From 127134c785a86ddf97ece35cfff1ea80be5551da Mon Sep 17 00:00:00 2001 From: 0xchin Date: Wed, 4 Dec 2024 15:25:22 -0300 Subject: [PATCH] refactor(tests): separate tests by functionality --- package.json | 1 - src/contracts/Grateful.sol | 5 +- test/unit/Deploy.t.sol | 50 +++++ test/unit/Grateful.t.sol | 344 -------------------------------- test/unit/TokenManagement.t.sol | 46 +++++ test/unit/helpers/Base.t.sol | 151 ++++++++++++++ 6 files changed, 248 insertions(+), 349 deletions(-) create mode 100644 test/unit/Deploy.t.sol delete mode 100644 test/unit/Grateful.t.sol create mode 100644 test/unit/TokenManagement.t.sol create mode 100644 test/unit/helpers/Base.t.sol diff --git a/package.json b/package.json index f2e1a62..cc74767 100644 --- a/package.json +++ b/package.json @@ -32,7 +32,6 @@ "test:arbitrum-sepolia": "TESTING=true FORKED_NETWORK=arbitrum-sepolia FORK_BLOCK=98684306 forge test -vvv ", "test:base": "TESTING=true FORKED_NETWORK=base FORK_BLOCK=20648648 forge test -vvv ", "test:bnb": "TESTING=true FORKED_NETWORK=bnb FORK_BLOCK=44138162 forge test -vvv ", - "test:fuzz": "echidna test/invariants/fuzz/Greeter.t.sol --contract InvariantGreeter --corpus-dir test/invariants/fuzz/echidna_coverage/ --test-mode assertion", "test:optimism": "TESTING=true FORKED_NETWORK=optimism FORK_BLOCK=121238511 forge test -vvv ", "test:optimism-sepolia": "TESTING=true FORKED_NETWORK=optimism-sepolia FORK_BLOCK=20113040 forge test -vvv ", "test:polygon": "TESTING=true FORKED_NETWORK=polygon FORK_BLOCK=62103393 forge test -vvv ", diff --git a/src/contracts/Grateful.sol b/src/contracts/Grateful.sol index 6114a97..03042d0 100644 --- a/src/contracts/Grateful.sol +++ b/src/contracts/Grateful.sol @@ -203,10 +203,7 @@ contract Grateful is IGrateful, Ownable2Step, ReentrancyGuard { /// @inheritdoc IGrateful function removeToken( address _token - ) external onlyOwner { - if (!tokensWhitelisted[_token]) { - revert Grateful_TokenOrVaultNotFound(); - } + ) external onlyOwner onlyWhenTokenWhitelisted(_token) { delete tokensWhitelisted[_token]; IERC20 token = IERC20(_token); token.forceApprove(address(aavePool), 0); diff --git a/test/unit/Deploy.t.sol b/test/unit/Deploy.t.sol new file mode 100644 index 0000000..fe80ac0 --- /dev/null +++ b/test/unit/Deploy.t.sol @@ -0,0 +1,50 @@ +// SPDX-License-Identifier: MIT +pragma solidity 0.8.26; + +// Grateful contract and related interfaces +import {Grateful, IGrateful} from "contracts/Grateful.sol"; + +// Aave V3 interfaces +import {IPool} from "yield-daddy/aave-v3/AaveV3ERC4626.sol"; + +// Base test contract +import {UnitBase} from "./helpers/Base.t.sol"; + +contract UnitDeploy is UnitBase { + // Test the constructor with valid arguments + function test_ConstructorWhenPassingValidArgs() public { + // Deploy the Grateful contract + grateful = new Grateful(tokens, IPool(address(aavePool)), initialFee, initialPerformanceFee, owner); + + // Check that the Grateful contract is deployed correctly + assertEq(grateful.owner(), owner); + assertEq(address(grateful.aavePool()), address(aavePool)); + assertEq(grateful.fee(), initialFee); + assertEq(grateful.performanceFee(), initialPerformanceFee); + assertEq(grateful.tokensWhitelisted(address(token)), true); + } + + // Test the constructor with an invalid pool address + function test_ConstructorWhenPassingInvalidPoolAddress() public { + vm.expectRevert(abi.encodeWithSelector(IGrateful.Grateful_InvalidAddress.selector)); + grateful = new Grateful(tokens, IPool(address(0)), initialFee, initialPerformanceFee, owner); + } + + // Test the constructor with an invalid max fee + function test_ConstructorWhenPassingInvalidMaxFee( + uint256 invalidFee + ) public { + vm.assume(invalidFee > grateful.MAX_FEE()); + vm.expectRevert(abi.encodeWithSelector(IGrateful.Grateful_FeeRateTooHigh.selector)); + grateful = new Grateful(tokens, IPool(address(aavePool)), invalidFee, initialPerformanceFee, owner); + } + + // Test the constructor with an invalid max performance fee + function test_ConstructorWhenPassingInvalidMaxPerformanceFee( + uint256 invalidPerformanceFee + ) public { + vm.assume(invalidPerformanceFee > grateful.MAX_PERFORMANCE_FEE()); + vm.expectRevert(abi.encodeWithSelector(IGrateful.Grateful_FeeRateTooHigh.selector)); + grateful = new Grateful(tokens, IPool(address(aavePool)), initialFee, invalidPerformanceFee, owner); + } +} diff --git a/test/unit/Grateful.t.sol b/test/unit/Grateful.t.sol deleted file mode 100644 index 84ed341..0000000 --- a/test/unit/Grateful.t.sol +++ /dev/null @@ -1,344 +0,0 @@ -// SPDX-License-Identifier: MIT -pragma solidity 0.8.26; - -// Forge standard library imports for testing -import {Test} from "forge-std/Test.sol"; -import {console} from "forge-std/console.sol"; - -// OpenZeppelin imports for ERC20 and contract utilities -import {IERC20} from "@openzeppelin/contracts/interfaces/IERC20.sol"; -import {SafeERC20} from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol"; - -// Solmate ERC20 import for vault creation -import {ERC20} from "solmate/tokens/ERC20.sol"; - -// Grateful contract and related interfaces -import {Grateful, IGrateful} from "contracts/Grateful.sol"; -import {AaveV3Vault} from "contracts/vaults/AaveV3Vault.sol"; - -// Mock contracts for testing -import {PoolMock} from "test/aave-v3/mocks/PoolMock.sol"; -import {RewardsControllerMock} from "test/aave-v3/mocks/RewardsControllerMock.sol"; -import {ERC20Mock} from "test/mocks/ERC20Mock.sol"; - -// Aave V3 interfaces -import {IPool, IRewardsController} from "yield-daddy/aave-v3/AaveV3ERC4626.sol"; - -contract UnitGrateful is Test { - using SafeERC20 for IERC20; - - /*////////////////////////////////////////////////////////////// - CONTRACTS & VARIABLES - //////////////////////////////////////////////////////////////*/ - - // Main contracts - Grateful public grateful; - ERC20Mock public token; - ERC20Mock public aToken; - ERC20Mock public aave; - PoolMock public aavePool; - AaveV3Vault public aaveVault; - RewardsControllerMock public rewardsController; - - // Addresses - address public owner = makeAddr("owner"); - address public merchant = makeAddr("merchant"); - address public user = makeAddr("user"); - - // Token and fee parameters - address[] public tokens; - uint256 public initialFee = 0.01 ether; // 1% - uint256 public initialPerformanceFee = 0.05 ether; // 5% - uint256 public tokenInitialSupply = 1_000_000 * 1e18; // 1 million tokens - - function setUp() public { - /*////////////////////////////////////////////////////////////// - DEPLOY MOCK TOKEN - //////////////////////////////////////////////////////////////*/ - - // Deploy mock ERC20 tokens - token = new ERC20Mock(); - aToken = new ERC20Mock(); - aave = new ERC20Mock(); - - // Label the token addresses for easier debugging - vm.label(address(token), "Mock Token"); - vm.label(address(aToken), "Mock AToken"); - vm.label(address(aave), "Mock Aave"); - - /*////////////////////////////////////////////////////////////// - DEPLOY AAVE MOCK CONTRACTS - //////////////////////////////////////////////////////////////*/ - - // Deploy a mock Aave V3 pool - aavePool = new PoolMock(); - - // Deploy a mock Rewards Controller with its own Aave token - rewardsController = new RewardsControllerMock(address(aave)); - - // Label the Aave pool and rewards controller addresses - vm.label(address(aavePool), "Aave Pool Mock"); - vm.label(address(rewardsController), "Rewards Controller Mock"); - - /*////////////////////////////////////////////////////////////// - DEPLOY GRATEFUL CONTRACT - //////////////////////////////////////////////////////////////*/ - - // Prepare the tokens array with the mock token address - tokens = new address[](1); - tokens[0] = address(token); - - // Deploy the Grateful contract - vm.startPrank(owner); - grateful = new Grateful(tokens, IPool(address(aavePool)), initialFee, initialPerformanceFee, owner); - - // Label the Grateful contract address - vm.label(address(grateful), "Grateful"); - - /*////////////////////////////////////////////////////////////// - DEPLOY AAVE V3 VAULT - //////////////////////////////////////////////////////////////*/ - - // Set reserve AToken in the mock pool - aavePool.setReserveAToken(address(token), address(aToken)); - - // Deploy the AaveV3Vault with the token, mock Aave pool, and rewards controller - aaveVault = new AaveV3Vault( - ERC20(address(token)), - ERC20(address(aToken)), - IPool(address(aavePool)), - owner, - IRewardsController(address(rewardsController)), - address(grateful) - ); - - // Label the AaveV3Vault address - vm.label(address(aaveVault), "AaveV3Vault"); - - /*////////////////////////////////////////////////////////////// - SETUP GRATEFUL CONTRACT - //////////////////////////////////////////////////////////////*/ - - // Add the AaveV3Vault to the Grateful contract - grateful.addVault(address(token), address(aaveVault)); - - // Stop acting as owner - vm.stopPrank(); - } - - /*////////////////////////////////////////////////////////////// - TEST FUNCTIONS - //////////////////////////////////////////////////////////////*/ - - /*////////////////////////////////////////////////////////////// - CONSTRUCTOR - //////////////////////////////////////////////////////////////*/ - - // Test the constructor with valid arguments - function test_ConstructorWhenPassingValidArgs() public { - // Deploy the Grateful contract - grateful = new Grateful(tokens, IPool(address(aavePool)), initialFee, initialPerformanceFee, owner); - - // Check that the Grateful contract is deployed correctly - assertEq(grateful.owner(), owner); - assertEq(address(grateful.aavePool()), address(aavePool)); - assertEq(grateful.fee(), initialFee); - assertEq(grateful.performanceFee(), initialPerformanceFee); - assertEq(grateful.tokensWhitelisted(address(token)), true); - } - - // Test the constructor with an invalid pool address - function test_ConstructorWhenPassingInvalidPoolAddress() public { - vm.expectRevert(abi.encodeWithSelector(IGrateful.Grateful_InvalidAddress.selector)); - grateful = new Grateful(tokens, IPool(address(0)), initialFee, initialPerformanceFee, owner); - } - - // Test the constructor with an invalid max fee - function test_ConstructorWhenPassingInvalidMaxFee( - uint256 invalidFee - ) public { - vm.assume(invalidFee > grateful.MAX_FEE()); - vm.expectRevert(abi.encodeWithSelector(IGrateful.Grateful_FeeRateTooHigh.selector)); - grateful = new Grateful(tokens, IPool(address(aavePool)), invalidFee, initialPerformanceFee, owner); - } - - // Test the constructor with an invalid max performance fee - function test_ConstructorWhenPassingInvalidMaxPerformanceFee( - uint256 invalidPerformanceFee - ) public { - vm.assume(invalidPerformanceFee > grateful.MAX_PERFORMANCE_FEE()); - vm.expectRevert(abi.encodeWithSelector(IGrateful.Grateful_FeeRateTooHigh.selector)); - grateful = new Grateful(tokens, IPool(address(aavePool)), initialFee, invalidPerformanceFee, owner); - } - - /*////////////////////////////////////////////////////////////// - TOKEN WHITELISTING - //////////////////////////////////////////////////////////////*/ - - // Test adding a token - function test_AddToken() public { - address tokenToAdd = address(new ERC20Mock()); - vm.prank(owner); - vm.expectEmit(true, true, true, true); - emit IGrateful.TokenAdded(tokenToAdd); - grateful.addToken(tokenToAdd); - assertTrue(grateful.tokensWhitelisted(tokenToAdd)); - } - - // Test removing a token - function test_RemoveToken() public { - address tokenToRemove = address(new ERC20Mock()); - vm.prank(owner); - grateful.addToken(tokenToRemove); - vm.prank(owner); - vm.expectEmit(true, true, true, true); - emit IGrateful.TokenRemoved(tokenToRemove); - grateful.removeToken(tokenToRemove); - assertFalse(grateful.tokensWhitelisted(tokenToRemove)); - } - - // Test adding a token with an invalid address - function test_AddTokenWithInvalidAddress() public { - vm.prank(owner); - vm.expectRevert(abi.encodeWithSelector(IGrateful.Grateful_InvalidAddress.selector)); - grateful.addToken(address(0)); - } - - // Test removing a token that is not whitelisted - function test_RemoveTokenNotWhitelisted() public { - address tokenToRemove = address(new ERC20Mock()); - vm.prank(owner); - vm.expectRevert(abi.encodeWithSelector(IGrateful.Grateful_TokenOrVaultNotFound.selector)); - grateful.removeToken(tokenToRemove); - } - - /*////////////////////////////////////////////////////////////// - VAULTS - //////////////////////////////////////////////////////////////*/ - - // Test adding a vault - function test_AddVault() public { - address newToken = address(new ERC20Mock()); - AaveV3Vault newVault = new AaveV3Vault( - ERC20(newToken), - ERC20(address(aToken)), - IPool(address(aavePool)), - owner, - IRewardsController(address(rewardsController)), - address(grateful) - ); - - vm.prank(owner); - grateful.addToken(newToken); - - vm.prank(owner); - vm.expectEmit(true, true, true, true); - emit IGrateful.VaultAdded(newToken, address(newVault)); - grateful.addVault(newToken, address(newVault)); - - assertEq(address(grateful.vaults(newToken)), address(newVault)); - } - - // Test adding a vault when token is not whitelisted - function test_AddVaultTokenNotWhitelisted() public { - address newToken = address(new ERC20Mock()); - AaveV3Vault newVault = new AaveV3Vault( - ERC20(newToken), - ERC20(address(aToken)), - IPool(address(aavePool)), - owner, - IRewardsController(address(rewardsController)), - address(grateful) - ); - - vm.prank(owner); - vm.expectRevert(abi.encodeWithSelector(IGrateful.Grateful_TokenNotWhitelisted.selector)); - grateful.addVault(newToken, address(newVault)); - } - - // Test removing a vault - function test_RemoveVault() public { - address newToken = address(new ERC20Mock()); - AaveV3Vault newVault = new AaveV3Vault( - ERC20(newToken), - ERC20(address(aToken)), - IPool(address(aavePool)), - owner, - IRewardsController(address(rewardsController)), - address(grateful) - ); - - vm.prank(owner); - grateful.addToken(newToken); - vm.prank(owner); - grateful.addVault(newToken, address(newVault)); - - vm.prank(owner); - vm.expectEmit(true, true, true, true); - emit IGrateful.VaultRemoved(newToken, address(newVault)); - grateful.removeVault(newToken); - - assertEq(address(grateful.vaults(newToken)), address(0)); - } - - // Test adding a vault with an invalid address - function test_AddVaultWithInvalidAddress() public { - address newToken = address(new ERC20Mock()); - vm.prank(owner); - grateful.addToken(newToken); - - vm.prank(owner); - vm.expectRevert(abi.encodeWithSelector(IGrateful.Grateful_InvalidAddress.selector)); - grateful.addVault(newToken, address(0)); - } - - // Test removing a vault that is not added - function test_RemoveVaultNotAdded() public { - address newToken = address(new ERC20Mock()); - vm.prank(owner); - grateful.addToken(newToken); - - vm.prank(owner); - vm.expectRevert(abi.encodeWithSelector(IGrateful.Grateful_TokenOrVaultNotFound.selector)); - grateful.removeVault(newToken); - } - - /*////////////////////////////////////////////////////////////// - FEES - //////////////////////////////////////////////////////////////*/ - - // Test setting the fee - function test_SetFee() public { - uint256 newFee = grateful.MAX_FEE() - 1; - vm.prank(owner); - grateful.setFee(newFee); - assertEq(grateful.fee(), newFee); - } - - // Test setting a custom fee - function test_SetCustomFee() public { - uint256 customFee = grateful.MAX_FEE() - 1; - vm.prank(owner); - grateful.setCustomFee(customFee, merchant); - - (bool isSet, uint256 fee) = grateful.customFees(merchant); - assertEq(isSet, true); - assertEq(fee, customFee); - } - - // Test setting the fee and reverting when the fee is too high - function test_SetFeeRevertsWhenFeeTooHigh() public { - uint256 invalidFee = grateful.MAX_FEE() + 1; - vm.prank(owner); - vm.expectRevert(abi.encodeWithSelector(IGrateful.Grateful_FeeRateTooHigh.selector)); - grateful.setFee(invalidFee); - } - - // Test setting a custom fee and reverting when the fee is too high - function test_SetCustomFeeRevertsWhenFeeTooHigh() public { - uint256 invalidCustomFee = grateful.MAX_FEE() + 1; - vm.prank(owner); - vm.expectRevert(abi.encodeWithSelector(IGrateful.Grateful_FeeRateTooHigh.selector)); - grateful.setCustomFee(invalidCustomFee, merchant); - } -} diff --git a/test/unit/TokenManagement.t.sol b/test/unit/TokenManagement.t.sol new file mode 100644 index 0000000..51095f9 --- /dev/null +++ b/test/unit/TokenManagement.t.sol @@ -0,0 +1,46 @@ +// SPDX-License-Identifier: MIT +pragma solidity 0.8.26; + +// Base test contract +import {UnitBase} from "./helpers/Base.t.sol"; + +// Mock ERC20 token +import {ERC20Mock} from "test/mocks/ERC20Mock.sol"; + +// Grateful contract and related interfaces +import {Grateful, IGrateful} from "contracts/Grateful.sol"; + +contract UnitTokenManagement is UnitBase { + function test_AddTokenSuccess() public { + address tokenToAdd = address(new ERC20Mock()); + vm.prank(owner); + vm.expectEmit(true, true, true, true); + emit IGrateful.TokenAdded(tokenToAdd); + grateful.addToken(tokenToAdd); + assertTrue(grateful.tokensWhitelisted(tokenToAdd)); + } + + function test_AddTokenInvalidAddress() public { + vm.prank(owner); + vm.expectRevert(IGrateful.Grateful_InvalidAddress.selector); + grateful.addToken(address(0)); + } + + function test_RemoveTokenSuccess() public { + address tokenToRemove = address(new ERC20Mock()); + vm.prank(owner); + grateful.addToken(tokenToRemove); + vm.prank(owner); + vm.expectEmit(true, true, true, true); + emit IGrateful.TokenRemoved(tokenToRemove); + grateful.removeToken(tokenToRemove); + assertFalse(grateful.tokensWhitelisted(tokenToRemove)); + } + + function test_RemoveTokenNotWhitelisted() public { + address tokenToRemove = address(new ERC20Mock()); + vm.prank(owner); + vm.expectRevert(IGrateful.Grateful_TokenNotWhitelisted.selector); + grateful.removeToken(tokenToRemove); + } +} diff --git a/test/unit/helpers/Base.t.sol b/test/unit/helpers/Base.t.sol new file mode 100644 index 0000000..77f083f --- /dev/null +++ b/test/unit/helpers/Base.t.sol @@ -0,0 +1,151 @@ +// SPDX-License-Identifier: MIT +pragma solidity 0.8.26; + +// Forge standard library imports for testing +import {Test} from "forge-std/Test.sol"; +import {console} from "forge-std/console.sol"; + +// OpenZeppelin imports for ERC20 and contract utilities +import {IERC20} from "@openzeppelin/contracts/interfaces/IERC20.sol"; +import {SafeERC20} from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol"; + +// Solmate ERC20 import for vault creation +import {ERC20} from "solmate/tokens/ERC20.sol"; + +// Grateful contract and related interfaces +import {Grateful, IGrateful} from "contracts/Grateful.sol"; +import {AaveV3Vault} from "contracts/vaults/AaveV3Vault.sol"; + +// Mock contracts for testing +import {PoolMock} from "test/aave-v3/mocks/PoolMock.sol"; +import {RewardsControllerMock} from "test/aave-v3/mocks/RewardsControllerMock.sol"; +import {ERC20Mock} from "test/mocks/ERC20Mock.sol"; + +// Aave V3 interfaces +import {IPool, IRewardsController} from "yield-daddy/aave-v3/AaveV3ERC4626.sol"; + +contract UnitBase is Test { + using SafeERC20 for IERC20; + + /*////////////////////////////////////////////////////////////// + CONTRACTS & VARIABLES + //////////////////////////////////////////////////////////////*/ + + // Main contracts + Grateful internal grateful; + ERC20Mock internal token; + ERC20Mock internal aToken; + ERC20Mock internal aave; + PoolMock internal aavePool; + AaveV3Vault internal aaveVault; + RewardsControllerMock internal rewardsController; + + // Addresses + address internal owner = address(0x1); + address internal merchant = address(0x2); + address internal user = address(0x3); + + // Token and fee parameters + address[] internal tokens; + uint256 internal initialFee = 0.01 ether; // 1% + uint256 internal initialPerformanceFee = 0.05 ether; // 5% + uint256 internal tokenInitialSupply = 1_000_000 * 1e18; // 1 million tokens + + function setUp() public virtual { + /*////////////////////////////////////////////////////////////// + DEPLOY MOCK TOKENS + //////////////////////////////////////////////////////////////*/ + + // Deploy mock ERC20 tokens + token = new ERC20Mock(); + aToken = new ERC20Mock(); + aave = new ERC20Mock(); + + // Label the token addresses for easier debugging + vm.label(address(token), "Mock Token"); + vm.label(address(aToken), "Mock AToken"); + vm.label(address(aave), "Mock Aave"); + + /*////////////////////////////////////////////////////////////// + DEPLOY AAVE MOCK CONTRACTS + //////////////////////////////////////////////////////////////*/ + + // Deploy a mock Aave V3 pool + aavePool = new PoolMock(); + + // Deploy a mock Rewards Controller with its own Aave token + rewardsController = new RewardsControllerMock(address(aave)); + + // Label the Aave pool and rewards controller addresses + vm.label(address(aavePool), "Aave Pool Mock"); + vm.label(address(rewardsController), "Rewards Controller Mock"); + + /*////////////////////////////////////////////////////////////// + DEPLOY GRATEFUL CONTRACT + //////////////////////////////////////////////////////////////*/ + + // Prepare the tokens array with the mock token address + tokens = new address[](1); + tokens[0] = address(token); + + // Deploy the Grateful contract + vm.startPrank(owner); + grateful = new Grateful(tokens, IPool(address(aavePool)), initialFee, initialPerformanceFee, owner); + + // Label the Grateful contract address + vm.label(address(grateful), "Grateful"); + + /*////////////////////////////////////////////////////////////// + DEPLOY AND SETUP AAVE V3 VAULT + //////////////////////////////////////////////////////////////*/ + + // Set reserve AToken in the mock pool + aavePool.setReserveAToken(address(token), address(aToken)); + + // Deploy the AaveV3Vault with the token, mock Aave pool, and rewards controller + aaveVault = new AaveV3Vault( + ERC20(address(token)), + ERC20(address(aToken)), + IPool(address(aavePool)), + owner, + IRewardsController(address(rewardsController)), + address(grateful) + ); + + // Label the AaveV3Vault address + vm.label(address(aaveVault), "AaveV3Vault"); + + /*////////////////////////////////////////////////////////////// + SETUP GRATEFUL CONTRACT + //////////////////////////////////////////////////////////////*/ + + // Add the AaveV3Vault to the Grateful contract + grateful.addVault(address(token), address(aaveVault)); + + // Stop acting as owner + vm.stopPrank(); + } + + /*////////////////////////////////////////////////////////////// + HELPER FUNCTIONS + //////////////////////////////////////////////////////////////*/ + + function _deployNewTokenAndVault() internal returns (address newToken, AaveV3Vault newVault) { + newToken = address(new ERC20Mock()); + + // Deploy new AaveV3Vault for the new token + newVault = new AaveV3Vault( + ERC20(newToken), + ERC20(address(aToken)), + IPool(address(aavePool)), + owner, + IRewardsController(address(rewardsController)), + address(grateful) + ); + + // Set reserve AToken in the mock pool + aavePool.setReserveAToken(newToken, address(aToken)); + + return (newToken, newVault); + } +}