# File test/test_spider.rb, line 148
  def test_overlay
    g = Gruff::Spider.new(20)
    g.title = "George (blue) vs Sarah (white)"
    @datasets.each do |data|
      g.data(data[0], data[1])
    end
    g.write("test/output/spider_overlay_1.png")
    
    g = Gruff::Spider.new(20)
    g.title = "Transparent background"
    g.hide_text = true
    g.hide_axes = true
    g.transparent_background = true
    @datasets = [
      [:Strength, [18]],
      [:Dexterity, [10]],
      [:Constitution, [18]],
      [:Intelligence, [8]],
      [:Wisdom, [14]],
      ["Charisma", [4]],
      ]   
    @datasets.each do |data|
      g.data(data[0], data[1])
    end
    g.marker_color = "#4F6EFF"
    g.write("test/output/spider_overlay_2.png")
  end