def test_str3(self): date = datetime(2017, 6, 4) item = TodoItem('implement TodoItem class', date) item.mark() test_string = item.__str__() self.assertEqual(test_string[1], 'x', 'Wrong sign')
def test_str(self): date = datetime(2017, 6, 4) item = TodoItem('implement TodoItem class', date) self.assertIsInstance(item.__str__(), str)