chromium/third_party/blink/web_tests/external/wpt/css/css-view-transitions/inline-element-size.html

<!DOCTYPE html>
<html class="reftest-wait">
<title>View transitions: capture elements with display inline</title>
<link rel="help" href="https://drafts.csswg.org/css-view-transitions-1/">
<link rel="author" href="mailto:[email protected]">
<link rel="match" href="inline-element-size-ref.html">
<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
<script src="/common/reftest-wait.js"></script>
<style>
:root {
  font: 20px/1 Ahem;
}

#box {
  background: green;
  view-transition-name: target;
}

/* We're verifying what we capture, so just display the old contents for 5 minutes.  */
html::view-transition-group(*) { animation-duration: 300s; }
html::view-transition-group(target) { background: green; }
html::view-transition-new(*) { animation: unset; opacity: 0; }
html::view-transition-old(*) { animation: unset; opacity: 1; }
/* hide the root so we show transition background to ensure we're in a transition */
html::view-transition-group(root) { animation: unset; opacity: 0; }
html::view-transition { background: pink; }
</style>

<span id=box>BOX</span>
<script>
failIfNot(document.startViewTransition, "Missing document.startViewTransition");

async function runTest() {
  let t = document.startViewTransition();
  t.ready.then(takeScreenshot);
}
onload = () => requestAnimationFrame(() => requestAnimationFrame(runTest));
</script>

</html>