def test_save_persists_min_max(self): chart = Chart(self.conn, space_id=self.space.id) self.assertIsNone(chart.min) self.assertIsNone(chart.max) chart.min = 5 chart.max = 30 chart.save() found = self.conn.get_chart(chart.id, self.space.id) self.assertEqual(found.min, 5) self.assertEqual(found.max, 30)