font-feature-values-sameobject.tentative.html

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This WPT test may be referenced by the following Test IDs:
- /css/css-fonts/font-feature-values-sameobject.tentative.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<title>CSS Fonts Test: CSSFontFeatureValuesRule SameObject test</title>

<link rel="help" href="https://drafts.csswg.org/css-fonts/#om-fontfeaturevalues">

<link rel="help" href="https://github.com/w3c/csswg-drafts/issues/13953">

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

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

<style id="style">

  @font-feature-values TestFont {

    @annotation { a: 1; }

    @ornaments { b: 2; }

    @stylistic { c: 3; }

    @swash { d: 4; }

    @character-variant { e: 5; }

    @styleset { f: 6; }

</style>

<script>

  test(() => {

    const style = document.getElementById('style');

    const rule = style.sheet.cssRules[0];

    assert_true(rule instanceof CSSFontFeatureValuesRule, "Should be CSSFontFeatureValuesRule");

    const attributes = [

      'annotation',

      'ornaments',

      'stylistic',

      'swash',

      'characterVariant',

      'styleset'

];

    for (const attr of attributes) {

      const map1 = rule[attr];

      const map2 = rule[attr];

      assert_equals(map1, map2, `${attr} should return the same object`);

  }, "CSSFontFeatureValuesMap attributes in CSSFontFeatureValuesRule should be [SameObject]");

</script>