layer at (0,0) size 800x600
  RenderView at (0,0) size 800x600
layer at (0,0) size 800x52
  RenderBlock {html} at (0,0) size 800x52
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      RenderBlock {tests} at (0,0) size 784x36 [color=#008000]
        RenderBlock {testA} at (0,0) size 784x18
          RenderText {#text} at (0,0) size 138x17
            text run at (0,0) width 138: "This should be green."
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          RenderText {#text} at (0,0) size 138x17
            text run at (0,0) width 138: "This should be green."