def test_equals(self): self.assertEqual(repeat_sum([[1, 2, 3], [2, 8, 9], [7, 123, 8]]), 10)
def test_equals_2(self): self.assertEqual(repeat_sum([[1], [2], [3, 4, 4, 4], [123456789]]), 0)
def test_equals_3(self): self.assertEqual(repeat_sum([[1, 8, 8], [8, 8, 8], [8, 8, 8, 1]]), 9)