def test_can_update_deposition_date(self):
file_ = File()
file_._deposition_date = date(1990, 9, 28)
file_.deposition_date = date(1993, 9, 30)
self.assertEqual(file_._deposition_date, date(1993, 9, 30))
def test_can_get_deposition_date(self):
file_ = File()
file_._deposition_date = date(1990, 9, 28)
self.assertIs(file_._deposition_date, file_.deposition_date)
