reducer.getBlockOutputs().get(0),
stages.getOutput().getBlockInputs().get(0)), is(true));
assertThat(mapper.getElements().size(), is(1));
FlowElement mapperOp = single(mapper.getElements());
assertThat(mapperOp.getDescription(), is(comp.desc("op1")));
assertThat(reducer.getElements().size(), is(1));
FlowElement reducerOp = single(reducer.getElements());
assertThat(reducerOp.getDescription(), is(comp.desc("op2")));
}