chromium/third_party/blink/web_tests/fast/backgrounds/body-generated-image-propagated-to-root.html

<style>
    body { background-image: linear-gradient(black, white); }
    p { background-color: white; }
</style>
<body>
    <p style="background-color: white;">
        Test for <i><a href="https://bugs.webkit.org/show_bug.cgi?id=18445">https://bugs.webkit.org/show_bug.cgi?id=18445</a>
        Assertion failure in CSSGradientValue::image() when the body element has a background gradient</i>.
    </p>
    <p>
        The test passes if the root element&rsquo;s background is a linear
        gradient from black at the top to white at the bottom, and no assertion
        failure occurs.
    </p>
</body>