Liquidity.Party/tycho-execution
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feat: No more fee taking

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- This required an extra transfer into the router at the end of the swap sequence, costing an unnecessary 40k gas or more for certain protocols.
This commit is contained in:
TAMARA LIPOWSKI
2025-04-11 23:36:20 -04:00
committed by Diana Carvalho
parent 5fe2c2715c
commit 6f2e5ac10e
7 changed files with 6 additions and 242 deletions
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47
foundry/test/TychoRouterSingleSwap.t.sol
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@@ -8,9 +8,6 @@ import "./executors/UniswapV4Utils.sol";
import {SafeCallback} from "@uniswap/v4-periphery/src/base/SafeCallback.sol";
contract TychoRouterSingleSwapTest is TychoRouterTestSetup {
bytes32 public constant FEE_SETTER_ROLE =
0xe6ad9a47fbda1dc18de1eb5eeb7d935e5e81b4748f3cfc61e233e64f88182060;
function testSingleSwapPermit2() public {
// Trade 1 WETH for DAI with 1 swap on Uniswap V2 using Permit2
// 1 WETH -> DAI
@@ -179,50 +176,6 @@ contract TychoRouterSingleSwapTest is TychoRouterTestSetup {
);
}
function testSingleSwapFee() public {
// Trade 1 WETH for DAI with 1 swap on Uniswap V2
// Takes 1% fee at the end
vm.startPrank(FEE_SETTER);
tychoRouter.setFee(100);
tychoRouter.setFeeReceiver(FEE_RECEIVER);
vm.stopPrank();
uint256 amountIn = 1 ether;
deal(WETH_ADDR, ALICE, amountIn);
vm.startPrank(ALICE);
// Approve the tokenIn to be transferred to the router
IERC20(WETH_ADDR).approve(address(tychoRouterAddr), amountIn);
bytes memory protocolData = encodeUniswapV2Swap(
WETH_ADDR, WETH_DAI_POOL, tychoRouterAddr, false
);
bytes memory swap =
encodeSingleSwap(address(usv2Executor), protocolData);
uint256 minAmountOut = 2600 * 1e18;
uint256 amountOut = tychoRouter.singleSwap(
amountIn,
WETH_ADDR,
DAI_ADDR,
minAmountOut,
false,
false,
ALICE,
swap
);
uint256 expectedAmount = 2633283105570259262790;
assertEq(amountOut, expectedAmount);
uint256 usdcBalance = IERC20(DAI_ADDR).balanceOf(ALICE);
assertEq(usdcBalance, expectedAmount);
assertEq(IERC20(DAI_ADDR).balanceOf(FEE_RECEIVER), 26598819248184436997);
vm.stopPrank();
}
function testSingleSwapWrapETH() public {
uint256 amountIn = 1 ether;
deal(ALICE, amountIn);