diff --git a/api/tests/unit_tests/services/recommend_app/test_remote_retrieval.py b/api/tests/unit_tests/services/recommend_app/test_remote_retrieval.py
index 9575aa9f52e..366ceb14f28 100644
--- a/api/tests/unit_tests/services/recommend_app/test_remote_retrieval.py
+++ b/api/tests/unit_tests/services/recommend_app/test_remote_retrieval.py
@@ -1,12 +1,21 @@
+from collections.abc import Iterator
 from unittest.mock import MagicMock, patch
 
 import pytest
 from flask import Flask
+from sqlalchemy import Engine
+from sqlalchemy.orm import Session
 
 from services.recommend_app.recommend_app_type import RecommendAppType
 from services.recommend_app.remote.remote_retrieval import RemoteRecommendAppRetrieval
 
 
+@pytest.fixture
+def empty_sqlite_session(sqlite_engine: Engine) -> Iterator[Session]:
+    with Session(sqlite_engine) as session:
+        yield session
+
+
 class TestRemoteRecommendAppRetrieval:
     def test_get_type(self):
         assert RemoteRecommendAppRetrieval().get_type() == RecommendAppType.REMOTE
@@ -16,10 +25,11 @@ class TestRemoteRecommendAppRetrieval:
         "fetch_recommended_app_detail_from_dify_official",
         return_value={"id": "app-1"},
     )
-    def test_get_recommend_app_detail_success(self, mock_fetch):
-        result = RemoteRecommendAppRetrieval().get_recommend_app_detail("app-1", session=MagicMock())
+    def test_get_recommend_app_detail_success(self, mock_fetch, empty_sqlite_session: Session):
+        result = RemoteRecommendAppRetrieval().get_recommend_app_detail("app-1", session=empty_sqlite_session)
         assert result == {"id": "app-1"}
         mock_fetch.assert_called_once_with("app-1")
+        assert not empty_sqlite_session.in_transaction()
 
     @patch(
         "services.recommend_app.remote.remote_retrieval"
@@ -31,19 +41,25 @@ class TestRemoteRecommendAppRetrieval:
         "fetch_recommended_app_detail_from_dify_official",
         side_effect=ConnectionError("timeout"),
     )
-    def test_get_recommend_app_detail_falls_back_on_error(self, mock_fetch, mock_builtin):
-        result = RemoteRecommendAppRetrieval().get_recommend_app_detail("app-1", session=MagicMock())
+    def test_get_recommend_app_detail_falls_back_on_error(
+        self, mock_fetch, mock_builtin, empty_sqlite_session: Session
+    ):
+        result = RemoteRecommendAppRetrieval().get_recommend_app_detail("app-1", session=empty_sqlite_session)
         assert result == {"id": "fallback"}
         mock_builtin.assert_called_once_with("app-1")
+        assert not empty_sqlite_session.in_transaction()
 
     @patch.object(
         RemoteRecommendAppRetrieval,
         "fetch_recommended_apps_from_dify_official",
         return_value={"recommended_apps": [], "categories": []},
     )
-    def test_get_recommended_apps_success(self, mock_fetch):
-        result = RemoteRecommendAppRetrieval().get_recommended_apps_and_categories("en-US", session=MagicMock())
+    def test_get_recommended_apps_success(self, mock_fetch, empty_sqlite_session: Session):
+        result = RemoteRecommendAppRetrieval().get_recommended_apps_and_categories(
+            "en-US", session=empty_sqlite_session
+        )
         assert result == {"recommended_apps": [], "categories": []}
+        assert not empty_sqlite_session.in_transaction()
 
     @patch(
         "services.recommend_app.remote.remote_retrieval"
@@ -55,20 +71,24 @@ class TestRemoteRecommendAppRetrieval:
         "fetch_recommended_apps_from_dify_official",
         side_effect=ValueError("server error"),
     )
-    def test_get_recommended_apps_falls_back_on_error(self, mock_fetch, mock_builtin):
-        result = RemoteRecommendAppRetrieval().get_recommended_apps_and_categories("en-US", session=MagicMock())
+    def test_get_recommended_apps_falls_back_on_error(self, mock_fetch, mock_builtin, empty_sqlite_session: Session):
+        result = RemoteRecommendAppRetrieval().get_recommended_apps_and_categories(
+            "en-US", session=empty_sqlite_session
+        )
         assert result == {"recommended_apps": [{"id": "builtin"}]}
+        assert not empty_sqlite_session.in_transaction()
 
     @patch.object(
         RemoteRecommendAppRetrieval,
         "fetch_learn_dify_apps_from_dify_official",
         return_value={"recommended_apps": [{"id": "learn-dify-app"}]},
     )
-    def test_get_learn_dify_apps_success(self, mock_fetch):
-        result = RemoteRecommendAppRetrieval().get_learn_dify_apps("en-US", session=MagicMock())
+    def test_get_learn_dify_apps_success(self, mock_fetch, empty_sqlite_session: Session):
+        result = RemoteRecommendAppRetrieval().get_learn_dify_apps("en-US", session=empty_sqlite_session)
 
         assert result == {"recommended_apps": [{"id": "learn-dify-app"}]}
         mock_fetch.assert_called_once_with("en-US")
+        assert not empty_sqlite_session.in_transaction()
 
     @patch(
         "services.recommend_app.remote.remote_retrieval.DatabaseRecommendAppRetrieval.fetch_learn_dify_apps_from_db",
@@ -79,13 +99,14 @@ class TestRemoteRecommendAppRetrieval:
         "fetch_learn_dify_apps_from_dify_official",
         side_effect=ValueError("server error"),
     )
-    def test_get_learn_dify_apps_falls_back_to_database_on_error(self, mock_fetch, mock_database):
-        session = MagicMock()
-
-        result = RemoteRecommendAppRetrieval().get_learn_dify_apps("en-US", session=session)
+    def test_get_learn_dify_apps_falls_back_to_database_on_error(
+        self, mock_fetch, mock_database, empty_sqlite_session: Session
+    ):
+        result = RemoteRecommendAppRetrieval().get_learn_dify_apps("en-US", session=empty_sqlite_session)
 
         assert result == {"recommended_apps": [{"id": "db-fallback"}]}
-        mock_database.assert_called_once_with("en-US", session=session)
+        mock_database.assert_called_once_with("en-US", session=empty_sqlite_session)
+        assert not empty_sqlite_session.in_transaction()
 
 
 class TestFetchFromDifyOfficial: