### Question:
Pcaps { public static String libVersion() { return NativeMappings.pcap_lib_version(); } private  Pcaps(); static List<PcapNetworkInterface> findAllDevs(); static PcapNetworkInterface getDevByAddress(
    InetAddress addr
  ); static PcapNetworkInterface getDevByName(
    String name
  ); static String lookupDev(); static Inet4NetworkAddress lookupNet(
    String devName
  ); static PcapHandle openOffline(
    String filePath
  ); static PcapHandle openOffline(
    String filePath, TimestampPrecision precision
  ); static PcapHandle openDead(
    DataLinkType dlt, int snaplen
  ); static PcapHandle openDead(
    DataLinkType dlt, int snaplen, TimestampPrecision precision
  ); static BpfProgram compileFilter(
    int snaplen, DataLinkType dlt, String bpfExpression,
    BpfCompileMode mode, Inet4Address netmask
  ); static DataLinkType dataLinkNameToVal(
    String name
  ); static String dataLinkTypeToName(
    DataLinkType dlt
  ); static String dataLinkValToName(
    int dataLinkVal
  ); static String dataLinkTypeToDescription(
    DataLinkType dlt
  ); static String dataLinkValToDescription(
    int dataLinkVal
  ); static String strError(int error); static String libVersion(); static String toBpfString(InetAddress inetAddr); static String toBpfString(MacAddress macAddr);  }### Answer:
@Test public void testLibVersion() throws Exception { String ver = Pcaps.libVersion(); logger.info("ver: " + ver); assertNotNull(ver); assertFalse(ver.length() == 0); }