add basic auth bench

lib/komainu/Cargo.toml

@@ -5,6 +5,10 @@ edition.workspace = true
 version.workspace = true
 license = "MIT OR Apache-2.0"
 
+[[bench]]
+name = "basic_auth"
+harness = false
+
 [[bench]]
 name = "pkce"
 harness = false

lib/komainu/benches/basic_auth.rs

@@ -0,0 +1,21 @@
+use divan::{black_box, black_box_drop};
+use komainu::extractor::BasicAuth;
+
+#[divan::bench]
+fn rfc_value(b: divan::Bencher<'_, '_>) {
+    let mut map = http::HeaderMap::new();
+    map.insert(
+        http::header::AUTHORIZATION,
+        http::HeaderValue::from_static("Basic QWxhZGRpbjpvcGVuIHNlc2FtZQ=="),
+    );
+
+    b.bench(|| {
+        let auth = BasicAuth::extract(black_box(&map)).unwrap();
+        black_box_drop((auth.username(), auth.password()));
+        auth
+    });
+}
+
+fn main() {
+    divan::main();
+}