access-control-expose-headers-on-redirect.html

<!DOCTYPE html>
<html>
<head>
<title>XHR should respect access-control-expose-headers header on redirect</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">
async_test((test) => {
  const xhr = new XMLHttpRequest;

  xhr.onerror = test.unreached_func("Unexpected error.");

  xhr.onload = test.step_func_done(() => {
    assert_equals(xhr.status, 200);
    assert_equals(xhr.getResponseHeader('foo'), 'bar');
    assert_equals(xhr.getResponseHeader('hoge'), null);
  });

  const destination = get_host_info().HTTP_REMOTE_ORIGIN +
    '/common/blank.html?pipe=header(access-control-allow-origin,*)|' +
    'header(access-control-expose-headers,foo)|' +
    'header(foo,bar)|header(hoge,fuga)';
  const url =
    'resources/redirect.py?location=' + encodeURIComponent(destination);
  xhr.open('GET', url);
  xhr.send();
});
</script>
</body>
</html>

chromium/third_party/blink/web_tests/external/wpt/xhr/access-control-expose-headers-on-redirect.html