<!DOCTYPE html>
<title>SignedHTTPExchange's fallback url must not have UTF-8 BOM</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/common/get-host-info.sub.js"></script>
<script src="./resources/sxg-util.js"></script>
<body>
<script>
promise_test(async (t) => {
try {
const sxgUrl = get_host_info().HTTP_ORIGIN + '/signed-exchange/resources/sxg-inner-url-bom.sxg';
const message = await openSXGInIframeAndWaitForMessage(t, sxgUrl);
if (message.is_fallback) {
assert_unreached('Fallback redirect should not have happened');
} else {
assert_unreached('SXG should not have loaded');
}
} catch (e) {
assert_equals(e, 'timeout');
}
}, "SignedHTTPExchange's fallback url must not have UTF-8 BOM");
</script>
</body>