@Test
public void should_return_a_valid_character_variant_at_rule_object() {

  StandardAtRule atRule = StandardAtRuleFactory.getByName("character-variant");
  assertEquals(CharacterVariant.class, atRule.getClass());
  assertEquals(atRule.getName(), "character-variant");
  assertEquals(atRule.getLinks().size(), 2);
  assertEquals(atRule.getLinks().get(0), "https://drafts.csswg.org/css-fonts-3/#font-feature-values");
  assertEquals(atRule.getLinks().get(1), "https://developer.mozilla.org/en-US/docs/Web/CSS/@font-feature-values");
  assertEquals(atRule.isObsolete(), false);
  assertEquals(atRule.isExperimental(), true);
}