<!DOCTYPE html>
<title>Credential Management API: preventSilentAccess() basics.</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script>
promise_test(function(t) {
    return promise_rejects(t, "NotSupportedError",
            navigator.credentials.preventSilentAccess());
}, "navigator.credentials.preventSilentAccess().");
</script>