page-descriptors.html

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

<!DOCTYPE HTML>

<html>

<head>

  <link rel="author" title="Mozilla" href="https://mozilla.org">

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

  <title>Page descriptors shouldn't be exposed to CSS Style declarations</title>

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

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

</head>

<body>

<div id="target"></div>

<script>

'use strict';

let element = document.getElementById("target");

let computedStyle = window.getComputedStyle(element);

let style = element.style;

test(t => {

    assert_equals(computedStyle.size, undefined,

        "computed style should not have size property");

    assert_equals(computedStyle.getPropertyValue("size"), "",

        "computed style getPropertyValue(\"size\") should be empty");

    assert_equals(style.size, undefined,

        "style should not have size property");

    assert_equals(style.getPropertyValue("size"), "",

        "style getPropertyValue(\"size\") should be empty");

    for(const val of ["initial", "auto", "100px"]){

        style.setProperty("size", val);

        assert_false(CSS.supports("size", val));

        assert_equals(style.size, undefined,

            "style should not have size property after assigning size=" + val);

        assert_equals(style.getPropertyValue("size"), "",

            "style getPropertyValue(\"size\") should be empty after assigning size=" + val);

});

</script>

</body>

</html>