SIENTIAPDE-1169

feat: add shutdown tests for Activities and Email classes

- Implemented unit tests for the shutdown methods in the Activities and Email classes to ensure proper resource cleanup.
- Verified that the shutdown processes for MongoDB, PostgreSQL, and Email are called as expected during the shutdown sequence.

tests/orchestrator/activities/test_activities.py

@@ -111,3 +111,40 @@ def test___init__(mock_postgres_init,
         logger=logger,
         notification_handler=notification_handler
     )
+
+
+@patch('orchestrator.activities.mongo_db.MongoDB.__init__')
+@patch('orchestrator.activities.temporal_manager.TemporalManager.__init__')
+@patch('orchestrator.activities.slot_manager.SlotManager.__init__')
+@patch('orchestrator.activities.formatters.Formatters.__init__')
+@patch('orchestrator.activities.email.Email.__init__')
+@patch('sientia_do.temporal.activities.postgres.Postgres.__init__')
+@patch('orchestrator.activities.email.Email.shutdown')
+@patch('sientia_do.temporal.activities.postgres.Postgres.close')
+@patch('orchestrator.activities.mongo_db.MongoDB.shutdown')
+def test_shutdown(mock_mongodb_close,
+                  mock_postgres_shutdown,
+                  mock_email_close,
+                  mock_postgres_init,
+                  mock_email_init,
+                  mock_formatters_init,
+                  mock_slot_manager_init,
+                  mock_temporal_manager_init,
+                  mock_mongodb_init,
+                  ):
+
+    activities = Activities(
+        temporal_config=MagicMock(),
+        redis_config=MagicMock(),
+        mongodb_config=MagicMock(),
+        email_config=MagicMock(),
+        postgres_config=MagicMock(),
+        logger=MagicMock(),
+        notification_handler=MagicMock()
+    )
+
+    activities.shutdown()
+
+    mock_mongodb_close.assert_called()
+    mock_postgres_shutdown.assert_called()
+    mock_email_close.assert_called()

tests/orchestrator/activities/test_email.py

@@ -76,6 +76,12 @@ metadata = {
 }
 
 
+def test_shutdown(email):
+    email.shutdown()
+
+    email.server.quit.assert_called_once()
+
+
 @mark.asyncio
 async def test_build_email_html(email):
     email.email_builder.build_email = MagicMock(