<script src="include.js"></script>
<p id="a">Uno</p>

<script>
    test(() => {
        var selection = window.getSelection();
        selection.setBaseAndExtent(a.firstChild, 3, a.firstChild, 3);
        selection.extend(a.firstChild, 0);
        if (selection.anchorNode !== a.firstChild
            || selection.anchorOffset !== 3) {
            println('FAIL: anchor has moved');
            return;
        }
        if (selection.focusNode !== a.firstChild
            || selection.focusOffset !== 0) {
            println('FAIL: focus is not where we expected');
            return;
        }
        println('PASS');
    })
</script>