def alias(key):
    key = key.lower()
    return aliases.get(key, key)
Should return nodes when role is present in the expanded run_list
dataset/ETHPy150Open blaze/odo/odo/backends/csv.py/alias--crossover with--dataset/ETHPy150Open tobami/littlechef/tests/test_lib.py/TestLib.test_nodes_with_role_expanded