LayoutTests/fast/inline/negative-margin-triggers-content-wrap.html

<style>
img {
  height: 20px;
  width: 100px;
  max-width: 100%; /* this is to trigger legacy preferred width computation */

  margin-left: -10px;
  background-color: green;
}

div {
  width: max-content;
  font-family: Ahem;
}
</style>
<div><img>PASS if content does not wrap.</div>