css/css-values/exp-log-serialize.html

<!DOCTYPE html>
<link rel="help" href="https://drafts.csswg.org/css-values-4/#exponent-funcs">
<link rel="help" href="https://drafts.csswg.org/css-values-4/#numbers">
<link rel="help" href="https://drafts.csswg.org/css-values-4/#calc-serialize">
<link rel="author" title="Apple Inc">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="../support/serialize-testcommon.js"></script>
<div id=target></div>
<script>
function test_serialization(t,s,c) {
    test_specified_serialization('opacity', t, s);
    test_specified_serialization('transform', `scale(${t})`, `scale(${s})`);
    test_computed_serialization('opacity', t, c);
    test_computed_serialization('transform', `scale(${t})`, `matrix(${c}, 0, 0, ${c}, 0, 0)`);
}

test_serialization(
    'exp(0)',
    'calc(1)',
    '1');
test_serialization(
    'log(1)',
    'calc(0)',
    '0');

test_serialization(
    'calc(exp(0) + log(1) + log(1))',
    'calc(1)',
    '1');

test_serialization(
    'calc(log(1) + 0.5)',
    'calc(0.5)',
    '0.5');

const t = 'calc(log(0))';
const s = 'calc(-infinity)';
const c = '0';
test_specified_serialization('opacity', t, s);
test_specified_serialization('transform', `scale(${t})`, `scale(${s})`);
test_computed_serialization('opacity', t, c);
</script>