for (String domain : badCookieDomains) {
      assertThrows(
          IllegalStateException.class, () -> InternetDomainName.from(domain).topPrivateDomain());
    }
  }

  public void testIsValid() {
    Iterable<String> validCases = Iterables.concat(VALID_NAME, PS, NO_PS, NON_PS);
    Iterable<String> invalidCases =
        Iterables.concat(INVALID_NAME, VALID_IP_ADDRS, INVALID_IP_ADDRS);