RPN w one test passting

RPN new

class RPNCalculator

  attr_accessor :calculator, :result

  def initialize
    @calculator = []
    @result = 0
  end
  
  def push(arg)
    @calculator << arg
  end
  
  def plus
     @calculator.each do |i|
       @result += i
     end
   end
   
   def value
     @result
   end

end