access-control-recursive-failed-request.htm

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This WPT test may be referenced by the following Test IDs:
- /xhr/access-control-recursive-failed-request.htm - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<html>

  <head>

    <title>Recursively repeated CORS requests with failed preflights should never result in unexpected behavior</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">

let requestCount = 0;

const requestMax = 10;

async_test((test) => {

  function preflightRequest() {

    const xhr = new XMLHttpRequest;

    xhr.onload = test.unreached_func("Request succeeded unexpectedly.");

    xhr.onerror = test.step_func(() => {

      assert_equals(xhr.status, 0);

      if (++requestCount >= requestMax) {

        test.done();

        return;

      preflightRequest();

});

    xhr.open("GET", get_host_info().HTTP_REMOTE_ORIGIN +

        "/xhr/resources/access-control-basic-denied.py");

    xhr.send();

  preflightRequest();

});

    </script>

  </body>

</html>