Multiliquid

function test_redemptionFeeNotRetained() public {        // Fast forward time by 7 days to avoid arithmetic underflow in ULTRADelegate        vm.warp(block.timestamp + 7 days);        setupAgoraPools();                        // set redemption fee to 1%        vm.prank(stablecoinIssuerAdmin3);        ausdDelegate.setRWARedemptionFee(ULTRA_ID, 1e16);                        //Mint AUSD to user        ausd.mint(regularUser, 150_000e6); //150k AUSD                        vm.startPrank(regularUser);        //Approval to the ausd delegate        ausd.approve(address(ausdDelegate), type(uint256).max);                        //Swap from AUSD to Ultra        multiliquidSwap.swapIntoRWA(ULTRA_ID, AUSD_ID, 50_000e6, "", "");                // assert that delegate has not kept redemption fee in either RWA or AUSD        assertEq(ausd.balanceOf(address(ausdDelegate)), 0);        assertEq(ultra.balanceOf(address(ausdDelegate)), 0);}

function test_calculateStableAmt_RepeatedRounding() public {    address mockStablecoin = makeAddr("mockStablecoin");    swap.setStablecoinAcceptance(        stablecoinID, address(stablecoinDelegate), mockStablecoin, 6, true, false    );    uint256 rwaValue = 3e18; // 3 USD    uint256 rwaAmount = 100e18; // 100 RWA    uint256 adjustmentBps = 20e14; // 20 bps    uint256 feeBps = 10e14; // 10 bps    uint256 redemptionFeeBps = 0; // No redemption fee for this test        _setupScenario(rwaValue, adjustmentBps, feeBps, redemptionFeeBps);        (uint256 customerAmount, uint256 feeAmount) =        swap.calculateStableAmt(stablecoinID, rwaID, rwaAmount, "");    assertEq(customerAmount, 0);    assertEq(feeAmount, 0);}

- 0 to disable+ 0 to disable swaps

test_maliciousRWA_RevertTransfer() (gas: 10 (0.001%)) test_deployStablecoin_AgoraSwapReverts() (gas: 10 (0.006%)) test_deployStablecoin_InsufficientAUSDOutput() (gas: 10 (0.008%)) test_maliciousStablecoinToRwa_ReducedRwaOutput() (gas: -395 (-0.013%)) test_maliciousAgoraContract_ReducedOutput() (gas: -395 (-0.013%)) test_maliciousAgoraContract_ZeroOutput() (gas: -395 (-0.014%)) test_MegaE2E() (gas: -1056 (-0.058%)) test_fuzz_normal_swap_into_rwa_happy_path_ausd(uint256) (gas: -393 (-0.071%)) test_normal_swap_into_rwa_happy_path_ausd() (gas: -393 (-0.072%)) test_normal_swap_into_stablecoin_happy_path_ausd() (gas: -663 (-0.124%)) test_receiveStablecoin_minimal() (gas: -393 (-0.124%)) test_normal_swap_into_stablecoin_happy_path_fuzz(uint256) (gas: -663 (-0.130%)) test_receiveStablecoin_Success() (gas: -393 (-0.145%)) test_receiveStablecoin_InsufficientRWAAmount() (gas: -260 (-0.154%)) test_deployStablecoin_Success_RWAAsToken0() (gas: -663 (-0.237%)) test_deployStablecoin_ReentrancyProtection() (gas: -663 (-0.256%)) test_receiveStablecoin_ZeroAmounts() (gas: -393 (-0.307%)) test_maliciousRWA_TransferFee_RwaToStablecoin() (gas: -50943 (-0.601%)) test_deployStablecoin_InvalidTokenConfiguration() (gas: -51213 (-0.602%)) test_deployStablecoin_Success_RWAAsToken1() (gas: -51615 (-0.667%)) test_deployStablecoin_InvalidAgoraContract() (gas: -50942 (-0.685%)) test_receiveStablecoin_InvalidAgoraContract() (gas: -51212 (-0.687%)) test_maliciousStablecoin_TransferFee_StablecoinToRwa() (gas: -51212 (-0.887%)) test_maliciousStablecoin_BalanceManipulation() (gas: -50942 (-0.890%)) Overall gas change: -365167 (-0.210%)

diff --git a/src/ProtocolStablecoinDelegates/AUSDDelegate.sol b/src/ProtocolStablecoinDelegates/AUSDDelegate.solindex 838a5d6..bf1f5c5 100644--- a/src/ProtocolStablecoinDelegates/AUSDDelegate.sol+++ b/src/ProtocolStablecoinDelegates/AUSDDelegate.sol@@ -187,9 +187,10 @@ contract AUSDDelegate is StablecoinDelegate, IExternalSwapStablecoinDelegate {             AgoraStableSwapPair(agoraStableSwapContract[params.rwaAddress]);         if (address(agoraContract) == address(0)) revert InvalidAgoraContract(); +        IERC20 _stablecoin = IERC20(stablecoinAddress);         // Calculate expected AUSD amount         uint256 expectedAusdAmount = _getExpectedOutput(-            address(agoraContract), stablecoinAddress, params.rwaAddress, params.rwaAmount+            address(agoraContract), address(_stablecoin), params.rwaAddress, params.rwaAmount         );          // Ensure we get enough AUSD to cover vault fee + user amount@@ -203,13 +204,13 @@ contract AUSDDelegate is StablecoinDelegate, IExternalSwapStablecoinDelegate {         );          // Check balance before swap-        uint256 balanceBefore = IERC20(stablecoinAddress).balanceOf(address(this));+        uint256 balanceBefore = _stablecoin.balanceOf(address(this));          // Execute the swap-        _performSwap(agoraContract, expectedAusdAmount, address(this), stablecoinAddress);+        _performSwap(agoraContract, expectedAusdAmount, address(this), address(_stablecoin));          // Verify actual amount received-        uint256 balanceAfter = IERC20(stablecoinAddress).balanceOf(address(this));+        uint256 balanceAfter = _stablecoin.balanceOf(address(this));         uint256 actualReceived = balanceAfter - balanceBefore;         uint256 totalRequired = params.vaultAmount + params.userAmount; @@ -218,8 +219,8 @@ contract AUSDDelegate is StablecoinDelegate, IExternalSwapStablecoinDelegate {         }          // Distribute the received AUSD-        IERC20(stablecoinAddress).safeTransfer(params.vault, params.vaultAmount);-        IERC20(stablecoinAddress).safeTransfer(params.user, params.userAmount);+        _stablecoin.safeTransfer(params.vault, params.vaultAmount);+        _stablecoin.safeTransfer(params.user, params.userAmount);     }      function _executeStablecoinToRwaSwap(SwapIntoRwaParams memory params) internal {@@ -227,17 +228,18 @@ contract AUSDDelegate is StablecoinDelegate, IExternalSwapStablecoinDelegate {             AgoraStableSwapPair(agoraStableSwapContract[params.rwaAddress]);         if (address(agoraContract) == address(0)) revert InvalidAgoraContract(); -        IERC20(stablecoinAddress).safeTransferFrom(params.user, address(this), params.totalAmount);-        IERC20(stablecoinAddress).safeTransfer(params.vault, params.vaultAmount);+        IERC20 _stablecoin = IERC20(stablecoinAddress);+        _stablecoin.safeTransferFrom(params.user, address(this), params.totalAmount);+        _stablecoin.safeTransfer(params.vault, params.vaultAmount);          uint256 stablecoinToSwap = params.totalAmount - params.vaultAmount;         uint256 expectedRwaAmount = _getExpectedOutput(-            address(agoraContract), params.rwaAddress, stablecoinAddress, stablecoinToSwap+            address(agoraContract), params.rwaAddress, address(_stablecoin), stablecoinToSwap         );          if (expectedRwaAmount < params.rwaAmount) revert InsufficientRWAAmount(); -        IERC20(stablecoinAddress).safeTransfer(address(agoraContract), stablecoinToSwap);+        _stablecoin.safeTransfer(address(agoraContract), stablecoinToSwap);          // Check user's RWA balance before swap         uint256 userRwaBalanceBefore = IERC20(params.rwaAddress).balanceOf(params.user);