| <!doctype html> |
| <title>@scope: parsing</title> |
| <link rel="help" href="https://drafts.csswg.org/css-cascade-6/#scope-atrule"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <main id=main></main> |
| <script> |
| function test_valid(actual, expected) { |
| if (expected === undefined) |
| expected = actual; |
| test(t => { |
| t.add_cleanup(() => main.replaceChildren()); |
| let style = document.createElement('style'); |
| style.textContent = `${actual}{}`; |
| main.append(style); |
| assert_equals(style.sheet.rules.length, 1); |
| let rule = style.sheet.rules[0]; |
| assert_equals(rule.cssText, `${expected} {\n}`); |
| }, `${actual} is valid`); |
| } |
| |
| function test_invalid(actual) { |
| test(t => { |
| t.add_cleanup(() => main.replaceChildren()); |
| let style = document.createElement('style'); |
| style.textContent = `${actual}{}`; |
| main.append(style); |
| assert_equals(style.sheet.rules.length, 0); |
| }, `${actual} is not valid`); |
| } |
| |
| test_valid('@scope (.a)'); |
| test_valid('@scope (.a + .b)'); |
| test_valid('@scope (.a:hover)'); |
| test_valid('@scope (.a:hover, #b, div)'); |
| test_valid('@scope (:is(div, span))'); |
| |
| test_valid('@scope (.a) to (.b)'); |
| test_valid('@scope (.a)to (.b)', '@scope (.a) to (.b)'); |
| test_valid('@scope (.a) to (.b:hover, #c, div)'); |
| test_valid('@scope'); |
| |
| // Forgiving behavior: |
| test_valid('@scope (.c <> .d)', '@scope ()'); |
| test_valid('@scope (.a, .c <> .d)', '@scope (.a)'); |
| test_valid('@scope (.a <> .b, .c)', '@scope (.c)'); |
| test_valid('@scope (div::before)', '@scope ()'); |
| test_valid('@scope (div::after)', '@scope ()'); |
| test_valid('@scope (slotted(div))', '@scope ()'); |
| test_valid('@scope (.a) to (div::before)', '@scope (.a)'); |
| |
| test_invalid('@scope (.a) unknown (.c)'); |
| test_invalid('@scope (.a) to unknown (.c)'); |
| test_invalid('@scope (.a) 1px (.c)'); |
| test_invalid('@scope (.a) to unknown(c)'); |
| test_invalid('@scope unknown(.a)'); |
| test_invalid('@scope 1px'); |
| test_invalid('@scope creep'); |
| </script> |
