Add test

server/backend/database/testcases/testcases.go

@@ -919,6 +919,46 @@ func RunCreateChangeInfosTest(t *testing.T, db database.Database, projectID type
 		assert.NoError(t, err)
 		assert.NotEqual(t, database.DocumentRemoved, clientInfo.Documents[docInfo.ID].Status)
 	})
+
+	t.Run("set updated_at in docInfo test", func(t *testing.T) {
+		ctx := context.Background()
+		docKey := helper.TestDocKey(t)
+
+		// 01. Create a client and a document then attach the document to the client.
+		clientInfo, _ := db.ActivateClient(ctx, projectID, t.Name())
+		docInfo1, _ := db.FindDocInfoByKeyAndOwner(ctx, clientInfo.RefKey(), docKey, true)
+		docRefKey := docInfo1.RefKey()
+		assert.NoError(t, clientInfo.AttachDocument(docRefKey.DocID, false))
+		assert.NoError(t, db.UpdateClientInfoAfterPushPull(ctx, clientInfo, docInfo1))
+
+		bytesID, _ := clientInfo.ID.Bytes()
+		actorID, _ := time.ActorIDFromBytes(bytesID)
+		doc := document.New(key.Key(t.Name()))
+		doc.SetActor(actorID)
+
+		// 02. update document only presence
+		assert.NoError(t, doc.Update(func(root *json.Object, p *presence.Presence) error {
+			p.Set("key", "val")
+			return nil
+		}))
+		pack := doc.CreateChangePack()
+		updatedAt := docInfo1.UpdatedAt
+		assert.NoError(t, db.CreateChangeInfos(ctx, projectID, docInfo1, 0, pack.Changes, false))
+		docInfo2, _ := db.FindDocInfoByKeyAndOwner(ctx, clientInfo.RefKey(), docKey, true)
+		assert.Equal(t, updatedAt, docInfo2.UpdatedAt)
+
+		// 03. update document presence and operation
+		assert.NoError(t, doc.Update(func(root *json.Object, p *presence.Presence) error {
+			p.Set("key", "val")
+			root.SetNewArray("array")
+			return nil
+		}))
+		pack = doc.CreateChangePack()
+		updatedAt = docInfo2.UpdatedAt
+		assert.NoError(t, db.CreateChangeInfos(ctx, projectID, docInfo2, 0, pack.Changes, false))
+		docInfo3, _ := db.FindDocInfoByKeyAndOwner(ctx, clientInfo.RefKey(), docKey, true)
+		assert.NotEqual(t, updatedAt, docInfo3.UpdatedAt)
+	})
 }
 
 // RunUpdateClientInfoAfterPushPullTest runs the UpdateClientInfoAfterPushPull tests for the given db.