@Test
	public void testRoundRobin(){
		Set<String> servers = new HashSet<String>(); 
		for (int i=0; i < 100; i++){
			Server svc = lb.chooseServer("user1");
			servers.add(svc.getId());
		}
		assertEquals(isAliveMap.keySet(), servers);
	}
Simulate a single user who should just round robin among the available servers
ribbon-loadbalancer/src/test/java/com/netflix/loadbalancer/RandomLBTest.java