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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>CSS Fonts Module Level 4: Resetting font shorthand subproperties</title>
<link rel="author" title="Munira Tursunova" href="moonira@google.com">
<link rel="help" href="https://drafts.csswg.org/css-fonts/#font-prop">
<meta name="assert" content="All subproperties of the font property are first reset to their initial values.">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<div id="test"></div>
<script>
function set_font_subproperty(property, value) {
const element = document.getElementById('test')
element.style = ''
element.style[property] = value
}
function test_font_shorthand_resetting_subproperty(property, newValue) {
if (!CSS.supports(property, newValue))
return
test(() => {
let testElem = document.getElementById('test');
let computed = window.getComputedStyle(testElem);
let initialValue = computed[property];
set_font_subproperty(property, newValue);
document.getElementById('test').style.font = '16px serif';
assert_equals(computed[property], initialValue);
assert_not_equals(computed.font, "");
}, 'Property ' + property + ' should be reset to its initial value.')
}
test_font_shorthand_resetting_subproperty('font-size-adjust', '0')
test_font_shorthand_resetting_subproperty('font-kerning', 'normal')
test_font_shorthand_resetting_subproperty('font-variant-caps', 'all-small-caps')
test_font_shorthand_resetting_subproperty('font-variant-ligatures', 'none')
test_font_shorthand_resetting_subproperty('font-variant-position', 'sub')
test_font_shorthand_resetting_subproperty('font-variant-numeric', 'ordinal')
test_font_shorthand_resetting_subproperty('font-variant-alternates', 'historical-forms')
test_font_shorthand_resetting_subproperty('font-variant-east-asian', 'full-width')
test_font_shorthand_resetting_subproperty('font-variant-emoji', 'text')
test_font_shorthand_resetting_subproperty('font-feature-settings', '"sinf"')
test_font_shorthand_resetting_subproperty('font-language-override', '"SRB"')
test_font_shorthand_resetting_subproperty('font-optical-sizing', 'none')
test_font_shorthand_resetting_subproperty('font-variation-settings', '"aaaa" 1')
</script>
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