chromium/src/third_party/blink/web_tests/animations/stability/keyframeeffect-no-target-crash.html

<div id="target">This test passes if it does not crash.</div>
<script src="../../resources/testharness.js"></script>
<script src="../../resources/testharnessreport.js"></script>
<script>
  var test = async_test("Test if it does not crash when KeyframeEffect has no target");

  let effect = new KeyframeEffect(null, null, {duration: 1000});
  let animation = new Animation(effect);

  requestAnimationFrame(test.step_func_done(() => {}));
</script>
<style>
@keyframes frame { }
</style>