    # File lib/spec/story/runner/plain_text_story_runner.rb, line 29
            def run(story_runner=Spec::Story::Runner.story_runner)
              raise "You must set a path to the file with the story. See the RDoc." if @story_file.nil?
              mediator = Spec::Story::Runner::StoryMediator.new(steps, story_runner, @options)
              parser = Spec::Story::Runner::StoryParser.new(mediator)

              story_text = File.read(@story_file)
              parser.parse(story_text.split("\n"))

              mediator.run_stories
            end