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<!doctype html>
<style>
.spacer { height: 200vh; }
</style>
<script>
  function loadFailed() {
    parent.ok(false, "Image load should not fail");
  }
</script>
<div class="spacer"></div>
<img id="fast" src="file_SlowTallImage.sjs?fast" onerror="loadFailed()">
<div class="spacer"></div>
<img id="slow" src="file_SlowTallImage.sjs?slow" onerror="loadFailed()">
<div class="spacer"></div>
<script>
onload = function() {
  setTimeout(function() {
    let rect = document.getElementById("slow").getBoundingClientRect();
    parent.is(rect.height, 1000, "#slow should take space");
    parent.is(rect.top, 0, "#slow should be at the top of the viewport");
    parent.SimpleTest.finish();
  }, 0);
}
</script>