cogroup1.setSuccessors(Lists.newArrayList("out"));
expectedOps.add(cogroup1);
// Add all expected P2jLOLimit objects
P2jLOLimit limit1 = new P2jLOLimit();
limit1.setAlias("out");
limit1.setPredecessors(Lists.newArrayList("tiny_colors_cogrp"));
limit1.setSuccessors(Lists.newArrayList("file://" + System.getProperty("user.dir") + "/test_out_cogrp"));
expectedOps.add(limit1);
// For each op, ensure the aliases and all predecessors/successors match
for (String scope : plan.getPlan().keySet()) {