| <!DOCTYPE html> | 
 | <html> | 
 |   <head> | 
 |     <title>Async request denied at preflight because of non-CORS-safelisted method</title> | 
 |     <script src="/resources/testharness.js"></script> | 
 |     <script src="/resources/testharnessreport.js"></script> | 
 |     <script src="/common/get-host-info.sub.js"></script> | 
 |     <script src="/common/utils.js"></script> | 
 |   </head> | 
 |   <body> | 
 |     <script type="text/javascript"> | 
 |     const uuid = token(); | 
 |     const url = get_host_info().HTTP_REMOTE_ORIGIN + | 
 |           "/xhr/resources/access-control-preflight-denied.py?token=" + uuid; | 
 |  | 
 |     async_test((test) => { | 
 |       let xhr = new XMLHttpRequest; | 
 |       xhr.open("GET", url + "&command=reset", false); | 
 |       xhr.send(); | 
 |  | 
 |       xhr = new XMLHttpRequest; | 
 |       xhr.open("DELETE", url + "&command=method", true); | 
 |  | 
 |       xhr.onload = test.unreached_func( | 
 |           "Cross-domain access with non-CORS-safelisted method allowed without throwing exception"); | 
 |  | 
 |       xhr.onerror = test.step_func_done(() => { | 
 |         xhr = new XMLHttpRequest; | 
 |         xhr.open("GET", url + "&command=complete", false); | 
 |         xhr.send(); | 
 |         assert_equals(xhr.responseText, "Request successfully blocked."); | 
 |       }); | 
 |  | 
 |       xhr.send(); | 
 |     }, "Async request denied at preflight"); | 
 |     </script> | 
 |   </body> | 
 | </html> |