1 files changed, 71 insertions, 0 deletions
diff --git a/t/cmop/immutable_w_custom_metaclass.t b/t/cmop/immutable_w_custom_metaclass.t
new file mode 100644
index 0000000..c0b722d
--- /dev/null
+++ b/t/cmop/immutable_w_custom_metaclass.t
@@ -0,0 +1,71 @@
+use strict;
+use warnings;
+
+use Test::More;
+use Test::Fatal;
+use Scalar::Util;
+
+use Class::MOP;
+
+use lib 't/cmop/lib';
+
+{
+
+    package Foo;
+
+    use strict;
+    use warnings;
+    use metaclass;
+
+    __PACKAGE__->meta->make_immutable;
+
+    package Bar;
+
+    use strict;
+    use warnings;
+    use metaclass;
+
+    __PACKAGE__->meta->make_immutable;
+
+    package Baz;
+
+    use strict;
+    use warnings;
+    use metaclass 'MyMetaClass';
+
+    sub mymetaclass_attributes {
+        shift->meta->mymetaclass_attributes;
+    }
+
+    ::is( ::exception { Baz->meta->superclasses('Bar') }, undef, '... we survive the metaclass incompatibility test' );
+}
+
+{
+    my $meta = Baz->meta;
+    ok( $meta->is_mutable, '... Baz is mutable' );
+    is(
+        Scalar::Util::blessed( Foo->meta ),
+        Scalar::Util::blessed( Bar->meta ),
+        'Foo and Bar immutable metaclasses match'
+    );
+    is( Scalar::Util::blessed($meta), 'MyMetaClass',
+        'Baz->meta blessed as MyMetaClass' );
+    ok( Baz->can('mymetaclass_attributes'),
+        '... Baz can do method before immutable' );
+    ok( $meta->can('mymetaclass_attributes'),
+        '... meta can do method before immutable' );
+    is( exception { $meta->make_immutable }, undef, "Baz is now immutable" );
+    ok( $meta->is_immutable, '... Baz is immutable' );
+    isa_ok( $meta, 'MyMetaClass', 'Baz->meta' );
+    ok( Baz->can('mymetaclass_attributes'),
+        '... Baz can do method after imutable' );
+    ok( $meta->can('mymetaclass_attributes'),
+        '... meta can do method after immutable' );
+    isnt( Scalar::Util::blessed( Baz->meta ),
+        Scalar::Util::blessed( Bar->meta ),
+        'Baz and Bar immutable metaclasses are different' );
+    is( exception { $meta->make_mutable }, undef, "Baz is now mutable" );
+    ok( $meta->is_mutable, '... Baz is mutable again' );
+}
+
+done_testing;