# File test/test_line.rb, line 421
  def line_graph_with_themes(size=nil)
    g = Gruff::Line.new(size)
    g.title = "Multi-Line Graph Test #{size}"
    g.labels = @labels
    g.baseline_value = 90
    @datasets.each do |data|
      g.data(data[0], data[1])
    end
    # Default theme
    g.write("test/output/line_theme_keynote_#{size}.png")
  
    g = Gruff::Line.new(size)
    g.title = "Multi-Line Graph Test #{size}"
    g.labels = @labels
    g.baseline_value = 90
    g.theme_37signals
    @datasets.each do |data|
      g.data(data[0], data[1])
    end
    g.write("test/output/line_theme_37signals_#{size}.png")
  

    g = Gruff::Line.new(size)
    g.title = "Multi-Line Graph Test #{size}"
    g.labels = @labels
    g.baseline_value = 90
    g.theme_rails_keynote
    @datasets.each do |data|
      g.data(data[0], data[1])
    end
    g.write("test/output/line_theme_rails_keynote_#{size}.png")
  
    g = Gruff::Line.new(size)
    g.title = "Multi-Line Graph Test #{size}"
    g.labels = @labels
    g.baseline_value = 90
    g.theme_odeo
    @datasets.each do |data|
      g.data(data[0], data[1])
    end
    g.write("test/output/line_theme_odeo_#{size}.png")
  end