@Test
public void compaction_deadOut() {
FlowGraphGenerator gen = new FlowGraphGenerator();
gen.defineInput("in1");
gen.defineInput("in2");
gen.defineOperator("op1", "in1 in2", "out1 out2");
gen.defineOutput("out1");
gen.defineOutput("out2");
gen.connect("in1", "op1.in1").connect("op1.out1", "out1");
gen.connect("in2", "op1.in2").connect("op1.out2", "out2");
FlowBlock bin = FlowBlock.fromPorts(