Set<ServiceComponentHostRequest> setRequests = new HashSet<ServiceComponentHostRequest>();
setRequests.add(request1);
// expectations
// constructor init
injector.injectMembers(capture(controllerCapture));
expect(injector.getInstance(Gson.class)).andReturn(null);
// getHostComponent
expect(clusters.getCluster("cluster1")).andReturn(cluster);
expect(clusters.getClustersForHost("host1")).andReturn(Collections.singleton(cluster));