gecko-dev/layout/reftests/css-gradients/radial-zero-length-1d.html

<div style="background: -moz-radial-gradient(left, ellipse closest-side, red, white 100px, black); width: 300px; height: 300px;"></div>
<div style="background: -moz-repeating-radial-gradient(left, ellipse closest-side, red, white 100px, black); width: 300px; height: 300px;"></div>