layer at (0,0) size 800x600
  RenderView at (0,0) size 800x600
layer at (0,0) size 800x20
  RenderBlock {test} at (0,0) size 800x20
    RenderBlock {div} at (0,0) size 800x20
      RenderInline {testA} at (0,0) size 289x19 [bgcolor=#00FF00]
        RenderText {#text} at (0,0) size 289x19
          text run at (0,0) width 289: "This paragraph should have a green background"
      RenderText {#text} at (0,0) size 0x0