transform-inside-overflow-scroll.html

<html>
<head>
    <style>
        #scroll {
            width: 200px;
            height: 200px;
            overflow: scroll;
            border: 1px solid black;
        }
        
        #transform {
            width: 100px;
            height: 100px;
            background-color: green;
            transform: translateY(150px);
        }
    </style>
</head>

<body>

    <p id="result">
        FAIL. The transform has not been applied to the scrollHeight.
    </p>

    <div id="scroll">
        <div id="transform"></div>
    </div>

    <script>
        if (window.testRunner)
            testRunner.dumpAsText();
        var scroll = document.getElementById("scroll");
        var scrollHeight = scroll.scrollHeight;
        if (scrollHeight > 200) {
            var result = document.getElementById("result");
            result.innerHTML = "SUCCESS! The transform was applied to the scrollHeight!";
        }
    </script>
</body>
</html>

chromium/third_party/blink/web_tests/transforms/transform-inside-overflow-scroll.html