<html>
<body>
<script src="/js-test-resources/js-test.js"></script>
<script>
    description("Makes sure that upload events are still fired after GC.");
    jsTestIsAsync = true;

    function progressHandler(evt)
    {
        testPassed("onprogress event fired on XMLHttpRequestUpload: " + evt + " [Loaded: " + evt.loaded + " Total: " + evt.total + "]");
    }

    function loadstartHandler(evt)
    {
        testPassed("loadstart event fired on XMLHttpRequestUpload: " + evt);
    }

    function loadHandler(evt)
    {
        testPassed("load event fired on XMLHttpRequestUpload: " + evt);
        finishJSTest();
    }

    let xhr = new XMLHttpRequest;
    xhr.upload.onprogress = progressHandler;
    xhr.upload.onloadstart = loadstartHandler;
    xhr.upload.onload = loadHandler;
    xhr.open("POST", "resources/post-echo.cgi", true);
    xhr.send("data");
    xhr = null;
    gc();
    setInterval(() => { gc(); }, 1);
</script>
</body>
</html>