Arguments.of(NbtException.SUCCESS, 0, "SUCCESS"),

                // ERR_NAM_SRVC
                // Note: FMT_ERR case has a bug in NbtException.getErrorString() - missing break statement causes fallthrough
                Arguments.of(NbtException.ERR_NAM_SRVC, NbtException.FMT_ERR, "ERR_NAM_SRVC/FMT_ERR: Format ErrorUnknown error code: 1"),

        case SUCCESS:
            result.append("SUCCESS");
            break;
        case ERR_NAM_SRVC:
            result.append("ERR_NAM_SRVC/");
            switch (errorCode) {
            case FMT_ERR:
                result.append("FMT_ERR: Format Error");
            default:
                result.append("Unknown error code: ").append(errorCode);
            }
            break;
        case ERR_SSN_SRVC:

        case SUCCESS:
            result.append("SUCCESS");
            break;
        case ERR_NAM_SRVC:
            result.append("ERR_NAM_SRVC/");
            switch (errorCode) {
            case FMT_ERR:
                result.append("FMT_ERR: Format Error");
            default:
                result.append("Unknown error code: ").append(errorCode);
            }
            break;
        case ERR_SSN_SRVC:

    @Test
    @DisplayName("getErrorString for name service error with known code")
    void testNameServiceKnown() {
        String expected = "ERR_NAM_SRVC/FMT_ERR: Format ErrorUnknown error code: 1";
        assertEquals(expected, NbtException.getErrorString(NbtException.ERR_NAM_SRVC, NbtException.FMT_ERR));
    }

    @Test
    @DisplayName("getErrorString for name service error with unknown code")
    void testNameServiceUnknown() {

        packet.isTruncated = true;
        packet.isRecurDesired = true;
        packet.isRecurAvailable = true;
        packet.isBroadcast = true;
        packet.resultCode = NameServicePacket.FMT_ERR;
        packet.questionCount = 1;
        packet.answerCount = 2;
        packet.authorityCount = 3;
        packet.additionalCount = 4;

        int written = packet.writeHeaderWireFormat(dst, 0);

        case QUERY -> "QUERY";
        case WACK -> "WACK";
        default -> Integer.toString(this.opCode);
        };
        resultCodeString = switch (this.resultCode) {
        case FMT_ERR -> "FMT_ERR";
        case SRV_ERR -> "SRV_ERR";
        case IMP_ERR -> "IMP_ERR";
        case RFS_ERR -> "RFS_ERR";
        case ACT_ERR -> "ACT_ERR";
        case CFT_ERR -> "CFT_ERR";

        case QUERY -> "QUERY";
        case WACK -> "WACK";
        default -> Integer.toString(opCode);
        };
        resultCodeString = switch (resultCode) {
        case FMT_ERR -> "FMT_ERR";
        case SRV_ERR -> "SRV_ERR";
        case IMP_ERR -> "IMP_ERR";
        case RFS_ERR -> "RFS_ERR";
        case ACT_ERR -> "ACT_ERR";
        case CFT_ERR -> "CFT_ERR";