credential-management/fedcm-returning-account-auto-reauthn.https.html

<!DOCTYPE html>
<title>Federated Credential Management API network request 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_mediation_optional,
        fedcm_test,
        select_manifest,
        fedcm_get_and_select_first_account} from './support/fedcm-helper.sub.js';

fedcm_test(async t => {
  let test_options = request_options_with_mediation_optional("manifest_with_single_account.json");
  await select_manifest(t, test_options);

  // Signs in john_doe so that they will be a returning user
  let cred = await fedcm_get_and_select_first_account(t, test_options);
  assert_equals(cred.token, "account_id=john_doe");

  test_options = request_options_with_mediation_optional("manifest_with_two_accounts.json");
  await select_manifest(t, test_options);

  // There are two accounts "Jane" and "John" returned in that order. Without
  // auto re-authn, the first account "Jane" would be selected and an token
  // would be issued to that account. However, since "John" is returning and
  // "Jane" is a new user, the second account "John" will be selected.
  cred = await navigator.credentials.get(test_options);
  assert_equals(cred.token, "account_id=john_doe");
  assert_equals(cred.isAutoSelected, true);
}, "Test that the returning account from the two accounts will be auto re-authenticated.");
</script>