cross-origin-iframe.html

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<!DOCTYPE html>

<script src="/common/utils.js"></script>

<script src="/resources/testharness.js"></script>

<script src="/resources/testharnessreport.js"></script>

<script src="/common/get-host-info.sub.js"></script>

<script src="/speculation-rules/prerender/resources/utils.js"></script>

<script src="/speculation-rules/prerender/resources/deferred-promise-utils.js"></script>

<body>

<script>

async function main() {

  const crossOriginUrl =

      new URL('cross-origin-iframe-src.html',

              get_host_info()['HTTPS_REMOTE_ORIGIN'] +

                  window.location.pathname);

  // Start loading a cross-origin iframe. The iframe messages us with the

  // value of its document.prerendering, which should be false since load

  // is delayed until after activation.

  const crossOriginIframe = document.createElement('iframe');

  const gotMessage = new Promise((resolve, reject) => {

    window.addEventListener('message', (e) => {

     if (e.data == 'document.prerendering: false')

       resolve();

     else

       reject('bad message: ' + e.data);

});

});

  crossOriginIframe.src = crossOriginUrl.href;

  document.body.appendChild(crossOriginIframe);

  // To give the test a chance to fail by giving enough time if it loads the

  // cross-origin iframe instead of deferring, wait for a same-origin iframe to

  // load before proceeding with the test.

  await createFrame('empty.html');

  // Start the event collector to trigger activation.

  const prerenderEventCollector = new PrerenderEventCollector();

  prerenderEventCollector.start(gotMessage,

                                'iframe loaded');

// The main test page (cross-origin-iframe.https.html) loads the initiator

// page, then the initiator page will prerender itself with the

// `prerendering` parameter.

const params = new URLSearchParams(location.search);

if (!params.has('prerendering')) {

  const rule_extras = {'target_hint': getTargetHint()};

  loadInitiatorPage(rule_extras);

} else {

  main();

</script>

</body>