# File test/unit/assertions.rb, line 202
      def assert_not_same(expected, actual, message="")
        full_message = build_message(message, expected, expected.__id__, actual, actual.__id__) do |arg1, arg2, arg3, arg4|
          "<#{arg1}:#{arg2}> expected to not be equal? to\n" +
          "<#{arg3}:#{arg4}>"
        end
        assert_block(full_message) { !actual.equal?(expected) }
      end