test_sync_xhr_nested.html

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<!DOCTYPE HTML>

<!-- vim: set shiftwidth=2 tabstop=2 autoindent cindent expandtab: -->

<html>

<head>

  <script src="/tests/SimpleTest/SimpleTest.js"></script>

  <script src="/tests/SimpleTest/EventUtils.js"></script>

  <link rel="stylesheet" href="/tests/SimpleTest/test.css">

</head>

<body >

  <script type="text/javascript">

  SimpleTest.waitForExplicitFinish();

  var childXHRFinished = false;

  var xhrFinished = false;

  var subTab = null;

  function receivedInput() {

    ok(xhrFinished, "Input event should be handled after the sync xhr");

    SimpleTest.finish();

  function startSlowXHR() {

    var xhr = new XMLHttpRequest();

    xhr.open("GET", "slow.sjs", false);

    subTab.startSlowXHR();

    xhr.send(null);

    // Above xhr.send(null) should spin up an event loop to process the inner XHR first

    ok(childXHRFinished, "Child's XHR should be finished first");

    xhrFinished = true;

  async function runTest() {

    await SpecialPowers.pushPrefEnv({

      set: [["dom.input_events.canSuspendInBCG.enabled", true]]

});

    subTab = window.open("file_sync_xhr_nested_helper.html");

    await new Promise((r) => {

      subTab.addEventListener("load", r);

});

    startSlowXHR();

  runTest();

  </script>

</body>

</html>