A basic wrapper for drag and drop simulation

drag_and_drop_simulator.rb

class DragAndDropSimulator
  def initialize(page, drag)
    @page = page
    @drag = drag
  end

  def up(num)
    drag_and_drop(num)
  end

  def down(num)
    drag_and_drop(num*-1)
  end

private

  def drag_and_drop(num)
    @page.execute_script %{
      $.getScript("https://raw.github.com/nowk/jquery.simulate.drag-sortable.js/master/jquery.simulate.drag-sortable.js", function() {
        $("#{@drag}").simulateDragSortable({move: #{num}, handle: '.handle'});
      });
    }
  end
end

test_helper.rb

def drag_and_drop(selector)
  DragAndDropSimulator.new(page, selector)
end