@Test
public void should_return_a_valid_has_pseudo_function_object() {

  StandardPseudoFunction function = StandardPseudoFunctionFactory.getByName("has");
  assertEquals(Has.class, function.getClass());
  assertEquals(function.getName(), "has");
  assertEquals(function.getLinks().size(), 1);
  assertEquals(function.getLinks().get(0), "https://drafts.csswg.org/selectors-4/#overview");
  assertEquals(function.isExperimental(), true);
  assertEquals(function.isObsolete(), false);
}