chromium/third_party/blink/web_tests/external/wpt/css/css-transitions/idlharness-2.html

<!doctype html>
<title>css-transitions-2 IDL tests</title>
<link rel="help" href="https://drafts.csswg.org/css-transitions-2/">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/WebIDLParser.js"></script>
<script src="/resources/idlharness.js"></script>
<!-- used to provide objects -->
<style>
  @starting-style {
    #id { color: green }
  }
</style>
<script>
  "use strict";

  idl_test(
    ['css-transitions-2'],
    ['web-animations', 'cssom', 'html', 'dom'],
    idl_array => {
      idl_array.add_objects({
        Animation: ['new Animation()'],
        CSSStartingStyleRule: ['sheet.cssRules[0]'],
      });
      self.sheet = document.styleSheets[0];
    }
  );
</script>