Ex1 ex1 = new Ex1();
ex1.setSid(1);
ex1.setValue(10);
in.add(ex1);
FlowDescription flow = new NoShuffleStage(in.flow(), out.flow());
assertThat(tester.runFlow(flow), is(true));
List<Ex1> list = out.toList();
assertThat(list.size(), is(1));
assertThat(list.get(0).getValue(), is(100));