font-variation-settings-inherit.html

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This WPT test may be referenced by the following Test IDs:
- /css/css-fonts/variations/font-variation-settings-inherit.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<html>

<head>

    <title>Testing the inheritance of the font-variation-settings property</title>

    <link rel="help" href="https://www.w3.org/TR/css-fonts-4/#propdef-font-variation-settings" />

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

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

</head>

<body>

    <div id="inheritanceTestParent" style="font-variation-settings: 'xxxx' 1, 'xxxx' 2;">

        <span id="inheritanceTestChildInherited">Abc</span>

        <span id="inheritanceTestChildOverride" style="font-variation-settings: 'cccc' 1, 'bbbb' 2, 'aaaa' 3, 'aaaa' calc(2 + 2);">Abc</span>

    </div>

    <script>

        // Verify computed inheritance of nested elements.

        var elementParent = document.getElementById("inheritanceTestParent");

        var elementChildInherited = document.getElementById("inheritanceTestChildInherited");

        var elementChildOverride = document.getElementById("inheritanceTestChildOverride");

        var parentValue = "'yyyy' 1, 'yyyy' 2";

        elementParent.style.fontVariationSettings = parentValue;

        test(() => {

            var actualValue = window.getComputedStyle(elementParent).fontVariationSettings;

            // The following strict test is subject to debate; softening for now:

            // assert_equals(actualValue, "\"yyyy\" 2", "Duplicate axis tags should be removed, favoring the latter axis tag's value.");

            assert_equals((/.*(?:"|')yyyy(?:"|') (\d)/.exec(actualValue)||[])[1], '2', "Child should override parent value.");

        }, "Test font-variation-settings for duplicates using " + parentValue);

        test(() => {

            var actualValue = window.getComputedStyle(elementChildInherited).fontVariationSettings;

            // The following strict test is subject to debate; softening for now:

            // assert_equals(actualValue, "\"yyyy\" 2", "Child should inherit the parent value directly.");

            assert_equals((/.*(?:"|')yyyy(?:"|') (\d)/.exec(actualValue)||[])[1], '2', "Child should override parent value.");

        }, "Test font-variation-settings for child inheritance");

        test(() => {

            var actualValue = window.getComputedStyle(elementChildOverride).fontVariationSettings;

            // The following strict test is subject to debate; softening for now:

            // assert_equals(actualValue, "\"aaaa\" 4, \"bbbb\" 2, \"cccc\" 1", "Child should override parent value.");

            assert_equals((/.*(?:"|')aaaa(?:"|') (\d)/.exec(actualValue)||[])[1], '4', "Child should override parent value.");

            assert_equals((/.*(?:"|')yyyy(?:"|') (\d)/.exec(actualValue)||[])[1], undefined, "Child should override parent value.");

        }, "Test font-variation-settings for child override");

    </script>

</body>

</html>