1 files changed, 95 insertions, 0 deletions
diff --git a/t/cmop/meta_package_extension.t b/t/cmop/meta_package_extension.t
new file mode 100644
index 0000000..4754275
--- /dev/null
+++ b/t/cmop/meta_package_extension.t
@@ -0,0 +1,95 @@
+use strict;
+use warnings;
+
+use Test::More;
+use Test::Fatal;
+
+use Class::MOP;
+
+{
+    package My::Package::Stash;
+    use strict;
+    use warnings;
+
+    use parent 'Package::Stash';
+
+    use metaclass;
+
+    use Symbol 'gensym';
+
+    __PACKAGE__->meta->add_attribute(
+        'namespace' => (
+            reader  => 'namespace',
+            default => sub { {} }
+        )
+    );
+
+    sub new {
+        my $class = shift;
+        $class->meta->new_object(__INSTANCE__ => $class->SUPER::new(@_));
+    }
+
+    sub add_symbol {
+        my ($self, $variable, $initial_value) = @_;
+
+        (my $name = $variable) =~ s/^[\$\@\%\&]//;
+
+        my $glob = gensym();
+        *{$glob} = $initial_value if defined $initial_value;
+        $self->namespace->{$name} = *{$glob};
+    }
+}
+
+{
+    package My::Meta::Package;
+
+    use strict;
+    use warnings;
+
+    use parent 'Class::MOP::Package';
+
+    sub _package_stash {
+        $_[0]->{_package_stash} ||= My::Package::Stash->new($_[0]->name);
+    }
+}
+
+# No actually package Foo exists :)
+my $meta = My::Meta::Package->initialize('Foo');
+
+isa_ok($meta, 'My::Meta::Package');
+isa_ok($meta, 'Class::MOP::Package');
+
+ok(!defined($Foo::{foo}), '... the %foo slot has not been created yet');
+ok(!$meta->has_package_symbol('%foo'), '... the meta agrees');
+
+is( exception {
+    $meta->add_package_symbol('%foo' => { one => 1 });
+}, undef, '... the %foo symbol is created succcessfully' );
+
+ok(!defined($Foo::{foo}), '... the %foo slot has not been created in the actual Foo package');
+ok($meta->has_package_symbol('%foo'), '... the meta agrees');
+
+my $foo = $meta->get_package_symbol('%foo');
+is_deeply({ one => 1 }, $foo, '... got the right package variable back');
+
+$foo->{two} = 2;
+
+is($foo, $meta->get_package_symbol('%foo'), '... our %foo is the same as the metas');
+
+ok(!defined($Foo::{bar}), '... the @bar slot has not been created yet');
+
+is( exception {
+    $meta->add_package_symbol('@bar' => [ 1, 2, 3 ]);
+}, undef, '... created @Foo::bar successfully' );
+
+ok(!defined($Foo::{bar}), '... the @bar slot has still not been created');
+
+ok(!defined($Foo::{baz}), '... the %baz slot has not been created yet');
+
+is( exception {
+    $meta->add_package_symbol('%baz');
+}, undef, '... created %Foo::baz successfully' );
+
+ok(!defined($Foo::{baz}), '... the %baz slot has still not been created');
+
+done_testing;