def test_base_case(self):
        cap = 0
        val = [0]
        w = [0]
        c = len(val)
        self.assertEqual(k.knapsack(cap, w, val, c), 0)

        val = [60]
        w = [10]
        c = len(val)
        self.assertEqual(k.knapsack(cap, w, val, c), 0)