 is a vertical green stripe to the left of a yellow vertical stripe. You should see no red.</p>
    <svg>
       <!-- Fill with Gradient to avoid false positive. -->
        <defs>
            <linearGradient id="grad" x2="0%" y2="100%">
                <stop offset="50%" stop-color="yellow"/>
                <stop offset="50%" stop-color="green"/>
            </linearGradient>
        </defs>
        <rect x="1" y="1" width="98" height="98" fill="red"/>
        <g class="testGroup">
            <rect y="-1