chromium/third_party/blink/web_tests/external/wpt/fenced-frame/window-open-user-activation.https.html

<!DOCTYPE html>
<meta name="timeout" content="long">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/common/utils.js"></script>
<script src="/common/dispatcher/dispatcher.js"></script>
<script src="/common/get-host-info.sub.js"></script>
<script src="resources/utils.js"></script>
<title>Test activation behavior with window.open() in fenced frames</title>

<body>
  <script>
    promise_test(async (t) => {
      const fencedframe = await attachFencedFrameContext(
                  {generator_api: 'fledge'});
      t.add_cleanup(async () => document.body.removeChild(fencedframe.element));

      let opened_key = token();
      await fencedframe.execute((opened) => {
        assert_false(navigator.userActivation.isActive);
        let opened_url = generateURL('embeddee.html', [opened]);
        window.open(opened_url, '_unfencedTop');
      }, [opened_key]);

      let result = await Promise.race([
        nextValueFromServer(opened_key),
        new Promise((resolve) => {
          t.step_timeout(() => resolve('timeout'), 2000);
        })
      ]);

      assert_equals(result, 'timeout');
    }, 'Test that _unfencedTop navigation fails without transient user ' +
       'activation.');

    // TODO(averge): Once fenced frames require user activation for popup
    // navigations, add a test here to match that behavior.
  </script>
</body>