ladybird/Tests/LibWeb/Text/input/Editing/execCommand-selectAll.html

<script src="../include.js"></script>
<div contenteditable="true">
    <span>foobar</span>
    <ul>
        <li>foo</li>
        <li>bar</li>
        <li>baz</li>
    </ul>
</div>
<script>
    test(() => {
        const selection = getSelection();

        const reportSelection = () => {
            if (selection.rangeCount === 0) {
                println('No range.');
                return;
            }
            const range = selection.getRangeAt(0);
            println(`${range.startContainer.nodeName} ${range.startOffset} - ${range.endContainer.nodeName} ${range.endOffset}`);
        };

        reportSelection();

        let divElm = document.querySelector('div');
        let range = document.createRange();
        range.setStart(divElm, 0);
        range.setEnd(divElm, 0);
        selection.addRange(range);

        reportSelection();

        // Perform selectAll
        document.execCommand('selectAll');
        reportSelection();
    });
</script>