chromium/third_party/blink/web_tests/external/wpt/css/css-text/white-space/white-space-vs-joiners-002.html

<!DOCTYPE html>
<meta charset=utf-8>

<title>CSS Text Test: join controls do not disrupt white-space processing</title>
<link rel="author" title="Jonathan Kew" href="mailto:[email protected]">
<link rel="help" href="https://drafts.csswg.org/css-text-3/#white-space-rules">
<!-- NB: The spec doesn't explicitly discuss join controls in this context,
     but it is self-evident that they should not have any effect on the white-space processing.
     Their only effect should be on the shaping (if any) of the adjacent characters. -->
<link rel="match" href="reference/white-space-vs-joiners-002-ref.html">
<meta name="assert" content="The presence of join controls (ZWJ/ZWNJ) at word edges should not affect white-space processing">

<style>
p {
  width: min-content;
  border: 2px solid green;
  font: 24px monospace;
}
</style>

<body>
  <p>
    &#x200d;This&#x200d;
    &#x200d;is&#x200d;
    &#x200d;a&#x200d;
    &#x200d;simple&#x200d;
    &#x200d;test&#x200d;
  </p>
</body>