frame-navigation-inner-simple.https.html

<!DOCTYPE html>
<script src="/resources/testharness.js"></script>
<script src="utils.js"></script>
<title>Test that a fenced frame successfully loaded.</title>

<body>
  <script>
      // This file is meant to run in a <fencedframe>. It reports back to the
      // outermost page to confirm that loading succeeded.
      const [navigation_key, navigation_ack_key] = parseKeylist();
      writeValueToServer(navigation_key, "pass");
  </script>
</body>

chromium/third_party/blink/web_tests/external/wpt/fenced-frame/resources/frame-navigation-inner-simple.https.html