From 8f2d4d9d400e398b54cf1bad36057f3f8f4a69a4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=BF=97=E5=AE=87?= <hello@evanlinjin.me>
Date: Fri, 29 Dec 2023 18:23:42 +0800
Subject: [PATCH] test(chain): `LocalChain` test for update that is shorter
 than original

---
 crates/chain/tests/test_local_chain.rs | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/crates/chain/tests/test_local_chain.rs b/crates/chain/tests/test_local_chain.rs
index c190ae52..c1a1cd7f 100644
--- a/crates/chain/tests/test_local_chain.rs
+++ b/crates/chain/tests/test_local_chain.rs
@@ -292,6 +292,27 @@ fn update_local_chain() {
                 ],
             },
         },
+        // Allow update that is shorter than original chain
+        //        | 0 | 1 | 2 | 3 | 4 | 5
+        // chain  | A       C   D   E   F
+        // update | A       C   D'
+        TestLocalChain {
+            name: "allow update that is shorter than original chain",
+            chain: local_chain![(0, h!("_")), (2, h!("C")), (3, h!("D")), (4, h!("E")), (5, h!("F"))],
+            update: chain_update![(0, h!("_")), (2, h!("C")), (3, h!("D'"))],
+            exp: ExpectedResult::Ok {
+                changeset: &[
+                    (3, Some(h!("D'"))),
+                    (4, None),
+                    (5, None),
+                ],
+                init_changeset: &[
+                    (0, Some(h!("_"))),
+                    (2, Some(h!("C"))),
+                    (3, Some(h!("D'"))),
+                ],
+            },
+        },
     ]
     .into_iter()
     .for_each(TestLocalChain::run);