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#![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_add_edge(b: &mut test::Bencher) {
let mut og = Graph::new();
for _ in 0..100 {
og.add_node(());
}
b.iter(|| {
for (a, b) in og.node_indices().zip(og.node_indices().skip(1)) {
og.add_edge(a, b, ());
}
og.clear_edges();
})
}
#[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);
}
})
}
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