domparsing/Comment-serialization-double-hyphen.html

<!DOCTYPE html>
<title>Serialization of comments containing '--'</title>
<meta charset="utf-8">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<!-- Regression test for https://github.com/jsdom/jsdom/issues/243 -->

<script>
"use strict";

test(() => {
  const p = document.createElement("p");
  const comment = document.createComment("abc--def");
  p.appendChild(comment);
  assert_equals(p.innerHTML, "<!--abc--def-->");
}, "Serializing a comment containing '--' via innerHTML");

// Test case based on the original report's example
test(() => {
  const p = document.createElement("p");
  const comment = document.createComment("abc-->def<!--ghj");
  p.appendChild(comment);
  assert_equals(p.innerHTML, "<!--abc-->def<!--ghj-->");
}, "Serializing a comment containing '-->' via innerHTML");

// Test case based on the comment discussion
test(() => {
  const p = document.createElement("p");
  const comment = document.createComment("--");
  p.appendChild(comment);
  assert_equals(p.innerHTML, "<!------>");
}, "Serializing a comment containing only '--' via innerHTML");

</script>