lib/dry/struct/class_interface.rb in dry-struct-0.1.1 vs lib/dry/struct/class_interface.rb in dry-struct-0.2.0

@@ -49,11 +49,11 @@
 
         self
       end
 
       def check_schema_duplication(new_schema)
-        shared_keys = new_schema.keys & schema.keys
+        shared_keys = new_schema.keys & (schema.keys - superclass.schema.keys)
 
         raise RepeatedAttributeError, shared_keys.first if shared_keys.any?
       end
       private :check_schema_duplication
 
@@ -65,10 +65,10 @@
         end
       end
 
       def schema
         super_schema = superclass.respond_to?(:schema) ? superclass.schema : {}
-        super_schema.merge(@schema || {})
+        super_schema.merge(@schema)
       end
 
       def new(attributes = default_attributes)
         if attributes.instance_of?(self)
           attributes