def METHOD_NAME(mocker):
    from superset.daos.tag import TagDAO
    # 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
    mock_user = mocker.MagicMock()
    mock_g.user = mock_user
    # Append the mock user to the tag's list of favorited users
    mock_tag.users_favorited.append(mock_user)
    # Call the function with a test tag_id
    TagDAO.remove_user_favorite_tag(123)
    # Check that find_by_id was called with the right argument
    mock_TagDAO.find_by_id.assert_called_once_with(123)
    # Check that users_favorited no longer contains the user
    assert mock_user not in mock_tag.users_favorited
    # Check that the session was committed
    mock_session.commit.assert_called_once()