wpt / css / css-backgrounds / parsing / background-size-valid.html

Status: PASS | Duration: 116ms | Subtests: 9/9 | Open test on wpt.live | wpt.fyi

TestTest SourceSubtests (9/9)

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

SubtestStatusMessage
e.style['background-size'] = "1px" should set the property valuePASS
e.style['background-size'] = "1px auto" should set the property valuePASS
e.style['background-size'] = "2% 3%" should set the property valuePASS
e.style['background-size'] = "auto" should set the property valuePASS
e.style['background-size'] = "auto auto" should set the property valuePASS
e.style['background-size'] = "auto 4%" should set the property valuePASS
e.style['background-size'] = "contain" should set the property valuePASS
e.style['background-size'] = "cover" should set the property valuePASS
e.style['background-size'] = "auto 1px, 2% 3%, contain" should set the property valuePASS

/css/css-backgrounds/parsing/background-size-valid.html

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>CSS Backgrounds and Borders Module Level 3: parsing background-size with valid values</title>
<link rel="author" title="Eric Willigers" href="mailto:ericwilligers@chromium.org">
<link rel="help" href="https://drafts.csswg.org/css-backgrounds/#background-size">
<meta name="assert" content="background-size supports the full grammar '<bg-size>#'.">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/css/support/parsing-testcommon.js"></script>
</head>
<body>
<script>
test_valid_value("background-size", "1px", "1px auto");
test_valid_value("background-size", "1px auto", "1px auto");
test_valid_value("background-size", "2% 3%");
test_valid_value("background-size", "auto");
test_valid_value("background-size", "auto auto", "auto");
test_valid_value("background-size", "auto 4%");
test_valid_value("background-size", "contain");
test_valid_value("background-size", "cover");

test_valid_value("background-size", "auto 1px, 2% 3%, contain");
</script>
</body>
</html>