gistfile1.rb

class Game
  def initialize( printer, logicMachine )
  end

  def go
    while logicMachine.continue?
      printer.puts( "We are still playing the game." )
    end
  end
end



# -- THIS IS THE TEST

class RealPrinter
  def puts( message )
    puts message
  end
end

class MockPrinter
  attr_reader :timesMessageWasPrinted, :message

  def initialize
    @timesMessageWasPrinted = 0
  end

  def puts(message)
    @timesMessageWasPrinted += 1
    @message = message
  end

end

fakePrinter = MockPrinter.new
game = Game.new( fakePrinter, fakeLogicMachine )

game.go

fakePrinter.message.should == 'We are still playing the game.'
fakePrinter.timesMessageWasPrinted.should == 2