attr-universal-selector.html

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This test has a WPT meta file that expects 1 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /css/css-values/attr-universal-selector.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<title>CSS Values and Units Test: attr() security limitations in universal selector </title>

<link rel="help" href="https://drafts.csswg.org/css-values-5/#attr-security">

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

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

<style>

  @property --some-string {

    syntax: "<string>";

    inherits: true;

    initial-value: "empty";

* {

    --some-string: "https://does-not-exist.test/404.png";

  div {

    --some-string: attr(data-foo);

    background-image: image-set(var(--some-string));

</style>

<html>

  <body>

    <div id="attr" data-foo="https://does-not-exist.test/404.png"></div>

  </body>

</html>

<script>

    var elem = document.getElementById("attr");

    test(() => {

        assert_equals(window.getComputedStyle(elem).getPropertyValue('background-image'),

                    'none',

                    "'background-image: attr(data-foo)' with data-foo='https://does-not-exist.test/404.png'");

});

</script>