when(source1.createInputSplits(Matchers.anyInt())).thenReturn(emptySplits);
when(source2.createInputSplits(Matchers.anyInt())).thenReturn(emptySplits);
when(source1.getInputSplitAssigner(emptySplits)).thenReturn(assigner1);
when(source2.getInputSplitAssigner(emptySplits)).thenReturn(assigner2);
final JobID jobId = new JobID();
final String jobName = "Test Job Sample Name";
final Configuration cfg = new Configuration();
AbstractJobVertex v1 = new AbstractJobVertex("vertex1");
AbstractJobVertex v2 = new AbstractJobVertex("vertex2");