code: def test_user_favorite_tag_exc_raise(mocker):
      from superset.daos.tag import TagDAO
      from superset.exceptions import MissingUserContextException
  
      # Mock the behavior of TagDAO and g
      mock_session = mocker.patch("superset.daos.tag.db.session")
      mock_TagDAO = mocker.patch("superset.daos.tag.TagDAO")
      mock_tag = mocker.MagicMock(users_favorited=[])
      mock_TagDAO.find_by_id.return_value = mock_tag
  
      mock_g = mocker.patch(
          "superset.daos.tag.g"
      )  # Replace with the actual path to g
  
      # Test that exception is raised when commit fails
      mock_session.commit.side_effect = Exception("DB Error")
      with pytest.raises(Exception):
          TagDAO.remove_user_favorite_tag(1)
  
file_path: superset/tests/unit_tests/dao/tag_test.py
imports: from collections.abc import Iterator
  import pytest
  from sqlalchemy.orm.session import Session
label_desc: Use image node_id 6 for calling a global function with example usage: test_user_favorite_tag_exc_raise(mocker) without return types