def test_can_return_model_as_best_assembly(self, mock_best):
mock_best.return_value = None
f = File()
f._models = "ABCDEF"
model = f.generate_best_assembly()
self.assertEqual(model, "A")
def test_can_get_model(self):
file_ = File()
file_._models = ["1", "2"]
self.assertIs(file_.model, file_._models[0])