font-shorthand-serialization-001.html

<!doctype html>
<meta charset="utf-8">
<title>CSS Test: font shorthand serialization</title>
<link rel="author" title="Emilio Cobos Álvarez" href="mailto:[email protected]">
<link rel="help" href="https://drafts.csswg.org/css-fonts-4/#propdef-font">
<link rel="help" href="https://drafts.csswg.org/cssom/">
<link rel="help" href="https://github.com/w3c/csswg-drafts/issues/1564">
<link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1436031">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<div style="font: bold medium serif"></div>
<script>
test(function() {
  assert_equals(
    document.querySelector('div').style.font, "bold medium serif",
    "Default values of the longhands don't get serialized on the font shorthand"
  );
}, "Default values of the longhands don't get serialized on the font shorthand");
</script>

chromium/third_party/blink/web_tests/external/wpt/css/css-fonts/font-shorthand-serialization-001.html