data-expected-height="197" data-offset-y="-4" data-offset-x="179"
  >
</div>
<!-- SVG tests -->
<!-- SVGs are special: any combination of intrinsic_size and aspect_ratio
  can happen. -->
<!-- Just viewbox. Has intrinsic aspect ratio, but no width/height -->
<div class="container">
  <img class="target" src="data:image/svg+xml,%3Csvg  xmlns='http://www.w3.org/2000/svg' %3E%3Crect width='100%' height='100%' style='fill:rgb(0,255,0);'/%3E%3C/svg%3E" style=""
  data-expected-width="338" data-expected-height="1