### Question:
StubFactory { public static Integer rndInt(int lo, int hi) { int ri = rnd.nextInt(); ri = ri < 0 ? 0 - ri : ri; return new Integer(ri % (hi - lo + 1) + lo); }  static Clusters getClustersDetails(); static VirtualIps getVirtualIpsDetails(); static VirtualIpAvailabilityReport retrieveRndVipsAvailabilityReport(); static VirtualIpAvailabilityReport retrieveVipsAvailabilityReport(int id); static VirtualIpAvailabilityReports retrieveRndVipsAvailabilityReports(int max); static VirtualIpAvailabilityReports retrieveVipsAvailabilityReports(int id); static VirtualIp getClusterVirtualIpDetails(int id, int lbid, int cid, String address, IpVersion version, VipType vipType); static Suspension getLoadBalancerSuspensionDetails(String reason, int ticketId, String user); static Backup getLoadbalancerBackupDetails(); static Host getHostDetails(); static VirtualIp getLoadbalancerVirtualIpDetails(int id, int loadBalancerId, int clusterId, String address, VipType vipType); static RateLimit getRateLimitDetails(int ticketId, int maxRequestsPerSecond); static Integer rndInt(int lo, int hi); static Long rndLong(int lo, int hi); static String rndIp(); static Double rndDouble(double lo, double hi); static Object rndChoice(List oList); static Object rndChoice(Object[] oArray); static Backup rndBackup(); static Backups rndBackups(); static HostMachineDetails newHostMachineDetails(); static HostCapacityReport rndHostCapacityReport(); static Host rndHostPut(); static HostCapacityReports rndHostCapacityReports(int max); static Host rndHostPost(); static ConnectionThrottle rndConnectionThrottle(); static LoadBalancerUsageRecord rndCurrentUsage(); static Hosts rndHosts(int max); static Node rndNode(); static Nodes rndNodes(int max); static RateLimit rndRateLimit(); static SessionPersistence rndSessionPersistance(); static LoadBalancer rndLoadBalancer(); static VirtualIpBlock getVirtualIpBlock(String lo, String hi); static VirtualIpBlocks getVirtualIpBlocks(); static NetInterface newNetInterface(String name, String... blocks); static CertInfo newCertInfo(int i, ZonedDateTime notBefore, ZonedDateTime notAfter);  }### Answer:
@Test public void testrndInt() { int ri = StubFactory.rndInt(10, 20); assertTrue("out of range found", (ri <= 20 && ri >= 10)); }