#[tokio::test]
#[serial]
async fn multiwriter_same_keys_conflict() {
let node_id = Uuid::parse_str("96ebbb5c-8040-497a-9459-838e4931aca7").unwrap();
let clock = Arc::new(RwLock::new(SizedClock::Fake(FakeClock::new(Timestamp::default()))));
let (ds, _) = new_ds(node_id, clock).await;
let mut tx = ds.transaction(Write, Optimistic).await.unwrap();
tx.set("test", "some text").await.unwrap();
tx.commit().await.unwrap();
let mut tx1 = ds.transaction(Write, Optimistic).await.unwrap();
tx1.set("test", "other text 1").await.unwrap();
let mut tx2 = ds.transaction(Write, Optimistic).await.unwrap();
tx2.set("test", "other text 2").await.unwrap();
let mut tx3 = ds.transaction(Write, Optimistic).await.unwrap();
tx3.set("test", "other text 3").await.unwrap();
assert!(tx1.commit().await.is_ok());
assert!(tx2.commit().await.is_err());
assert!(tx3.commit().await.is_err());
let mut tx = ds.transaction(Read, Optimistic).await.unwrap();
let val = tx.get("test").await.unwrap().unwrap();
assert_eq!(val, b"other text 1");
tx.cancel().await.unwrap();
let mut tx = ds.transaction(Write, Optimistic).await.unwrap();
tx.set("test", "original text").await.unwrap();
tx.commit().await.unwrap();
let mut tx = ds.transaction(Read, Optimistic).await.unwrap();
let val = tx.get("test").await.unwrap().unwrap();
assert_eq!(val, b"original text");
tx.cancel().await.unwrap();
}