Blitz - WPT: at-scope-parsing.html

wpt / css / css-cascade / at-scope-parsing.html

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

Subtest	Status	Message
@scope (.a) is valid	FAIL	cannot convert 'null' or 'undefined' to object
@scope (.a + .b) is valid	FAIL	cannot convert 'null' or 'undefined' to object
@scope (.a:hover) is valid	FAIL	cannot convert 'null' or 'undefined' to object
@scope (.a:hover, #b, div) is valid	FAIL	cannot convert 'null' or 'undefined' to object
@scope (:is(div, span)) is valid	FAIL	cannot convert 'null' or 'undefined' to object
@scope (.a) to (.b) is valid	FAIL	cannot convert 'null' or 'undefined' to object
@scope (.a)to (.b) is valid	FAIL	cannot convert 'null' or 'undefined' to object
@scope (.a) to (.b:hover, #c, div) is valid	FAIL	cannot convert 'null' or 'undefined' to object
@scope is valid	FAIL	cannot convert 'null' or 'undefined' to object
@scope to (.a) is valid	FAIL	cannot convert 'null' or 'undefined' to object
@scope (.a) to (&) is valid	FAIL	cannot convert 'null' or 'undefined' to object
@scope (.a) to (& > &) is valid	FAIL	cannot convert 'null' or 'undefined' to object
@scope (.a) to (> .b) is valid	FAIL	cannot convert 'null' or 'undefined' to object
@scope (.a) to (+ .b) is valid	FAIL	cannot convert 'null' or 'undefined' to object
@scope (.a) to (~ .b) is valid	FAIL	cannot convert 'null' or 'undefined' to object
@scope () is not valid	FAIL	cannot convert 'null' or 'undefined' to object
@scope to () is not valid	FAIL	cannot convert 'null' or 'undefined' to object
@scope () to () is not valid	FAIL	cannot convert 'null' or 'undefined' to object
@scope (.c <> .d) is not valid	FAIL	cannot convert 'null' or 'undefined' to object
@scope (.a, .c <> .d) is not valid	FAIL	cannot convert 'null' or 'undefined' to object
@scope (.a <> .b, .c) is not valid	FAIL	cannot convert 'null' or 'undefined' to object
@scope (div::before) is not valid	FAIL	cannot convert 'null' or 'undefined' to object
@scope (div::after) is not valid	FAIL	cannot convert 'null' or 'undefined' to object
@scope (slotted(div)) is not valid	FAIL	cannot convert 'null' or 'undefined' to object
@scope (.a) to (div::before) is not valid	FAIL	cannot convert 'null' or 'undefined' to object
@scope (> &) to (>>) is not valid	FAIL	cannot convert 'null' or 'undefined' to object
@scope div is not valid	FAIL	cannot convert 'null' or 'undefined' to object
@scope (.a) unknown (.c) is not valid	FAIL	cannot convert 'null' or 'undefined' to object
@scope (.a) to unknown (.c) is not valid	FAIL	cannot convert 'null' or 'undefined' to object
@scope (.a) 1px (.c) is not valid	FAIL	cannot convert 'null' or 'undefined' to object
@scope (.a) to unknown(c) is not valid	FAIL	cannot convert 'null' or 'undefined' to object
@scope unknown(.a) is not valid	FAIL	cannot convert 'null' or 'undefined' to object
@scope 1px is not valid	FAIL	cannot convert 'null' or 'undefined' to object
@scope creep is not valid	FAIL	cannot convert 'null' or 'undefined' to object
@scope ))) is not valid	FAIL	cannot convert 'null' or 'undefined' to object
@scope ( is not valid	FAIL	cannot convert 'null' or 'undefined' to object
@scope ( {} is not valid	FAIL	cannot convert 'null' or 'undefined' to object
@scope to is not valid	FAIL	cannot convert 'null' or 'undefined' to object
@scope } is not valid	FAIL	cannot convert 'null' or 'undefined' to object
@scope (.a is not valid	FAIL	cannot convert 'null' or 'undefined' to object
@scope (.a to (.b) is not valid	FAIL	cannot convert 'null' or 'undefined' to object
@scope ( to (.b) is not valid	FAIL	cannot convert 'null' or 'undefined' to object
@scope (.a) from (.c) is not valid	FAIL	cannot convert 'null' or 'undefined' to object

Enable JavaScript in test iframe

/css/css-cascade/at-scope-parsing.html

<!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');
  test_valid('@scope to (.a)');
  test_valid('@scope (.a) to (&)');
  test_valid('@scope (.a) to (& > &)');
  test_valid('@scope (.a) to (> .b)');
  test_valid('@scope (.a) to (+ .b)');
  test_valid('@scope (.a) to (~ .b)');

  test_invalid('@scope ()');
  test_invalid('@scope to ()');
  test_invalid('@scope () to ()');
  test_invalid('@scope (.c <> .d)');
  test_invalid('@scope (.a, .c <> .d)');
  test_invalid('@scope (.a <> .b, .c)');
  test_invalid('@scope (div::before)');
  test_invalid('@scope (div::after)');
  test_invalid('@scope (slotted(div))');
  test_invalid('@scope (.a) to (div::before)');
  test_invalid('@scope (> &) to (>>)');
  test_invalid('@scope div');
  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');
  test_invalid('@scope )))');
  test_invalid('@scope (');
  test_invalid('@scope ( {}');
  test_invalid('@scope to');
  test_invalid('@scope }');
  test_invalid('@scope (.a');
  test_invalid('@scope (.a to (.b)');
  test_invalid('@scope ( to (.b)');
  test_invalid('@scope (.a) from (.c)');
</script>