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layer at (0,0) size 800x600
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          text run at (0,0) width 744: "This test ensures selection that crosses the shadow DOM boundary of a readonly input element cannot be made by a"
          text run at (0,20) width 79: "mouse drag."
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          text run at (0,0) width 745: "To manually test, select text by a mouse drag starting in \"hello\" and ending in \"world\". Selection should only extend"
          text run at (0,20) width 158: "inside the input element."
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    RenderText {#text} at (0,0) size 34x20
      text run at (0,0) width 34: "hello"
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