From 7988222e99fb499c733f7b0f9ca183902003fd01 Mon Sep 17 00:00:00 2001
From: Victor Giers <mail@victorgiers.com>
Date: Tue, 31 Mar 2026 01:36:18 +0200
Subject: [PATCH] Add test for stable snapshot between store updates

---
 tests/domain/editor-store.test.ts | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/tests/domain/editor-store.test.ts b/tests/domain/editor-store.test.ts
index 6349def5..e8f84480 100644
--- a/tests/domain/editor-store.test.ts
+++ b/tests/domain/editor-store.test.ts
@@ -22,6 +22,21 @@ class MemoryStorage implements KeyValueStorage {
 }
 
 describe("EditorStore", () => {
+  it("returns a stable snapshot between store updates", () => {
+    const store = createEditorStore();
+
+    const initialSnapshot = store.getState();
+    const repeatedSnapshot = store.getState();
+
+    expect(repeatedSnapshot).toBe(initialSnapshot);
+
+    store.executeCommand(createSetSceneNameCommand("Snapshot Scene"));
+
+    const updatedSnapshot = store.getState();
+    expect(updatedSnapshot).not.toBe(initialSnapshot);
+    expect(updatedSnapshot.document.name).toBe("Snapshot Scene");
+  });
+
   it("applies command history with undo and redo", () => {
     const store = createEditorStore();