chromium/third_party/blink/web_tests/animations/stability/animation-name-none.html

<!doctype html>
<html lang="en">
<head>
  <title>Test setting animation name to none</title>
  <style>
    @keyframes test {}
    #test {
      animation-name: test;
    }
  </style>
</head>
<div id="test"></div>
<script src="../../resources/testharness.js"></script>
<script src="../../resources/testharnessreport.js"></script>
<script>
  setup({single_test: true});
  document.querySelector('#test').style.animationName = 'none';
  done();
</script>