Delete user folder permissions when user is removed from a service

tests/app/dao/test_template_folder_dao.py

@@ -0,0 +1,16 @@
+from app import db
+from app.dao.service_user_dao import dao_get_service_user
+from app.dao.template_folder_dao import dao_delete_template_folder, dao_update_template_folder
+from app.models import user_folder_permissions
+from tests.app.db import create_template_folder
+
+
+def test_dao_delete_template_folder_deletes_user_folder_permissions(sample_user, sample_service):
+    folder = create_template_folder(sample_service)
+    service_user = dao_get_service_user(sample_user.id, sample_service.id)
+    folder.users = [service_user]
+    dao_update_template_folder(folder)
+
+    dao_delete_template_folder(folder)
+
+    assert db.session.query(user_folder_permissions).all() == []