Viewport <#document> at (0,0) content-size 800x600 children: not-inline
  BlockContainer <html> at (0,0) content-size 800x39 [BFC] children: not-inline
    BlockContainer <body> at (8,8) content-size 784x23 children: inline
      frag 0 from TextNode start: 0, length: 35, rect: [8,8 362.75x23] baseline: 17.5
          "This test passes if we don't crash."
      TextNode <#text>

ViewportPaintable (Viewport<#document>) [0,0 800x600]
  PaintableWithLines (BlockContainer<HTML>) [0,0 800x39]
    PaintableWithLines (BlockContainer<BODY>) [8,8 784x23]
      TextPaintable (TextNode<#text>)
