ladybird/Tests/LibWeb/Text/input/quirks-mode-case-insensitive-class-selector.html

<!-- Quirks mode -->
<script src="include.js"></script>
<div class="tEsT"></div>
<script>
    test(() => {
        let divElement = document.querySelector(".test");
        println(`ParentNode.querySelector matches class selectors case-insensitively in quirks mode: ${divElement instanceof Element}`);
    });
</script>