
+
+can_ok( Bar->meta(), 'simple' );
+is( Bar->meta()->simple(), 5,
+ 'Foo->meta()->simple() returns expected value' );
+
+{
+ package My::SimpleTrait2;
+
+ use Mouse::Role;
+
+ # This needs to happen at compile time so it happens before we
+ # apply traits to Bar
+ BEGIN {
+ has 'attr' =>
+ ( is => 'ro',
+ default => 'something',
+ );
+ }
+
+ sub simple { return 5 }
+}
+
+{
+ package Bar;
+
+ use Mouse -traits => [ 'My::SimpleTrait2' ];
+}
+
+can_ok( Bar->meta(), 'simple' );
+is( Bar->meta()->simple(), 5,
+ 'Bar->meta()->simple() returns expected value' );
+can_ok( Bar->meta(), 'attr' );
+is( Bar->meta()->attr(), 'something',
+ 'Bar->meta()->attr() returns expected value' );
+
+{
+ package My::SimpleTrait3;
+
+ use Mouse::Role;
+
+ BEGIN {
+ has 'attr2' =>
+ ( is => 'ro',
+ default => 'something',
+ );
+ }
+
+ sub simple2 { return 55 }
+}
+
+{
+ package Baz;
+
+ use Mouse -traits => [ 'My::SimpleTrait2', 'My::SimpleTrait3' ];
+}
+
+can_ok( Baz->meta(), 'simple' );
+is( Baz->meta()->simple(), 5,
+ 'Baz->meta()->simple() returns expected value' );
+can_ok( Baz->meta(), 'attr' );
+is( Baz->meta()->attr(), 'something',
+ 'Baz->meta()->attr() returns expected value' );
+can_ok( Baz->meta(), 'simple2' );
+is( Baz->meta()->simple2(), 55,
+ 'Baz->meta()->simple2() returns expected value' );
+can_ok( Baz->meta(), 'attr2' );
+is( Baz->meta()->attr2(), 'something',
+ 'Baz->meta()->attr2() returns expected value' );
+
+{
+ package My::Trait::AlwaysRO;
+
+ use Mouse::Role;
+
+ around '_process_new_attribute', '_process_inherited_attribute' =>
+ sub {
+ my $orig = shift;
+ my ( $self, $name, %args ) = @_;
+
+ $args{is} = 'ro';
+
+ return $self->$orig( $name, %args );
+ };
+}
+
+{
+ package Quux;
+
+ use Mouse -traits => [ 'My::Trait::AlwaysRO' ];
+
+ has 'size' =>
+ ( is => 'rw',
+ isa => 'Int',
+ );
+}
+
+ok( Quux->meta()->has_attribute('size'),
+ 'Quux has size attribute' );
+ok( ! Quux->meta()->get_attribute('size')->writer(),
+ 'size attribute does not have a writer' );
+
+{
+ package My::Class::Whatever;
+
+ use Mouse::Role;
+
+ sub whatever { 42 }
+
+ package Mouse::Meta::Class::Custom::Trait::Whatever;
+
+ sub register_implementation {
+ return 'My::Class::Whatever';
+ }
+}
+
+{
+ package RanOutOfNames;
+
+ use Mouse -traits => [ 'Whatever' ];
+}
+
+ok( RanOutOfNames->meta()->meta()->has_method('whatever'),
+ 'RanOutOfNames->meta() has whatever method' );
+
+{
+ package Role::Foo;
+
+ use Mouse::Role -traits => [ 'My::SimpleTrait' ];
+}
+
+can_ok( Role::Foo->meta(), 'simple' );
+is( Role::Foo->meta()->simple(), 5,
+ 'Role::Foo->meta()->simple() returns expected value' );
+
+{
+ require Mouse::Util::TypeConstraints;
+ dies_ok( sub { Mouse::Util::TypeConstraints->import( -traits => 'My::SimpleTrait' ) },
+ 'cannot provide -traits to an exporting module that does not init_meta' );
+ like( $@, qr/does not have an init_meta/,
+ '... and error provides a useful explanation' );
+}
+
+
+{
+ package Foo::Subclass;
+
+ use Mouse -traits => [ 'My::SimpleTrait3' ];
+
+ extends 'Foo';
+}
+
+can_ok( Foo::Subclass->meta(), 'simple' );
+is( Foo::Subclass->meta()->simple(), 5,
+ 'Foo::Subclass->meta()->simple() returns expected value' );
+is( Foo::Subclass->meta()->simple2(), 55,
+ 'Foo::Subclass->meta()->simple2() returns expected value' );
+can_ok( Foo::Subclass->meta(), 'attr2' );
+is( Foo::Subclass->meta()->attr2(), 'something',
+ 'Foo::Subclass->meta()->attr2() returns expected value' );
+
+{
+
+ package Class::WithAlreadyPresentTrait;
+ use Mouse -traits => 'My::SimpleTrait';
+
+ has an_attr => ( is => 'ro' );
+}
+
+lives_ok {
+ my $instance = Class::WithAlreadyPresentTrait->new( an_attr => 'value' );
+ is( $instance->an_attr, 'value', 'Can get value' );
+}
+'Can create instance and access attributes';
+
+{
+
+ package Class::WhichLoadsATraitFromDisk;
+
+ # Any role you like here, the only important bit is that it gets
+ # loaded from disk and has not already been defined.
+ use Mouse -traits => 'Role::Parent';
+
+ has an_attr => ( is => 'ro' );
+}
+
+lives_ok {
+ my $instance = Class::WhichLoadsATraitFromDisk->new( an_attr => 'value' );
+ is( $instance->an_attr, 'value', 'Can get value' );
+}
+'Can create instance and access attributes';