| <!doctype html> |
| <title>@starting-style: parsing</title> |
| <link rel="help" href="https://drafts.csswg.org/css-transitions-2/#at-ruledef-starting-style"> |
| <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('@starting-style'); |
| |
| test_invalid('@starting-style div'); |
| test_invalid('@starting-style ()'); |
| test_invalid('@starting-style ( {}'); |
| test_invalid('@starting-style }'); |
| </script> |
