require 'spec' class Kalkulator def push(n) @args ||= [] @args << n end def add @args.inject(0){|n,sum| sum+=n} end end Before do @calc = Kalkulator.new end After do end Given /at jeg har tastet inn (\d+)/ do |n| @calc.push n.to_i end When 'jeg summerer' do @result = @calc.add end Then /skal resultatet være (\d*)/ do |result| @result.should == result.to_i end