1 files changed, 30 insertions, 0 deletions
diff --git a/third_party/rust/chrono/benches/serde.rs b/third_party/rust/chrono/benches/serde.rs
new file mode 100644
index 0000000000..860b06e1ae
--- /dev/null
+++ b/third_party/rust/chrono/benches/serde.rs
@@ -0,0 +1,30 @@
+extern crate chrono;
+extern crate criterion;
+
+use criterion::{black_box, criterion_group, criterion_main, Criterion};
+
+use chrono::NaiveDateTime;
+
+fn bench_ser_naivedatetime_string(c: &mut Criterion) {
+    c.bench_function("bench_ser_naivedatetime_string", |b| {
+        let dt: NaiveDateTime = "2000-01-01T00:00:00".parse().unwrap();
+        b.iter(|| {
+            black_box(serde_json::to_string(&dt)).unwrap();
+        });
+    });
+}
+
+fn bench_ser_naivedatetime_writer(c: &mut Criterion) {
+    c.bench_function("bench_ser_naivedatetime_writer", |b| {
+        let mut s: Vec<u8> = Vec::with_capacity(20);
+        let dt: NaiveDateTime = "2000-01-01T00:00:00".parse().unwrap();
+        b.iter(|| {
+            let s = &mut s;
+            s.clear();
+            black_box(serde_json::to_writer(s, &dt)).unwrap();
+        });
+    });
+}
+
+criterion_group!(benches, bench_ser_naivedatetime_writer, bench_ser_naivedatetime_string);
+criterion_main!(benches);