DQPCore core = Mockito.mock(DQPCore.class);
RequestWorkItem rwi = Mockito.mock(RequestWorkItem.class);
DQPWorkContext workContext = new DQPWorkContext();
VDBMetaData vdb = new VDBMetaData();
vdb.addAttchment(TransformationMetadata.class, metadata);
workContext.getSession().setVdb(vdb);
Mockito.stub(rwi.getDqpWorkContext()).toReturn(workContext);
Mockito.stub(core.getRequestWorkItem((RequestID)Mockito.anyObject())).toReturn(rwi);
DataTierManagerImpl dataMgr = new DataTierManagerImpl(core, null, true);