css/css-view-transitions/capture-with-opacity-zero-child.html

<!doctype html>
<html class=reftest-wait>
<title>View transitions: visibility hidden child</title>
<link rel="help" href="https://drafts.csswg.org/css-view-transitions-1/">
<link rel="author" href="mailto:vmpstr@chromium.org">
<link rel="match" href="capture-with-visibility-hidden-child-ref.html">
<meta name="fuzzy" content="maxDifference=0-5; totalPixels=0-300">
<script src="/common/reftest-wait.js"></script>

<style>
.target {
  width: 100px;
  height: 100px;
  view-transition-name: target;
  background: blue;
}
.invisible {
  width: 500px;
  height: 500px;
  opacity: 0;
}

::view-transition-group(root) {
  visibility: hidden;
  animation-duration: 500s;
}

::view-transtion-group(*),
::view-transtion-image-pair(*) {
  animation-play-state: paused;
}

::view-transition-old(*) {
  animation: unset;
  opacity: 1;
}

::view-transition-new(*) {
  animation: unset;
  opacity: 0;
}

::view-transition {
  background: pink;
}
</style>

<div class=target>
  <div class=invisible></div>
</div>

<script>
failIfNot(document.startViewTransition, "Missing document.startViewTransition");

function runTest() {
  const transition = document.startViewTransition();
  transition.ready.then(takeScreenshot);
}

onload = () => requestAnimationFrame(() => requestAnimationFrame(runTest));
</script>