Use bencher instead of unstable libtest

Cargo.toml

@@ -56,7 +56,6 @@ series = ["vtab"]
 # check for invalid query.
 extra_check = []
 modern_sqlite = ["libsqlite3-sys/bundled_bindings"]
-unstable = []
 in_gecko = ["modern_sqlite", "libsqlite3-sys/in_gecko"]
 bundled-windows = ["libsqlite3-sys/bundled-windows"]
 
@@ -82,6 +81,9 @@ lazy_static = "1.0"
 regex = "1.0"
 uuid = { version = "0.8", features = ["v4"] }
 unicase = "2.4.0"
+# Use `bencher` over criterion becasue it builds much faster and we don't have
+# many benchmarks
+bencher = "0.1"
 
 [dependencies.libsqlite3-sys]
 path = "libsqlite3-sys"
@@ -97,6 +99,10 @@ name = "deny_single_threaded_sqlite_config"
 [[test]]
 name = "vtab"
 
+[[bench]]
+name = "cache"
+harness = false
+
 [package.metadata.docs.rs]
 features = [ "backup", "blob", "chrono", "collation", "functions", "limits", "load_extension", "serde_json", "trace", "url", "vtab", "window", "modern_sqlite" ]
 all-features = false

benches/cache.rs

@@ -0,0 +1,18 @@
+use bencher::{benchmark_group, benchmark_main, Bencher};
+use rusqlite::Connection;
+
+fn bench_no_cache(b: &mut Bencher) {
+    let db = Connection::open_in_memory().unwrap();
+    db.set_prepared_statement_cache_capacity(0);
+    let sql = "SELECT 1, 'test', 3.14 UNION SELECT 2, 'exp', 2.71";
+    b.iter(|| db.prepare(sql).unwrap());
+}
+
+fn bench_cache(b: &mut Bencher) {
+    let db = Connection::open_in_memory().unwrap();
+    let sql = "SELECT 1, 'test', 3.14 UNION SELECT 2, 'exp', 2.71";
+    b.iter(|| db.prepare_cached(sql).unwrap());
+}
+
+benchmark_group!(cache_benches, bench_no_cache, bench_cache);
+benchmark_main!(cache_benches);

benches/lib.rs

@@ -1,24 +0,0 @@
-#![cfg_attr(feature = "unstable", feature(test))]
-
-#[cfg(feature = "unstable")]
-mod bench {
-    extern crate test;
-
-    use rusqlite::Connection;
-    use test::Bencher;
-
-    #[bench]
-    fn bench_no_cache(b: &mut Bencher) {
-        let db = Connection::open_in_memory().unwrap();
-        db.set_prepared_statement_cache_capacity(0);
-        let sql = "SELECT 1, 'test', 3.14 UNION SELECT 2, 'exp', 2.71";
-        b.iter(|| db.prepare(sql).unwrap());
-    }
-
-    #[bench]
-    fn bench_cache(b: &mut Bencher) {
-        let db = Connection::open_in_memory().unwrap();
-        let sql = "SELECT 1, 'test', 3.14 UNION SELECT 2, 'exp', 2.71";
-        b.iter(|| db.prepare_cached(sql).unwrap());
-    }
-}