'Test that we get back the appropriate usage key for the root of a course key.'

def test_make_course_usage_key(self):

    course_key = CourseLocator(org='edX', course='101', run='2015')
    root_block_key = self.draft_store.make_course_usage_key(course_key)
    self.assertEqual(root_block_key.block_type, 'course')
    self.assertEqual(root_block_key.name, '2015')
