has-argument-with-explicit-scope.html

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This WPT test may be referenced by the following Test IDs:
- /css/selectors/has-argument-with-explicit-scope.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<meta charset="utf-8">

<title>:has pseudo class behavior with explicit ':scope' in its argument</title>

<link rel="author" title="Byungwoo Lee" href="mailto:blee@igalia.com">

<link rel="help" href="https://drafts.csswg.org/selectors/#relational">

<script src="/resources/testharness.js"></script>

<script src="/resources/testharnessreport.js"></script>

<main>

 <div id=d01 class="a">

  <div id=scope1 class="b">

    <div id=d02 class="c">

      <div id=d03 class="c">

        <div id=d04 class="d"></div>

      </div>

    </div>

    <div id=d05 class="e"></div>

  </div>

 </div>

 <div id=d06>

  <div id=scope2 class="b">

    <div id=d07 class="c">

      <div id=d08 class="c">

        <div id=d09></div>

      </div>

    </div>

  </div>

 </div>

</div>

<script>

  function formatElements(elements) {

    return elements.map(e => e.id).sort().join();

  // Test that |selector| returns the given elements in the given scope element

  function test_selector_all(scope, selector, expected) {

    test(function() {

      let actual = Array.from(scope.querySelectorAll(selector));

      assert_equals(formatElements(actual), formatElements(expected));

    }, `${selector} matches expected elements on ${scope.id}`);

  // Test that |selector1| and |selector2| returns same elements in the given scope element

  function compare_selector_all(scope, selector1, selector2) {

    test(function() {

      let result1 = Array.from(scope.querySelectorAll(selector1));

      let result2 = Array.from(scope.querySelectorAll(selector2));

      assert_equals(formatElements(result1), formatElements(result2));

    }, `${selector1} and ${selector2} returns same elements on ${scope.id}`);

  // descendants of a scope element cannot have the scope element as its descendant

  test_selector_all(scope1, ':has(:scope)', []);

  test_selector_all(scope1, ':has(:scope .c)', []);

  test_selector_all(scope1, ':has(.a :scope)', []);

  // there can be more simple and efficient alternative for a ':scope' in ':has'

  test_selector_all(scope1, '.a:has(:scope) .c', [d02, d03]);

  compare_selector_all(scope1, '.a:has(:scope) .c', ':is(.a :scope .c)');

  test_selector_all(scope2, '.a:has(:scope) .c', []);

  compare_selector_all(scope2, '.a:has(:scope) .c', ':is(.a :scope .c)');

  test_selector_all(scope1, '.c:has(:is(:scope .d))', [d02, d03]);

  compare_selector_all(scope1, '.c:has(:is(:scope .d))', ':scope .c:has(.d)');

  compare_selector_all(scope1, '.c:has(:is(:scope .d))', '.c:has(.d)');

  test_selector_all(scope2, '.c:has(:is(:scope .d))', []);

  compare_selector_all(scope2, '.c:has(:is(:scope .d))', ':scope .c:has(.d)');

  compare_selector_all(scope2, '.c:has(:is(:scope .d))', '.c:has(.d)');

</script>