layer at (0,0) size 800x600
  RenderView at (0,0) size 800x600
layer at (0,0) size 800x412
  RenderBlock {html} at (0,0) size 800x412
    RenderBody {body} at (8,14) size 784x19
      RenderBlock {p} at (0,0) size 784x19
        RenderText {#text} at (0,0) size 418x19
          text run at (0,0) width 418: "This test case should produce a sine-wave stroked with 1px black."
    RenderBlock (anonymous) at (0,47) size 800x365
      RenderHTMLCanvas {canvas} at (0,0) size 480x360
