<script src="../include.js"></script>
<script>
    test(() => {
        const h2 = document.querySelector("h2");
        document.getSelection().collapse(h2, 1);
        var h3 = document.createElement("h3");
        h2.insertBefore(h3, h2.firstChild)
        println(document.getSelection().rangeCount);
        printElement(document.getSelection().getRangeAt(0).startContainer);
        println(document.getSelection().getRangeAt(0).startOffset);
        printElement(document.getSelection().getRangeAt(0).endContainer);
        println(document.getSelection().getRangeAt(0).endOffset);
    });
</script><h2>