<!doctype html> <title>CSS Container Queries: style() conditionText serialization</title> <link rel="help" href="https://drafts.csswg.org/css-contain-3/#container-queries"> <link rel="help" href="https://drafts.csswg.org/cssom/#serialize-a-css-rule"> <script src="/resources/testharness.js"></script> <script src="/resources/testharnessreport.js"></script> <script src="support/cq-testcommon.js"></script> <style id="testSheet"> @container style( --foo:bar) { } @container STyle(--foo: ) { } @container STyle(--foo:) { } @container STyle(--foo) { } @container style( ( --FOO: BAR) OR ( prop: val ) ) { } @container style (--foo: bar) { } @container style(--foo: bar baz) { } @container style(--foo:2.100 ) { } </style> <script> setup(() => { assert_implements_container_queries(); assert_equals(testSheet.sheet.cssRules.length, 8); }); const tests = [ ["style(--foo: bar)", "Normalize spaces"], ["style(--foo: )", "Empty declaration value - spaces"], ["style(--foo: )", "Empty declaration value"], ["style(--foo)", "No declaration value"], ["style((--FOO: BAR) or ( prop: val ))", "Unknown CSS property after 'or'"], ["style (--foo: bar)", "Not a style function with space before '('"], ["style(--foo: bar baz)", "Spaces preserved in custom property value"], ["style(--foo: 2.100)", "Original string number in custom property value"] ].map((e, i) => [testSheet.sheet.cssRules[i], ...e]); tests.forEach((t) => { test(() => assert_equals(t[0].conditionText, t[1]), t[2]); }); </script>