lib/jot/ruby/impl_base.rb in jot-ruby-0.1.3 vs lib/jot/ruby/impl_base.rb in jot-ruby-0.1.4

@@ -22,10 +22,15 @@
       end
 
       def self.operation_class
         @operation_class ||= begin
           klass = Class.new(Operation)
-          klass.include self::OperationMethods
+          if self.constants.include? :OperationMethods
+            klass.include self::OperationMethods
+          else
+            raise Errors::NoImplError, "impl has no OperationMethods module"
+          end
+          klass.prepend Operation::OriginalOperationMethods
           klass
         end
       end
 
       RAW_METHODS = %i[opFromJSON deserialize diff].freeze