def test_equals_2(self): self.assertEqual(sum_digits(65536), 7)
def test_equals(self): self.assertEqual(sum_digits(4523), 5)
def test_equals_6(self): self.assertEqual(sum_digits(99), 9)
def test_equals_5(self): self.assertEqual(sum_digits(41), 5)
def test_equals_4(self): self.assertEqual(sum_digits(100), 1)
def test_equals_3(self): self.assertEqual(sum_digits(0), 0)