I need initiate a module with different initial data. As example [TestGetHtmlMethod.test_get_html_source](https://github.com/edx/edx-platform/blob/26cf932e34247799fb73328db4ef7a35b523ea56/lms/djangoapps/courseware/tests/test_video_mongo.py#L251). Before, I could do that by creating separate class for each test, but this way is more convenient from my point of view.