require-corp-about-srcdoc.https.html

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This test has a WPT meta file that expects 1 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /html/cross-origin-embedder-policy/require-corp-about-srcdoc.https.html - WPT Dashboard Interop Dashboard

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

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

<script>

promise_test(t => {

  return new Promise(resolve => {

    window.addEventListener("DOMContentLoaded", resolve);

});

}, "Wait for the DOM to be built.");

promise_test(async t => {

  let iframe = document.createElement("iframe");

  let iframe_loaded =  new Promise(resolve => iframe.onload = resolve);

  iframe.srcdoc = "loaded document";

  document.body.appendChild(iframe);

  // The about:srcdoc document can load.

  await iframe_loaded;

  assert_not_equals(iframe.contentDocument, null);

  assert_equals(iframe.contentDocument.body.innerText, "loaded document");

}, "about:srcdoc can always be embedded by a 'require-corp' document");

promise_test(async t => {

  let iframe_C = document.createElement("iframe");

  let iframe_B = document.createElement("iframe");

  iframe_B.srcdoc = "dummy content";

  iframe_C.src = "/common/blank.html";

  let iframe_B_loaded = new Promise(resolve => iframe_B.onload = resolve);

  document.body.appendChild(iframe_B);

  // The about:srcdoc frame must be able to load.

  await iframe_B_loaded;

  assert_not_equals(iframe_B.contentDocument, null);

  assert_equals(iframe_B.contentDocument.body.innerText, "dummy content");

  iframe_B.contentDocument.body.appendChild(iframe_C);

  // The document nested under about:srcdoc must not load because it does not

  // specify the Cross-Origin-Embedder-Policy: require-corp header.

  // An error page must be displayed instead.

  // See https://github.com/whatwg/html/issues/125 for why a timeout is used

  // here. Long term all network error handling should be similar and have a

  // reliable event.

  assert_equals(iframe_C.contentWindow.location.href, "about:blank");

  assert_not_equals(iframe_C.contentDocument, null);

  await t.step_wait(() => iframe_C.contentDocument === null);

}, "A(B(C)) A=require-corp, B=about:srcdoc, C=no-require-corp => C can't load");

</script>