css/css-fonts/inheritance.html

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Inheritance of CSS Fonts Level 3 properties</title>
<link rel="help" href="https://www.w3.org/TR/css-fonts-3/#property-index">
<link rel="help" href="https://www.w3.org/TR/css-fonts-4/#property-index">
<meta name="assert" content="Properties inherit according to the spec.">
<meta name="assert" content="Properties have initial values according to the spec.">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/css/support/inheritance-testcommon.js"></script>
<style>
  #box {
    font-size: medium;
  }
</style>
</head>
<body>
<div id="box"></div>
<div id="container">
  <div id="target"></div>
</div>
<script>
'use strict';
const box = document.getElementById('box');
const mediumFontSize = getComputedStyle(box).fontSize;

assert_inherited('font-family', null, '"Not Initial!"');  // Initial value depends on user agent.
assert_inherited('font-feature-settings', 'normal', '"smcp", "swsh" 2');
assert_inherited('font-kerning', 'auto', 'none');
assert_inherited('font-language-override', 'normal' , '"ksw"');
assert_inherited('font-optical-sizing', 'auto' , 'none');
assert_inherited('font-size', mediumFontSize /* medium */, '123px');
assert_inherited('font-size-adjust', 'none', '1.5');
assert_inherited('font-stretch', '100%' /* normal */, '75%');
assert_inherited('font-style', 'normal', 'italic');
assert_inherited('font-synthesis', 'weight style small-caps', 'none');
assert_inherited('font-variant', 'normal', 'none');
assert_inherited('font-variant-alternates', 'normal', 'historical-forms');
assert_inherited('font-variant-caps', 'normal', 'small-caps');
assert_inherited('font-variant-east-asian', 'normal', 'ruby');
assert_inherited('font-variant-ligatures', 'normal', 'none');
assert_inherited('font-variant-numeric', 'normal', 'ordinal');
assert_inherited('font-variant-position', 'normal', 'super');
assert_inherited('font-variation-settings', 'normal', '"wght" 700');
assert_inherited('font-weight', '400' /* normal */, '900');
</script>
</body>
</html>