def run_all
      return pending_result unless test_paths?
      Guard::UI.info("Resetting", reset: true)
      do_run{ @runner.run(@test_paths) }
    end
def run_all
      return pending_result unless test_paths?
      Guard::UI.info("Resetting", reset: true)
      do_run{ @runner.run(@test_paths) }
    end
Called when just `enter` is pressed
 This method should be principally used for long action like running all specs/tests/...

 @raise [:task_has_failed] when run_all has failed
 @return [Object] the task result