fedcm-third-party-origin-trial-interfaces.html

<!DOCTYPE html>
<meta charset="utf-8">
<title>FedCM API - interfaces and properties exposed by origin trial via third party token</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/origin-trials-helper.js"></script>
<script src="http://localhost:8000/origin_trials/webexposed/resources/fedcm-origin-trial.js"></script>
<script>
    test(t => {
      OriginTrialsHelper.check_properties_exist(this,
        {
          'IdentityCredential': ['token'],
        });
  }, 'FedCM API interfaces and properties in Origin-Trial enabled document.');
</script>

chromium/third_party/blink/web_tests/http/tests/origin_trials/webexposed/fedcm-third-party-origin-trial-interfaces.html