CSSGroupingRule-cssRules.html

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This WPT test may be referenced by the following Test IDs:
- /css/cssom/CSSGroupingRule-cssRules.html - WPT Dashboard Interop Dashboard

<!doctype html>

<html>

<head>

    <meta charset="utf-8">

    <title>CSSOM - CSSGroupingRule - cssRules</title>

    <link rel="help" href="https://drafts.csswg.org/cssom/#the-cssgroupingrule-interface">

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

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

    <script>

    function create(t) {

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

        style.appendChild(document.createTextNode('@media all { * {} }'));

        document.head.appendChild(style);

        t.add_cleanup(function() {

            document.head.removeChild(style);

});

        assert_true(!!style.sheet, 'setup - sheet defined');

        assert_equals(

            style.sheet.cssRules.length, 1, 'setup - grouping rule created'

);

        assert_equals(

            style.sheet.cssRules[0].cssRules.length, 1, 'setup - rule created'

);

        return style.sheet.cssRules[0];

    test(function (t) {

        var groupingRule = create(t);

        groupingRule.cssRules.wptMarker = 'wpt';

        // `insertRule` is used to prompt non-conforming implementations to

        // create a new CSSRuleList object. Its behavior is verified by a

        // dedicated test and should not influence the result of this

        // particular test.

        try {

            groupingRule.insertRule('.foo {}', 0);

            groupingRule.insertRule('.bar {}', 0);

            groupingRule.insertRule('.baz {}', 0);

        } catch (err) {}

        assert_equals(groupingRule.cssRules.wptMarker, 'wpt');

        try {

            groupingRule.deleteRule('.foo {}', 0);

            groupingRule.deleteRule('.bar {}', 0);

            groupingRule.deleteRule('.baz {}', 0);

        } catch (err) {}

        assert_equals(groupingRule.cssRules.wptMarker, 'wpt');

    }, '[SameObject] is honored');

    </script>

</head>

</html>