fixed-position-composited-page-scale-scroll.html

<!DOCTYPE html>
<html>
<head>
<style>
.fixed-no-z-index {
  position: absolute;
  left: 10px;
}
.fixed-with-z-index {
  position: fixed;
  z-index: 1;
  left: 10px;
  will-change:transform;
}
</style>
<script>
  if (window.internals && window.eventSender) {
    internals.settings.setPreferCompositingToLCDTextEnabled(true);
    internals.setPageScaleFactor(2);
  }
  function test() {
    window.scrollTo(100,100);
    if (window.testRunner)
      testRunner.dumpAsText();
  }
</script>
</head>
<body onload="test();" style="width:2000px;height:2000px;">
<div class="fixed-no-z-index">This test should not hit an assertion in LayoutGeometryMap in debug builds</div><br>
<div class="fixed-with-z-index">This test should not hit an assertion in LayoutGeometryMap in debug builds</div>
</body>
</html>

chromium/third_party/blink/web_tests/compositing/geometry/fixed-position-composited-page-scale-scroll.html