benches/ograph.rs

#![feature(test)]

extern crate petgraph;
extern crate test;

use petgraph::graph::Graph;


#[bench]
fn bench_inser(b: &mut test::Bencher) {
    let mut og = Graph::new();
    let fst = og.add_node(0i32);
    for x in (1..125) {
        let n = og.add_node(x);
        og.add_edge(fst, n, ());
    }
    b.iter(|| {
        og.add_node(1)
    })
}

#[bench]
fn bench_remove(b: &mut test::Bencher) {
    // removal is very slow in a big graph.
    // and this one doesn't even have many nodes.
    let mut og = Graph::new();
    let fst = og.add_node(0i32);
    let mut prev = fst;
    for x in (1..1250) {
        let n = og.add_node(x);
        og.add_edge(prev, n, ());
        prev = n;
    }
    //println!("{}", og);
    b.iter(|| {
        for _ in (0 .. 100) {
            og.remove_node(fst);
        }
    })
}