add another test

src/tests/dom/node.html

@@ -226,7 +226,20 @@ let first_child = content.firstChild.nextSibling; // nextSibling because of line
 </script>
 
 <span id=token class="token" style="color:#ce9178">&quot;puppeteer &quot;</span>
+                                        <h3 id=name>Leto
+                                        <!-- -->
+                                        <!-- -->
+                                        Atreides</h3>
 <script id=normalize>
   const token = $('#token');
-  testing.expectEqual('"puppeteer "', token.firstChild.nodeValue)
+  testing.expectEqual('"puppeteer "', token.firstChild.nodeValue);
+
+  const name = $('#name');
+  testing.expectEqual([
+    "Leto\n                                        ",
+    " ",
+    "\n                                        ",
+    " ",
+    "\n                                        Atreides"
+  ], Array.from(name.childNodes).map((n) => n.nodeValue));
 </script>