test: Add a raptor-search bench

raptor-search/benches/main.rs

@@ -0,0 +1,31 @@
+#![feature(test)]
+
+extern crate test;
+extern crate fst;
+extern crate raptor;
+
+use std::path::Path;
+use std::{fs, env, io};
+use fst::Streamer;
+use raptor::{load_map, DocIndexMap, RankedStream, LevBuilder};
+
+#[bench]
+fn chauve_souris(b: &mut test::Bencher) {
+    let lev_builder = LevBuilder::new();
+    let map = load_map("map.fst", "values.vecs").unwrap();
+
+    let query = "chauve souris";
+
+    b.iter(|| {
+        let mut automatons = Vec::new();
+        for query in query.split_whitespace() {
+            let lev = lev_builder.build_automaton(query);
+            automatons.push(lev);
+        }
+
+        let mut stream = RankedStream::new(&map, &map.values(), automatons);
+        while let Some(document_id) = stream.next() {
+            test::black_box(document_id);
+        }
+    })
+}