chromium/third_party/blink/web_tests/external/wpt/fedcm/fedcm-multi-idp/fedcm-multi-idp-mediation-optional.https.html

<!DOCTYPE html>
<title>Federated Credential Management API multi IDP optional mediation tests.</title>
<link rel="help" href="https://fedidcg.github.io/FedCM">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/testdriver.js"></script>
<script src="/resources/testdriver-vendor.js"></script>

<script type="module">
import {request_options_with_two_idps,
        fedcm_test,
        fedcm_get_and_select_first_account,
        fedcm_select_account_promise} from '../support/fedcm-helper.sub.js';

fedcm_test(async t => {
  return fedcm_get_and_select_first_account(t, request_options_with_two_idps('optional'));
}, "Mediation optional can succeed without a returning account.");

fedcm_test(async t => {
  // Sign in to the first account.
  await fedcm_get_and_select_first_account(t, request_options_with_two_idps());

  // Now use mediation:optional and it should work.
  return navigator.credentials.get(request_options_with_two_idps('optional'));
}, "Mediation optional automatically succeeds when there is one returning account.");

fedcm_test(async t => {
  // Sign in to the first account.
  await fedcm_get_and_select_first_account(t, request_options_with_two_idps());

  // Sign in to the second account as well.
  let cred = navigator.credentials.get(request_options_with_two_idps());
  fedcm_select_account_promise(t, 1);
  await cred;

  // Now use mediation:optional.
  return fedcm_get_and_select_first_account(t, request_options_with_two_idps('optional'));
}, "Mediation optional can succeed when there is more than one returning account.");
</script>