<DOCTYPE html>
<html>
<body>
<script src="../../resources/js-test.js"></script>
<script>
description("Tests that XMLHttpRequest.upload always returns the same object.");
jsTestIsAsync = true;

let xhr = new XMLHttpRequest();
xhr.upload.foo = 1;
gc();
setTimeout(() => {
    gc();
    shouldBe("xhr.upload.foo", "1");
    finishJSTest();
}, 0);
</script>
</body>
</html>