gecko/layout/reftests/svg/foreignObject-start-hidden-01.svg

<svg xmlns="http://www.w3.org/2000/svg" version="1.1" class="reftest-wait"
     height="0" width="0">
  <script>
    document.addEventListener("MozReftestInvalidate", doTest, false);
    setTimeout(doTest, 4000); // fallback for running outside reftest

    function doTest() {
      document.documentElement.removeAttribute("width");
      document.documentElement.removeAttribute("height");
      document.documentElement.removeAttribute("class");
    }
  </script>
  <rect width="100%" height="100%" fill="red"/>
  <foreignObject width="100%" height="100%">
    <div xmlns="http://www.w3.org/1999/xhtml"
         style="background:lime; width:100%; height:100%;"/>
  </foreignObject>
</svg>