dom/performance/tests/test_performance_aborted_status.html

   1 <!DOCTYPE HTML>
   2 <html>
   3   <head>
   4     <meta charset="utf-8">
   5     <title>Test for Bug 1916356</title>
   6     <script src="/tests/SimpleTest/SimpleTest.js"></script>
   7   </head>
   8   <body>
   9     <script>
  10       SimpleTest.waitForExplicitFinish();
  11
  12       (async () => {
  13         // server.sjs?slow doesn't respond, which results in the
  14         // HttpBaseChannel::mResponseHead being nullptr.
  15         const slowXHR = new XMLHttpRequest();
  16         slowXHR.open("GET", "server.sjs?slow");
  17         slowXHR.send();
  18
  19         // server.sjs?fast quickly responds.
  20         // Perform this and wait for the load, in order to ensure the
  21         // network requests performed there reaches necko and the
  22         // corresponding resource entry is created for server.sjs?slow as well.
  23         const fastXHR = new XMLHttpRequest();
  24         fastXHR.open("GET", "server.sjs?fast");
  25         const fastLoadPromise = new Promise(resolve => {
  26           fastXHR.addEventListener("load", resolve);
  27         });
  28         fastXHR.send();
  29         await fastLoadPromise;
  30
  31         const slowEntryPromise = new Promise(resolve => {
  32           new PerformanceObserver(list => {
  33             const entries = list.getEntries();
  34             for (const entry of entries) {
  35               if (entry.name.includes("server.sjs?slow")) {
  36                 resolve(entry);
  37               }
  38             }
  39           }).observe({ entryTypes: [ "resource" ] });
  40         });
  41
  42         slowXHR.abort();
  43
  44         const slowEntry = await slowEntryPromise;
  45         is(slowEntry.responseStatus, 0,
  46            "responseStatus for the request with no response should be 0");
  47
  48         SimpleTest.finish();
  49       })();
  50     </script>
  51   </body>
  52 </html>