.addEqualityGroup(hpNoPort1, hpNoPort2, hpNoPort3, hpNoPort4, hpNoPort5)
        .addEqualityGroup(hpWithPort1, hpWithPort2, hpWithPort3)
        .testEquals();
  }

  public void testRequireBracketsForIPv6() {
    // Bracketed IPv6 works fine.
    assertEquals("::1", HostAndPort.fromString("[::1]").requireBracketsForIPv6().getHost());