Blitz - WPT: timing-functions-syntax-computed.html

wpt / css / css-easing / timing-functions-syntax-computed.html

Data from commit:
a50cb89 wpt: run reference-named files which are themselves tests (#836) (2026-09-03)

Subtest	Status	Message
Property animation-timing-function value 'linear'	PASS
Property animation-timing-function value 'ease'	PASS
Property animation-timing-function value 'ease-in'	PASS
Property animation-timing-function value 'ease-out'	PASS
Property animation-timing-function value 'ease-in-out'	PASS
Property animation-timing-function value 'cubic-bezier(0.1, 0.2, 0.8, 0.9)'	PASS
Property animation-timing-function value 'cubic-bezier(0, -2, 1, 3)'	PASS
Property animation-timing-function value 'cubic-bezier(0, 0.7, 1, 1.3)'	PASS
Property animation-timing-function value 'cubic-bezier(calc(-2), calc(0.7 / 2), calc(1.5), calc(0))'	FAIL	assert_true: 'cubic-bezier(calc(-2), calc(0.7 / 2), calc(1.5), calc(0))' is a supported value for animation-timing-function. expected true got false
Property animation-timing-function value 'steps(4, start)'	PASS
Property animation-timing-function value 'steps(2, end)'	PASS
Property animation-timing-function value 'steps( 2, end )'	PASS
Property animation-timing-function value 'steps(2, jump-start)'	PASS
Property animation-timing-function value 'steps(2, jump-end)'	PASS
Property animation-timing-function value 'steps(2, jump-both)'	PASS
Property animation-timing-function value 'steps(2, jump-none)'	PASS
Property animation-timing-function value 'steps(calc(-10), start)'	FAIL	assert_equals: expected "steps(1, start)" but got "steps(-10, start)"
Property animation-timing-function value 'steps(calc(5 / 2), start)'	PASS
Property animation-timing-function value 'steps(calc(1), jump-none)'	FAIL	assert_true: 'steps(calc(1), jump-none)' is a supported value for animation-timing-function. expected true got false
Property animation-timing-function value 'linear, ease, linear'	PASS
Property animation-timing-function value 'steps(calc(2 + sign(100em - 1px)), end)'	FAIL	assert_true: 'steps(calc(2 + sign(100em - 1px)), end)' is a supported value for animation-timing-function. expected true got false

Enable JavaScript in test iframe

/css/css-easing/timing-functions-syntax-computed.html

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>CSS Easing: getComputedStyle().animationTimingFunction</title>
<link rel="help" href="https://drafts.csswg.org/css-easing/#timing-functions">
<meta name="assert" content="animation-timing-function computed value is a computed <easing-function> list.">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/css/support/computed-testcommon.js"></script>
</head>
<body>
<div id="target"></div>
<script>
test_computed_value("animation-timing-function", "linear");

test_computed_value("animation-timing-function", "ease");
test_computed_value("animation-timing-function", "ease-in");
test_computed_value("animation-timing-function", "ease-out");
test_computed_value("animation-timing-function", "ease-in-out");
test_computed_value("animation-timing-function", "cubic-bezier(0.1, 0.2, 0.8, 0.9)");
test_computed_value("animation-timing-function", "cubic-bezier(0, -2, 1, 3)");
test_computed_value("animation-timing-function", "cubic-bezier(0, 0.7, 1, 1.3)");
test_computed_value("animation-timing-function", "cubic-bezier(calc(-2), calc(0.7 / 2), calc(1.5), calc(0))", "cubic-bezier(0, 0.35, 1, 0)",);

test_computed_value("animation-timing-function", "steps(4, start)");
test_computed_value("animation-timing-function", "steps(2, end)", "steps(2)");
test_computed_value("animation-timing-function", "steps( 2, end )", "steps(2)");
test_computed_value("animation-timing-function", "steps(2, jump-start)");
test_computed_value("animation-timing-function", "steps(2, jump-end)", "steps(2)");
test_computed_value("animation-timing-function", "steps(2, jump-both)");
test_computed_value("animation-timing-function", "steps(2, jump-none)");
test_computed_value("animation-timing-function", "steps(calc(-10), start)", "steps(1, start)");
test_computed_value("animation-timing-function", "steps(calc(5 / 2), start)", "steps(3, start)");
test_computed_value("animation-timing-function", "steps(calc(1), jump-none)", "steps(2, jump-none)");

test_computed_value("animation-timing-function", "linear, ease, linear");

test_computed_value("animation-timing-function", "steps(calc(2 + sign(100em - 1px)), end)", "steps(3)");
</script>
</body>
</html>