html/webappapis/dynamic-markup-insertion/html-unsafe-methods/Document-parseHTMLUnsafe-encoding.tentative.html

<!DOCTYPE html>
<meta charset="windows-1252"> <!-- intentional to make sure the results are UTF-8 anyway -->
<link rel=author href="mailto:jarhar@chromium.org">
<link rel=help href="https://github.com/whatwg/html/pull/9538">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>

<!-- This was adapted from DOMParser-parseFromString-encoding.html -->

<script>
function assertEncoding(doc) {
  assert_equals(doc.charset, "UTF-8", "document.charset");
  assert_equals(doc.characterSet, "UTF-8", "document.characterSet");
  assert_equals(doc.inputEncoding, "UTF-8", "document.characterSet");
}

setup(() => {
  assert_equals(document.characterSet, "windows-1252", "the meta charset must be in effect, making the main document windows-1252");
});

test(() => {
  const doc = Document.parseHTMLUnsafe('');
  assertEncoding(doc);
}, 'Parse empty string');

test(() => {
  const doc = Document.parseHTMLUnsafe(`<meta charset="latin2">`);
  assertEncoding(doc);
}, "meta charset latin2");

test(() => {
  const doc = Document.parseHTMLUnsafe(`<?xml version="1.0" encoding="latin2"?><x/>`);
  assertEncoding(doc);
}, "XML declaration");
</script>