List<Address> members1 = new ArrayList<Address>();
List<Address> members2 = new ArrayList<Address>();
members1.add(A);
members2.add(A);
members2.add(B);
ReplicatedConsistentHash readCh = new ReplicatedConsistentHash(members1);
ReplicatedConsistentHash writeCh = new ReplicatedConsistentHash(members2);
final CacheTopology cacheTopology = new CacheTopology(1, readCh, writeCh);
when(stateTransferManager.getCacheTopology()).thenAnswer(new Answer<CacheTopology>() {
@Override
public CacheTopology answer(InvocationOnMock invocation) {
return cacheTopology;