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<!DOCTYPE html>
<html>
<head>
<title>Tests CORS denying preflighted request to resource without CORS headers for OPTIONS</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/common/get-host-info.sub.js"></script>
</head>
<body>
<script type="text/javascript">
test(function() {
const xhr = new XMLHttpRequest;
xhr.open("GET", get_host_info().HTTP_REMOTE_ORIGIN +
"/xhr/resources/access-control-basic-options-not-supported.py", false);
// Non-CORS-safelisted header
xhr.setRequestHeader("x-test", "foobar");
// This fails because the server-side script is not prepared for an OPTIONS request
assert_throws_dom("NetworkError", () => xhr.send());
assert_equals(xhr.status, 0);
}, "Preflighted cross-origin request denied");
</script>
</body>
</html>
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