test test_circular_graph ... ignored
test test_line_graph ... ignored
test test_simple ... ignored
test bench_erdos_renyi_graph ... bench: 91,326,306 ns/iter (+/- 915,342)
test bench_erdos_renyi_graph_opt_dense ... bench: 5,982,656 ns/iter (+/- 224,287)
test bench_erdos_renyi_graph_opt_sparse ... bench: 25,457,006 ns/iter (+/- 556,136)