css/css-images/object-view-box-property-changed.html

<!DOCTYPE html>
<html class=reftest-wait>
<title>Changing CSS object-view-box should trigger relayout</title>
<link rel="author" href="mailto:khushalsagar@chromium.org">
<link rel="match" href="object-view-box-property-changed-ref.html">
<link rel="help" href="https://drafts.csswg.org/css-images-4/#the-object-view-box">

<script src="/common/reftest-wait.js"></script>
<script src="/common/rendering-utils.js"></script>

<style>
.view_box_subset {
  object-fit: fill;
  margin: 5px;
}
</style>

<body>
<img class="view_box_subset" src="support/exif-orientation-6-ru.jpg"></img>
</body>

<script>
async function runTest(image) {
  // Wait for at least one frame to ensure changing object-view-box triggers a
  // relayout.
  await waitForAtLeastOneFrame();
  image.style.objectViewBox = "inset(50px 0px 0px 0px)";
  await waitForAtLeastOneFrame();
  requestAnimationFrame(takeScreenshot);
}

let image = document.getElementsByTagName("img")[0];
image.onload = runTest(image);
</script>