chromium/third_party/blink/web_tests/external/wpt/css/css-transforms/transform-and-individual-transform-properties-computed-style.html

<link rel="help" href="https://www.w3.org/TR/css-transforms-2/#individual-transforms">
<script type="text/javascript" src="/resources/testharness.js"></script>
<script type="text/javascript" src="/resources/testharnessreport.js"></script>

<div style="scale: 2; rotate: 90deg; translate: 100px; transform: translateY(100px)">

<script type="text/javascript">

test(() => {
    const style = window.getComputedStyle(document.querySelector("div"));
    assert_equals(style.scale, "2", "The scale computed style should match the inline style.");
    assert_equals(style.rotate, "90deg", "The rotate computed style should match the inline style.");
    assert_equals(style.translate, "100px", "The translate computed style should match the inline style.");
    assert_equals(style.transform, "matrix(1, 0, 0, 1, 0, 100)", "The transform computed style should match the inline style.");
}, "The transform property should not be affected by individual transform properties.");

</script>