chromium/third_party/blink/web_tests/external/wpt/css/css-flexbox/flexbox_flex-none-wrappable-content.html

<!DOCTYPE html>
<title>Specifying flex:none on wrappable content should give content its full width</title>
<link rel="help" href="http://www.w3.org/TR/css-flexbox-1/#flex-common">
<meta name="assert" content="When content has flex:none, it should be given its full width">
<link rel="match" href="flexbox_flex-none-wrappable-content-ref.html">

<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
<style>
span {
  font-family: Ahem;
  color: green;
}
</style>

<div style="display: flex; width: 5px;">
  <div style="flex: none;">
    <span>XXX XXX XXX</span>
  </div>
</div>

<div style="margin-top: 1em;">You should see three green rectangles above, all on the same line.</div>