lib/differential/calculator/item.rb in differential-1.0.4 vs lib/differential/calculator/item.rb in differential-1.0.5

@@ -23,10 +23,10 @@
       def initialize(id)
         raise ArgumentError, 'id is required' unless id
 
         @a_records  = []
         @b_records  = []
-        @id         = id
+        @id         = id.is_a?(::Differential::Parser::Id) ? id : ::Differential::Parser::Id.new(id)
       end
 
       def add(record, side)
         raise ArgumentError, 'record is required' unless record
         raise ArgumentError, 'side is required'   unless side