navigator-subapp.https.html | Explore in Territory

<!DOCTYPE html>
<title>navigator.subApp API test</title>
<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="/speculation-rules/prerender/resources/utils.js"></script>

<body>
<script>
promise_test(async () => {
  const uid = token();
  const bc = new PrerenderChannel('prerender-channel', uid);

  const gotMessage = new Promise(resolve => {
    bc.addEventListener('message', e => {
      resolve(e.data);
    }, {
      once: true
    });
  });

  startPrerendering(`resources/subapp.html?uid=${uid}`);
  const result = await gotMessage;
  assert_equals(result, 'TypeError');
}, 'prerendering pages should not be able to access subapp API.');
</script>

chromium/third_party/blink/web_tests/wpt_internal/prerender/navigator-subapp.https.html