def test_can_update_rfree(self):
file_ = File()
file_._rfree = 2.5
file_.rfree = 1.9
self.assertEqual(file_._rfree, 1.9)
def test_can_get_rfree(self):
file_ = File()
file_._rfree = 2.5
self.assertIs(file_._rfree, file_.rfree)