    # File lib/spec/story/runner/scenario_runner.rb, line 9
            def run(scenario, world)
              @listeners.each { |l| l.scenario_started(scenario.story.title, scenario.name) }
              run_story_ignoring_scenarios(scenario.story, world)

              world.start_collecting_errors

              unless scenario.body
                @listeners.each { |l| l.scenario_pending(scenario.story.title, scenario.name, '') }
                return true
              end

              world.instance_eval(&scenario.body)
              if world.errors.empty?
                @listeners.each { |l| l.scenario_succeeded(scenario.story.title, scenario.name) }
              else
                if Spec::Example::ExamplePendingError === (e = world.errors.first)
                  @listeners.each { |l| l.scenario_pending(scenario.story.title, scenario.name, e.message) }
                else
                  @listeners.each { |l| l.scenario_failed(scenario.story.title, scenario.name, e) }
                  return false
                end
              end
              true
            end