def test_stament_three():
'''
1 5
8 3
'''
items = [Item(8, 3)]
assert calculate_best_items(items, 5) == 0
def test_stament_one():
'''3 5
1 3
1 2
1 1
'''
items = [Item(1, 3), Item(1, 2), Item(1, 1)]
assert calculate_best_items(items, 5) == 6
def test_stament_four():
'''4 10
6 30
3 14
4 16
2 9
'''
items = [Item(6, 30), Item(3, 14), Item(4, 16), Item(2, 9)]
assert calculate_best_items(items, 10) == 46
def test_stament_two():
'''
5 10
1 4
2 5
1 2
4 6
8 12
'''
items = [Item(1, 4), Item(2, 5), Item(1, 2), Item(4, 6), Item(8, 12)]
assert calculate_best_items(items, 10) == 18
def test_calculate_for_weight_one():
items = [Item(1, 1), Item(1, 2), Item(1, 9), Item(2, 80000)]
assert calculate_best_items(items, 1) == 9