Merge pull request #125 from GenerationSoftware/gen-1906-research-oth…

…er-options-for-staked-eth-op-rewards

add beefy silo weth vault integration tests

test/integration/beefy/BeefyOpWethInEzethSilo.t.sol

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+// SPDX-License-Identifier: MIT
+pragma solidity ^0.8.24;
+
+import { BaseIntegration, IERC20, IERC4626 } from "../BaseIntegration.t.sol";
+
+contract BeefyOpWethInEzethSiloIntegrationTest is BaseIntegration {
+    uint256 fork;
+    uint256 forkBlock = 123760428;
+    uint256 forkBlockTimestamp = 1723119633;
+
+    address internal _beefyWrapper = address(0x182be93E1C0C4d305fe43bD093292F21fd679797);
+
+    address internal _asset = address(0x4200000000000000000000000000000000000006);
+    address internal _assetWhale = address(0x86Bb63148d17d445Ed5398ef26Aa05Bf76dD5b59);
+    address internal _yieldVault;
+    address internal _mooVault = address(0xe50d9121d1fefcEFE720731C805C5B6E6B1FC779);
+    address internal _mooYieldSource = address(0xc1EB34965346D959115b93024c99F3F8eD701DA8);
+    address internal _siloYieldToken = address(0x9f3f998f52dda45D83234cF3A29995C391dB2b16);
+
+    /* ============ setup ============ */
+
+    function setUpUnderlyingAsset() public virtual override returns (IERC20 asset, uint8 decimals, uint256 approxAssetUsdExchangeRate) {
+        return (IERC20(_asset), 18, 3000e18);
+    }
+
+    function setUpYieldVault() public virtual override returns (IERC4626) {
+        (bool success, bytes memory data) = _beefyWrapper.call(abi.encodeWithSignature("clone(address)", _mooVault));
+        require(success, "beefy vault wrapper failed");
+        (_yieldVault) = abi.decode(data, (address));
+        return IERC4626(_yieldVault);
+    }
+
+    function setUpFork() public virtual override {
+        fork = vm.createFork(vm.rpcUrl("optimism"), forkBlock);
+        vm.selectFork(fork);
+        vm.warp(forkBlockTimestamp);
+    }
+
+    function beforeSetup() public virtual override {
+        lowGasPriceEstimate = 0.05 gwei; // just L2 gas, we ignore L1 costs for a super low estimate
+        assetPrecisionLoss = 1; // additional rounding errors
+    }
+
+    function afterSetup() public virtual override { }
+
+    /* ============ helpers to override ============ */
+
+    /// @dev The max amount of assets than can be dealt.
+    function maxDeal() public virtual override returns (uint256) {
+        return underlyingAsset.balanceOf(_assetWhale);
+    }
+
+    /// @dev May revert if the amount requested exceeds the amount available to deal.
+    function dealAssets(address to, uint256 amount) public virtual override prankception(_assetWhale) {
+        underlyingAsset.transfer(to, amount);
+    }
+
+    /// @dev Accrues yield by letting time pass and triggering multiple yield accruals
+    function _accrueYield() internal virtual override prankception(_assetWhale) {
+        // yield accrues on deposit / withdraw so we can do a deposit and withdraw to the yield vault directly to trigger some yield accrual
+        uint256 amount = 10 ** assetDecimals; // some small amount of assets
+        underlyingAsset.approve(_yieldVault, amount);
+        yieldVault.deposit(amount, _assetWhale);
+        vm.warp(block.timestamp + 1 days); // let 1 day pass by
+        uint256 maxRedeem = yieldVault.maxRedeem(_assetWhale);
+        yieldVault.redeem(maxRedeem, _assetWhale, _assetWhale);
+
+        // we also call a deposit directly on the moo vault to ensure it triggers a yield accrual
+        underlyingAsset.approve(_mooVault, amount);
+        (bool success,) = _mooVault.call(abi.encodeWithSignature("deposit(uint256)", amount));
+        assertEq(success, true, "moo vault deposit success");
+    }
+
+    /// @dev Simulates loss by sending yield-bearing tokens out of the yield source and re-depositing some assets to trigger an update
+    function _simulateLoss() internal virtual override prankception(_mooYieldSource) {
+        IERC20(_siloYieldToken).transfer(_assetWhale, IERC20(_siloYieldToken).balanceOf(_mooYieldSource) / 2);
+        startPrank(alice);
+        uint256 amount = 10 ** assetDecimals;
+        dealAssets(alice, amount);
+        underlyingAsset.approve(_yieldVault, amount);
+        yieldVault.deposit(amount, alice);
+        stopPrank();
+    }
+
+}

test/integration/beefy/BeefyOpWethInWstethSilo.t.sol

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+// SPDX-License-Identifier: MIT
+pragma solidity ^0.8.24;
+
+import { BaseIntegration, IERC20, IERC4626 } from "../BaseIntegration.t.sol";
+
+contract BeefyOpWethInWstethSiloIntegrationTest is BaseIntegration {
+    uint256 fork;
+    uint256 forkBlock = 123760428;
+    uint256 forkBlockTimestamp = 1723119633;
+
+    address internal _beefyWrapper = address(0x182be93E1C0C4d305fe43bD093292F21fd679797);
+
+    address internal _asset = address(0x4200000000000000000000000000000000000006);
+    address internal _assetWhale = address(0x86Bb63148d17d445Ed5398ef26Aa05Bf76dD5b59);
+    address internal _yieldVault;
+    address internal _mooVault = address(0x9F18a883209095CB3a5E600BBAa22be3F0f8880a);
+    address internal _mooYieldSource = address(0xc2c4229FD4357eCc0D11c919e311A138F973d829);
+    address internal _siloYieldToken = address(0x633De586a3e4764f63B9ceF97F8c04d3b1d9895e);
+
+    /* ============ setup ============ */
+
+    function setUpUnderlyingAsset() public virtual override returns (IERC20 asset, uint8 decimals, uint256 approxAssetUsdExchangeRate) {
+        return (IERC20(_asset), 18, 3000e18);
+    }
+
+    function setUpYieldVault() public virtual override returns (IERC4626) {
+        (bool success, bytes memory data) = _beefyWrapper.call(abi.encodeWithSignature("clone(address)", _mooVault));
+        require(success, "beefy vault wrapper failed");
+        (_yieldVault) = abi.decode(data, (address));
+        return IERC4626(_yieldVault);
+    }
+
+    function setUpFork() public virtual override {
+        fork = vm.createFork(vm.rpcUrl("optimism"), forkBlock);
+        vm.selectFork(fork);
+        vm.warp(forkBlockTimestamp);
+    }
+
+    function beforeSetup() public virtual override {
+        lowGasPriceEstimate = 0.05 gwei; // just L2 gas, we ignore L1 costs for a super low estimate
+        assetPrecisionLoss = 1; // additional rounding errors
+    }
+
+    function afterSetup() public virtual override { }
+
+    /* ============ helpers to override ============ */
+
+    /// @dev The max amount of assets than can be dealt.
+    function maxDeal() public virtual override returns (uint256) {
+        return underlyingAsset.balanceOf(_assetWhale);
+    }
+
+    /// @dev May revert if the amount requested exceeds the amount available to deal.
+    function dealAssets(address to, uint256 amount) public virtual override prankception(_assetWhale) {
+        underlyingAsset.transfer(to, amount);
+    }
+
+    /// @dev Accrues yield by letting time pass and triggering multiple yield accruals
+    function _accrueYield() internal virtual override prankception(_assetWhale) {
+        // yield accrues on deposit / withdraw so we can do a deposit and withdraw to the yield vault directly to trigger some yield accrual
+        uint256 amount = 10 ** assetDecimals; // some small amount of assets
+        underlyingAsset.approve(_yieldVault, amount);
+        yieldVault.deposit(amount, _assetWhale);
+        vm.warp(block.timestamp + 1 days); // let 1 day pass by
+        uint256 maxRedeem = yieldVault.maxRedeem(_assetWhale);
+        yieldVault.redeem(maxRedeem, _assetWhale, _assetWhale);
+
+        // we also call a deposit directly on the moo vault to ensure it triggers a yield accrual
+        underlyingAsset.approve(_mooVault, amount);
+        (bool success,) = _mooVault.call(abi.encodeWithSignature("deposit(uint256)", amount));
+        assertEq(success, true, "moo vault deposit success");
+    }
+
+    /// @dev Simulates loss by sending yield-bearing tokens out of the yield source and re-depositing some assets to trigger an update
+    function _simulateLoss() internal virtual override prankception(_mooYieldSource) {
+        IERC20(_siloYieldToken).transfer(_assetWhale, IERC20(_siloYieldToken).balanceOf(_mooYieldSource) / 2);
+        startPrank(alice);
+        uint256 amount = 10 ** assetDecimals;
+        dealAssets(alice, amount);
+        underlyingAsset.approve(_yieldVault, amount);
+        yieldVault.deposit(amount, alice);
+        stopPrank();
+    }
+
+}