child-indexed-pseudo-class.html

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This WPT test may be referenced by the following Test IDs:
- /css/selectors/child-indexed-pseudo-class.html - WPT Dashboard Interop Dashboard

<!doctype html>

<meta charset=utf-8>

<title>Matching of child-indexed pseudo-classes</title>

<link rel="author" title="Emilio Cobos Álvarez" href="mailto:ecoal95@gmail.com">

<link rel="help" href="https://drafts.csswg.org/selectors-4/#child-index">

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

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

<script>

var check = function(element, selectors, qsRoot) {

  for (var i = 0; i < selectors.length; ++i) {

    var selector = selectors[i][0];

    var expected = selectors[i][1];

    test(function() {

      assert_equals(expected, element.matches(selector));

      if (qsRoot) {

        assert_equals(expected, element === qsRoot.querySelector(selector));

        var qsa = qsRoot.querySelectorAll(selector);

        assert_equals(expected, !!qsa.length && element === qsa[0]);

    }, "Expected " + element.tagName + " element to " +

         (expected ? "match " : "not match ") + selector + " with matches" +

         (qsRoot ? ", querySelector(), and querySelectorAll()" : ""));

var rootOfSubtreeSelectors = [

  [ ":first-child", true ],

  [ ":last-child", true ],

  [ ":only-child", true ],

  [ ":first-of-type", true ],

  [ ":last-of-type", true ],

  [ ":only-of-type", true ],

  [ ":nth-child(1)", true ],

  [ ":nth-child(n)", true ],

  [ ":nth-last-child(1)", true ],

  [ ":nth-last-child(n)", true ],

  [ ":nth-of-type(1)", true ],

  [ ":nth-of-type(n)", true ],

  [ ":nth-last-of-type(1)", true ],

  [ ":nth-last-of-type(n)", true ],

  [ ":nth-child(2)", false ],

  [ ":nth-last-child(2)", false],

  [ ":nth-of-type(2)", false ],

  [ ":nth-last-of-type(2)", false],

];

check(document.documentElement, rootOfSubtreeSelectors, document);

check(document.createElement('div'), rootOfSubtreeSelectors);

var fragment = document.createDocumentFragment();

var div = document.createElement('div');

fragment.appendChild(div);

check(div, rootOfSubtreeSelectors, fragment);

</script>