iframe-history-none-require-corp.https.html

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This WPT test may be referenced by the following Test IDs:
- /html/cross-origin-embedder-policy/iframe-history-none-require-corp.https.html - WPT Dashboard Interop Dashboard

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

<script>

promise_test(async test => {

  // TODO(arthursonzogni): Consider switching toward another message passing

  // API like:

  // /common/dispatcher/dispatcher.js

  const bc = new BroadcastChannel(token());

  const futureMessage = () => {

    return new Promise(resolve => {

      bc.onmessage = event => resolve(event.data);

});

};

  const prefix = document.URL.substr(0, document.URL.lastIndexOf('/'))

  const attribute = `?channelName=${bc.name}`;

  const url_coep_none =

    prefix + "/resources/navigate-none.sub.html" + attribute;

  const url_coep_require_corp =

    prefix + "/resources/navigate-require-corp.sub.html" + attribute;

  const w = window.open();

  test.add_cleanup(() => w.close());

  // Navigate to COEP:unsafe-none.

  w.location.href = url_coep_none;

  assert_equals(await futureMessage(), "loaded");

  assert_equals(w.location.href, url_coep_none);

  // For unknown reasons so far. Waiting in between the different navigations

  // avoids flakes.

  await new Promise(resolve => test.step_timeout(resolve, 1000));

  // Navigate to COEP:require-corp.

  w.location.href = url_coep_require_corp;

  assert_equals(await futureMessage(), "loaded");

  assert_equals(w.location.href, url_coep_require_corp);

  // For unknown reasons so far. Waiting in between the different navigations

  // avoids flakes.

  await new Promise(resolve => test.step_timeout(resolve, 1000));

  // Navigate back to COEP:unsafe-none, using the history API.

  // Note: `url_coep_none` already take the BFCache into account.

  w.history.back();

  assert_equals(await futureMessage(), "loaded");

  assert_equals(w.location.href, url_coep_none);

}, `"none" top-level: navigating a frame back from "require-corp" should succeed`);

</script>