LayoutTests/fast/text/whitespace/whitespace-with-zero-width-space-in-between.html

<style>
div {
  font-size: 20px;
  font-family: Monospace;
}
</style>
<!-- Do not collapse whitespace across zero-width space content -->
<div>X&#x200B;X</div>
<div>X &#x200B; X</div>
<div>X &#x200B; &#x200B; X</div>
<div>X &#x200B; &#x200B; &#x200B; X</div>
<div>X&#x200B;  &#x200B;X</div>
<div>X  &#x200B;  &#x200B;  X</div>