def test_NetworkXMetrics_outputs():
    output_map = dict(edge_measure_networks=dict(),
    edge_measures_matlab=dict(),
    global_measures_matlab=dict(),
    gpickled_network_files=dict(),
    k_core=dict(),
    k_crust=dict(),
    k_networks=dict(),
    k_shell=dict(),
    matlab_dict_measures=dict(),
    matlab_matrix_files=dict(),
    node_measure_networks=dict(),
    node_measures_matlab=dict(),
    pickled_extra_measures=dict(),
    )
    outputs = NetworkXMetrics.output_spec()

    for key, metadata in output_map.items():
        for metakey, value in metadata.items():
            yield assert_equal, getattr(outputs.traits()[key], metakey), value