def test_course_key(self):
        """
        Test CourseKey
        """
        key = CourseKey.from_string('org.id/course_id/run')
        self.assertEqual(key.org, 'org.id')

        key = CourseKey.from_string('course-v1:org.id+course_id+run')
        self.assertEqual(key.org, 'org.id')