From 7a2085c02f099a83ca8fd12fa27cc5a96232b3c3 Mon Sep 17 00:00:00 2001
From: Pekka Enberg <penberg@iki.fi>
Date: Sat, 8 Apr 2023 16:42:32 +0300
Subject: [PATCH] Improve lost update test case

Let's verify that first-writer wins. We still need to fix the second
writer commit() to fail.
---
 core/mvcc/database/src/lib.rs | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/core/mvcc/database/src/lib.rs b/core/mvcc/database/src/lib.rs
index cb9463a73..bc29f0cc5 100644
--- a/core/mvcc/database/src/lib.rs
+++ b/core/mvcc/database/src/lib.rs
@@ -578,5 +578,9 @@ mod tests {
 
         db.commit_tx(tx2);
         db.commit_tx(tx3); // TODO: this should fail
+
+        let tx4 = db.begin_tx();
+        let row = db.read(tx4, 1).unwrap();
+        assert_eq!(tx2_row, row);
     }
 }