fix: minor

contracts/sample/helpers.sol

@@ -0,0 +1,56 @@
+pragma solidity ^0.7.6;
+pragma abicoder v2;
+
+import "./interface.sol";
+import {SqrtPriceMath} from "./libraries/SqrtPriceMath.sol";
+import "./libraries/TransferHelper.sol";
+
+abstract contract Helpers is ISwapRouter {
+    ISwapRouter router =
+        ISwapRouter(0xE592427A0AEce92De3Edee1F18E0157C05861564);
+
+    UniswapV3Pool state =
+        UniswapV3Pool(0xCEda10b4d3bdE429DdA3A6daB87b38360313CBdB);
+
+    uint24 public constant poolFee = 3000;
+
+    function getPriceLimit(
+        ISwapRouter.ExactInputSingleParams memory params,
+        bool zeroForOne
+    ) public returns (uint160) {
+        return (
+            SqrtPriceMath.getNextSqrtPriceFromInput(
+                state.slot0().sqrtPriceX96,
+                state.liquidity(),
+                params.amountIn,
+                zeroForOne
+            )
+        );
+    }
+
+    function approveTransfer(
+        ISwapRouter.ExactInputSingleParams memory params,
+        address sender,
+        address recipient
+    ) public {
+        TransferHelper.safeTransferFrom(
+            params.tokenIn,
+            sender,
+            recipient,
+            params.amountIn
+        );
+
+        TransferHelper.safeApprove(
+            params.tokenIn,
+            address(router),
+            params.amountIn
+        );
+    }
+
+    function getSingleInput(ISwapRouter.ExactInputSingleParams memory params)
+        public
+        returns (uint256)
+    {
+        return (uint256(router.exactInputSingle(params)));
+    }
+}

contracts/sample/interface.sol

@@ -0,0 +1,36 @@
+pragma solidity ^0.7.6;
+pragma abicoder v2;
+
+interface UniswapV3Pool {
+    struct Slot0 {
+        uint160 sqrtPriceX96;
+        int24 tick;
+        uint16 observationIndex;
+        uint16 observationCardinality;
+        uint16 observationCardinalityNext;
+        uint8 feeProtocol;
+        bool unlocked;
+    }
+
+    function liquidity() external view returns (uint128);
+
+    function slot0() external view returns (Slot0 memory);
+}
+
+interface ISwapRouter {
+    struct ExactInputSingleParams {
+        address tokenIn;
+        address tokenOut;
+        uint24 fee;
+        address recipient;
+        uint256 deadline;
+        uint256 amountIn;
+        uint256 amountOutMinimum;
+        uint160 sqrtPriceLimitX96;
+    }
+
+    function exactInputSingle(ExactInputSingleParams calldata params)
+        external
+        payable
+        returns (uint256 amountOut);
+}

contracts/sample/libraries/IERC20Minimal.sol

@@ -0,0 +1,61 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+pragma solidity >=0.5.0;
+
+/// @title Minimal ERC20 interface for Uniswap
+/// @notice Contains a subset of the full ERC20 interface that is used in Uniswap V3
+interface IERC20Minimal {
+    /// @notice Returns the balance of a token
+    /// @param account The account for which to look up the number of tokens it has, i.e. its balance
+    /// @return The number of tokens held by the account
+    function balanceOf(address account) external view returns (uint256);
+
+    /// @notice Transfers the amount of token from the `msg.sender` to the recipient
+    /// @param recipient The account that will receive the amount transferred
+    /// @param amount The number of tokens to send from the sender to the recipient
+    /// @return Returns true for a successful transfer, false for an unsuccessful transfer
+    function transfer(address recipient, uint256 amount)
+        external
+        returns (bool);
+
+    /// @notice Returns the current allowance given to a spender by an owner
+    /// @param owner The account of the token owner
+    /// @param spender The account of the token spender
+    /// @return The current allowance granted by `owner` to `spender`
+    function allowance(address owner, address spender)
+        external
+        view
+        returns (uint256);
+
+    /// @notice Sets the allowance of a spender from the `msg.sender` to the value `amount`
+    /// @param spender The account which will be allowed to spend a given amount of the owners tokens
+    /// @param amount The amount of tokens allowed to be used by `spender`
+    /// @return Returns true for a successful approval, false for unsuccessful
+    function approve(address spender, uint256 amount) external returns (bool);
+
+    /// @notice Transfers `amount` tokens from `sender` to `recipient` up to the allowance given to the `msg.sender`
+    /// @param sender The account from which the transfer will be initiated
+    /// @param recipient The recipient of the transfer
+    /// @param amount The amount of the transfer
+    /// @return Returns true for a successful transfer, false for unsuccessful
+    function transferFrom(
+        address sender,
+        address recipient,
+        uint256 amount
+    ) external returns (bool);
+
+    /// @notice Event emitted when tokens are transferred from one address to another, either via `#transfer` or `#transferFrom`.
+    /// @param from The account from which the tokens were sent, i.e. the balance decreased
+    /// @param to The account to which the tokens were sent, i.e. the balance increased
+    /// @param value The amount of tokens that were transferred
+    event Transfer(address indexed from, address indexed to, uint256 value);
+
+    /// @notice Event emitted when the approval amount for the spender of a given owner's tokens changes.
+    /// @param owner The account that approved spending of its tokens
+    /// @param spender The account for which the spending allowance was modified
+    /// @param value The new allowance from the owner to the spender
+    event Approval(
+        address indexed owner,
+        address indexed spender,
+        uint256 value
+    );
+}

contracts/sample/libraries/TransferHelper.sol

@@ -1,13 +1,37 @@
 // SPDX-License-Identifier: GPL-2.0-or-later
 pragma solidity >=0.6.0;
 
-import '../interfaces/IERC20Minimal.sol';
+import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
 
-/// @title TransferHelper
-/// @notice Contains helper methods for interacting with ERC20 tokens that do not consistently return true/false
 library TransferHelper {
+    /// @notice Transfers tokens from the targeted address to the given destination
+    /// @notice Errors with 'STF' if transfer fails
+    /// @param token The contract address of the token to be transferred
+    /// @param from The originating address from which the tokens will be transferred
+    /// @param to The destination address of the transfer
+    /// @param value The amount to be transferred
+    function safeTransferFrom(
+        address token,
+        address from,
+        address to,
+        uint256 value
+    ) internal {
+        (bool success, bytes memory data) = token.call(
+            abi.encodeWithSelector(
+                IERC20.transferFrom.selector,
+                from,
+                to,
+                value
+            )
+        );
+        require(
+            success && (data.length == 0 || abi.decode(data, (bool))),
+            "STF"
+        );
+    }
+
     /// @notice Transfers tokens from msg.sender to a recipient
-    /// @dev Calls transfer on token contract, errors with TF if transfer fails
+    /// @dev Errors with ST if transfer fails
     /// @param token The contract address of the token which will be transferred
     /// @param to The recipient of the transfer
     /// @param value The value of the transfer
@@ -16,8 +40,40 @@ library TransferHelper {
         address to,
         uint256 value
     ) internal {
-        (bool success, bytes memory data) =
-            token.call(abi.encodeWithSelector(IERC20Minimal.transfer.selector, to, value));
-        require(success && (data.length == 0 || abi.decode(data, (bool))), 'TF');
+        (bool success, bytes memory data) = token.call(
+            abi.encodeWithSelector(IERC20.transfer.selector, to, value)
+        );
+        require(
+            success && (data.length == 0 || abi.decode(data, (bool))),
+            "ST"
+        );
+    }
+
+    /// @notice Approves the stipulated contract to spend the given allowance in the given token
+    /// @dev Errors with 'SA' if transfer fails
+    /// @param token The contract address of the token to be approved
+    /// @param to The target of the approval
+    /// @param value The amount of the given token the target will be allowed to spend
+    function safeApprove(
+        address token,
+        address to,
+        uint256 value
+    ) internal {
+        (bool success, bytes memory data) = token.call(
+            abi.encodeWithSelector(IERC20.approve.selector, to, value)
+        );
+        require(
+            success && (data.length == 0 || abi.decode(data, (bool))),
+            "SA"
+        );
+    }
+
+    /// @notice Transfers ETH to the recipient address
+    /// @dev Fails with `STE`
+    /// @param to The destination of the transfer
+    /// @param value The value to be transferred
+    function safeTransferETH(address to, uint256 value) internal {
+        (bool success, ) = to.call{value: value}(new bytes(0));
+        require(success, "STE");
     }
 }

contracts/sample/main.sol

@@ -0,0 +1,32 @@
+pragma solidity ^0.7.6;
+pragma abicoder v2;
+
+import "./helpers.sol";
+import "./interface.sol";
+
+abstract contract uniswapSample is Helpers {
+    function sell(
+        ISwapRouter.ExactInputSingleParams memory params,
+        bool zeroForOne
+    ) public returns (uint256 amountOut) {
+        approveTransfer(params, msg.sender, address(this));
+
+        ISwapRouter.ExactInputSingleParams memory params1 = ISwapRouter
+            .ExactInputSingleParams({
+                tokenIn: params.tokenIn,
+                tokenOut: params.tokenOut,
+                fee: poolFee,
+                recipient: address(this),
+                deadline: block.timestamp + 1,
+                amountIn: params.amountIn,
+                amountOutMinimum: 0,
+                sqrtPriceLimitX96: getPriceLimit(params, true)
+            });
+
+        amountOut = getSingleInput(params1);
+    }
+}
+
+abstract contract UniswapArbitrum is uniswapSample {
+    string public constant name = "UniswapSample-v1";
+}

contracts/sample/uniswap-sample.sol

@@ -1,92 +0,0 @@
-pragma solidity ^0.7.6;
-pragma abicoder v2;
-
-import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
-import "./libraries/SqrtPriceMath.sol";
-
-interface UniswapV3Pool {
-    struct Slot0 {
-        uint160 sqrtPriceX96;
-        int24 tick;
-        uint16 observationIndex;
-        uint16 observationCardinality;
-        uint16 observationCardinalityNext;
-        uint8 feeProtocol;
-        bool unlocked;
-    }
-
-    function liquidity() external view returns (uint128);
-
-    function slot0() external view returns (Slot0);
-}
-
-interface ISwapRouter {
-    struct ExactInputSingleParams {
-        address tokenIn;
-        address tokenOut;
-        uint24 fee;
-        address recipient;
-        uint256 deadline;
-        uint256 amountIn;
-        uint256 amountOutMinimum;
-        uint160 sqrtPriceLimitX96;
-    }
-
-    function exactInputSingle(ExactInputSingleParams calldata params)
-        external
-        payable
-        returns (uint256 amountOut);
-}
-
-contract uniswapSample {
-    ISwapRouter router =
-        ISwapRouter(0xE592427A0AEce92De3Edee1F18E0157C05861564);
-
-    UniswapV3Pool state =
-        UniswapV3Pool(0xCEda10b4d3bdE429DdA3A6daB87b38360313CBdB);
-    uint24 public constant poolFee = 3000;
-
-    function getPriceLimit(
-        ISwapRouter.ExactInputSingleParams params,
-        bool zeroForOne
-    ) public returns (uint160) {
-        return (
-            getNextSqrtPriceFromInput(
-                state.slot0().sqrtPriceX96,
-                state.liquidity(),
-                params.amountIn,
-                zeroForOne
-            )
-        );
-    }
-
-    function sell(ISwapRouter.ExactInputSingleParams params, bool zeroForOne) {
-        TransferHelper.safeTransferFrom(
-            params.tokenIn,
-            msg.sender,
-            address(this),
-            params.amountIn
-        );
-
-        TransferHelper.safeApprove(
-            params.tokenIn,
-            address(swapRouter),
-            params.amountIn
-        );
-
-        ISwapRouter.ExactInputSingleParams memory params1 = ISwapRouter
-            .ExactInputSingleParams({
-                tokenIn: params.tokenIn
-                tokenOut: params.tokenOut,
-                fee: poolFee,
-                recipient: address(this),
-                deadline: block.timestamp + 1,
-                amountIn: params.amountIn,
-                amountOutMinimum: 0,
-                sqrtPriceLimitX96: getPriceLimit(params, true)
-            });
-
-        amountOut = swapRouter.exactInputSingle(params1);
-        return (amountOut);
-    }
-}

hardhat.config.js

@@ -44,21 +44,6 @@ module.exports = {
     ],
   },
   networks: {
-    kovan: {
-      url: `https://eth-kovan.alchemyapi.io/v2/${ALCHEMY_ID}`,
-      accounts: [`0x${PRIVATE_KEY}`],
-    },
-    mainnet: {
-      url: `https://eth-mainnet.alchemyapi.io/v2/${ALCHEMY_ID}`,
-      accounts: [`0x${PRIVATE_KEY}`],
-      timeout: 150000,
-      gasPrice: parseInt(utils.parseUnits("30", "gwei")),
-    },
-    rinkeby: {
-      url: `https://eth-rinkeby.alchemyapi.io/v2/${ALCHEMY_ID}`,
-      accounts: [`0x${PRIVATE_KEY}`],
-      timeout: 150000,
-    },
     hardhat: {
       forking: {
         url: `https://eth-mainnet.alchemyapi.io/v2/${ALCHEMY_ID}`,
@@ -66,26 +51,6 @@ module.exports = {
       },
       blockGasLimit: 12000000,
     },
-    matic: {
-      url: "https://rpc-mainnet.maticvigil.com/",
-      accounts: [`0x${PRIVATE_KEY}`],
-      timeout: 150000,
-      gasPrice: parseInt(utils.parseUnits("1", "gwei")),
-    },
-    arbitrum: {
-      chainId: 42161,
-      url: `https://arb-mainnet.g.alchemy.com/v2/${ALCHEMY_ID}`,
-      accounts: [`0x${PRIVATE_KEY}`],
-      timeout: 150000,
-      gasPrice: parseInt(utils.parseUnits("2", "gwei")),
-    },
-    avax: {
-      url: 'https://api.avax.network/ext/bc/C/rpc',
-      chainId: 43114,
-      accounts: [`0x${PRIVATE_KEY}`],
-      timeout: 150000,
-      gasPrice: parseInt(utils.parseUnits("225", "gwei"))
-    }
   },
   etherscan: {
     apiKey: ETHERSCAN_API_KEY,
@@ -97,4 +62,4 @@ module.exports = {
   mocha: {
     timeout: 100 * 1000,
   },
-};
+};

test/sample/uniswap.js

@@ -0,0 +1,80 @@
+const { expect } = require("chai");
+const hre = require("hardhat");
+const { web3, deployments, waffle, ethers } = hre;
+const { provider, deployContract } = waffle;
+const deployAndEnableConnector = require("../../scripts/deployAndEnableConnector.js");
+const buildDSAv2 = require("../../scripts/buildDSAv2");
+const encodeSpells = require("../../scripts/encodeSpells.js");
+
+const addresses = require("../../scripts/constant/addresses");
+const abis = require("../../scripts/constant/abis");
+
+const FeeAmount = {
+  LOW: 500,
+  MEDIUM: 3000,
+  HIGH: 10000,
+};
+
+const TICK_SPACINGS = {
+  500: 10,
+  3000: 60,
+  10000: 200,
+};
+
+const USDT_ADDR = "0xdac17f958d2ee523a2206206994597c13d831ec7";
+const DAI_ADDR = "0x6b175474e89094c44da98b954eedeac495271d0f";
+
+describe("UniswapV3", function() {
+  const connectorName = "UniswapV3-v1";
+  let dsaWallet0;
+  let masterSigner;
+  let instaConnectorsV2;
+  let connector;
+  let nftManager;
+
+  const wallets = provider.getWallets();
+  const [wallet0, wallet1, wallet2, wallet3] = wallets;
+  before(async () => {
+    masterSigner = await getMasterSigner(wallet3);
+    instaConnectorsV2 = await ethers.getContractAt(
+      abis.core.connectorsV2,
+      addresses.core.connectorsV2
+    );
+    connector = await deployAndEnableConnector({
+      connectorName,
+      contractArtifact: connectV2UniswapV3Artifacts,
+      signer: masterSigner,
+      connectors: instaConnectorsV2,
+    });
+    console.log("Connector address", connector.address);
+  });
+
+  it("Should have contracts deployed.", async function() {
+    expect(!!instaConnectorsV2.address).to.be.true;
+    expect(!!connector.address).to.be.true;
+    expect(!!masterSigner.address).to.be.true;
+  });
+
+  describe("DSA wallet setup", function() {
+    it("Should build DSA v2", async function() {
+      dsaWallet0 = await buildDSAv2(wallet0.address);
+      expect(!!dsaWallet0.address).to.be.true;
+    });
+
+    it("Perfrom a swap", async function() {
+      await wallet0.sendTransaction({
+        to: dsaWallet0.address,
+        value: ethers.utils.parseEther("10"),
+      });
+      expect(await ethers.provider.getBalance(dsaWallet0.address)).to.be.gte(
+        ethers.utils.parseEther("10")
+      );
+
+      await addLiquidity(
+        "usdt",
+        dsaWallet0.address,
+        ethers.utils.parseEther("100000")
+      );
+    });
+  });
+});

test/uniswap/uniswap.test.js

@@ -1,335 +1,374 @@
 const { expect } = require("chai");
 const hre = require("hardhat");
 const { web3, deployments, waffle, ethers } = hre;
-const { provider, deployContract } = waffle
+const { provider, deployContract } = waffle;
 
-const deployAndEnableConnector = require("../../scripts/deployAndEnableConnector.js")
-const buildDSAv2 = require("../../scripts/buildDSAv2")
-const encodeSpells = require("../../scripts/encodeSpells.js")
-const encodeFlashcastData = require("../../scripts/encodeFlashcastData.js")
-const getMasterSigner = require("../../scripts/getMasterSigner")
+const deployAndEnableConnector = require("../../scripts/deployAndEnableConnector.js");
+const buildDSAv2 = require("../../scripts/buildDSAv2");
+const encodeSpells = require("../../scripts/encodeSpells.js");
+const encodeFlashcastData = require("../../scripts/encodeFlashcastData.js");
+const getMasterSigner = require("../../scripts/getMasterSigner");
 const addLiquidity = require("../../scripts/addLiquidity");
 
 const addresses = require("../../scripts/constant/addresses");
 const abis = require("../../scripts/constant/abis");
 const constants = require("../../scripts/constant/constant");
 const tokens = require("../../scripts/constant/tokens");
-const { abi: nftManagerAbi } = require("@uniswap/v3-periphery/artifacts/contracts/NonfungiblePositionManager.sol/NonfungiblePositionManager.json")
+const {
+  abi: nftManagerAbi,
+} = require("@uniswap/v3-periphery/artifacts/contracts/NonfungiblePositionManager.sol/NonfungiblePositionManager.json");
 
 const connectV2UniswapV3Artifacts = require("../../artifacts/contracts/mainnet/connectors/uniswap/v3/main.sol/ConnectV2UniswapV3.json");
 const { eth } = require("../../scripts/constant/tokens");
 const { BigNumber } = require("ethers");
 
 const FeeAmount = {
-    LOW: 500,
-    MEDIUM: 3000,
-    HIGH: 10000,
-}
+  LOW: 500,
+  MEDIUM: 3000,
+  HIGH: 10000,
+};
 
 const TICK_SPACINGS = {
-    500: 10,
-    3000: 60,
-    10000: 200
-}
+  500: 10,
+  3000: 60,
+  10000: 200,
+};
 
-const USDT_ADDR = "0xdac17f958d2ee523a2206206994597c13d831ec7"
-const DAI_ADDR = "0x6b175474e89094c44da98b954eedeac495271d0f"
+const USDT_ADDR = "0xdac17f958d2ee523a2206206994597c13d831ec7";
+const DAI_ADDR = "0x6b175474e89094c44da98b954eedeac495271d0f";
 
-let tokenIds = []
-let liquidities = []
-const abiCoder = ethers.utils.defaultAbiCoder
+let tokenIds = [];
+let liquidities = [];
+const abiCoder = ethers.utils.defaultAbiCoder;
 
-describe("UniswapV3", function () {
-    const connectorName = "UniswapV3-v1"
+describe("UniswapV3", function() {
+  const connectorName = "UniswapV3-v1";
 
-    let dsaWallet0
-    let masterSigner;
-    let instaConnectorsV2;
-    let connector;
-    let nftManager;
+  let dsaWallet0;
+  let masterSigner;
+  let instaConnectorsV2;
+  let connector;
+  let nftManager;
 
-    const wallets = provider.getWallets()
-    const [wallet0, wallet1, wallet2, wallet3] = wallets
-    before(async () => {
-        await hre.network.provider.request({
-            method: "hardhat_reset",
-            params: [
-                {
-                    forking: {
-                        jsonRpcUrl: hre.config.networks.hardhat.forking.url,
-                        blockNumber: 13005785,
-                    },
-                },
-            ],
-        });
-        masterSigner = await getMasterSigner(wallet3)
-        instaConnectorsV2 = await ethers.getContractAt(abis.core.connectorsV2, addresses.core.connectorsV2);
-        nftManager = await ethers.getContractAt(nftManagerAbi, "0xC36442b4a4522E871399CD717aBDD847Ab11FE88");
-        connector = await deployAndEnableConnector({
-            connectorName,
-            contractArtifact: connectV2UniswapV3Artifacts,
-            signer: masterSigner,
-            connectors: instaConnectorsV2
-        })
-        console.log("Connector address", connector.address)
-    })
+  const wallets = provider.getWallets();
+  const [wallet0, wallet1, wallet2, wallet3] = wallets;
+  before(async () => {
+    await hre.network.provider.request({
+      method: "hardhat_reset",
+      params: [
+        {
+          forking: {
+            jsonRpcUrl: hre.config.networks.hardhat.forking.url,
+            blockNumber: 13005785,
+          },
+        },
+      ],
+    });
+    masterSigner = await getMasterSigner(wallet3);
+    instaConnectorsV2 = await ethers.getContractAt(
+      abis.core.connectorsV2,
+      addresses.core.connectorsV2
+    );
+    nftManager = await ethers.getContractAt(
+      nftManagerAbi,
+      "0xC36442b4a4522E871399CD717aBDD847Ab11FE88"
+    );
+    connector = await deployAndEnableConnector({
+      connectorName,
+      contractArtifact: connectV2UniswapV3Artifacts,
+      signer: masterSigner,
+      connectors: instaConnectorsV2,
+    });
+    console.log("Connector address", connector.address);
+  });
 
-    it("Should have contracts deployed.", async function () {
-        expect(!!instaConnectorsV2.address).to.be.true;
-        expect(!!connector.address).to.be.true;
-        expect(!!masterSigner.address).to.be.true;
+  it("Should have contracts deployed.", async function() {
+    expect(!!instaConnectorsV2.address).to.be.true;
+    expect(!!connector.address).to.be.true;
+    expect(!!masterSigner.address).to.be.true;
+  });
+
+  describe("DSA wallet setup", function() {
+    it("Should build DSA v2", async function() {
+      dsaWallet0 = await buildDSAv2(wallet0.address);
+      expect(!!dsaWallet0.address).to.be.true;
     });
 
-    describe("DSA wallet setup", function () {
-        it("Should build DSA v2", async function () {
-            dsaWallet0 = await buildDSAv2(wallet0.address)
-            expect(!!dsaWallet0.address).to.be.true;
-        });
+    it("Deposit ETH & DAI into DSA wallet", async function() {
+      await wallet0.sendTransaction({
+        to: dsaWallet0.address,
+        value: ethers.utils.parseEther("10"),
+      });
+      expect(await ethers.provider.getBalance(dsaWallet0.address)).to.be.gte(
+        ethers.utils.parseEther("10")
+      );
 
-        it("Deposit ETH & DAI into DSA wallet", async function () {
-            await wallet0.sendTransaction({
-                to: dsaWallet0.address,
-                value: ethers.utils.parseEther("10")
-            });
-            expect(await ethers.provider.getBalance(dsaWallet0.address)).to.be.gte(ethers.utils.parseEther("10"));
-
-            await addLiquidity("dai", dsaWallet0.address, ethers.utils.parseEther("100000"));
-        });
-
-        it("Deposit ETH & USDT into DSA wallet", async function () {
-            await wallet0.sendTransaction({
-                to: dsaWallet0.address,
-                value: ethers.utils.parseEther("10")
-            });
-            expect(await ethers.provider.getBalance(dsaWallet0.address)).to.be.gte(ethers.utils.parseEther("10"));
-
-            await addLiquidity("usdt", dsaWallet0.address, ethers.utils.parseEther("100000"));
-        });
+      await addLiquidity(
+        "dai",
+        dsaWallet0.address,
+        ethers.utils.parseEther("100000")
+      );
     });
 
-    describe("Main", function () {
+    it("Deposit ETH & USDT into DSA wallet", async function() {
+      await wallet0.sendTransaction({
+        to: dsaWallet0.address,
+        value: ethers.utils.parseEther("10"),
+      });
+      expect(await ethers.provider.getBalance(dsaWallet0.address)).to.be.gte(
+        ethers.utils.parseEther("10")
+      );
 
-        it("Should mint successfully", async function () {
-            const ethAmount = ethers.utils.parseEther("0.1") // 1 ETH
-            const daiAmount = ethers.utils.parseEther("400") // 1 ETH
-            const usdtAmount = ethers.utils.parseEther("400") / Math.pow(10, 12) // 1 ETH
-            const ethAddress = "0xeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee"
+      await addLiquidity(
+        "usdt",
+        dsaWallet0.address,
+        ethers.utils.parseEther("100000")
+      );
+    });
+  });
 
-            const getIds = ["0", "0"]
-            const setId = "0"
+  describe("Main", function() {
+    it("Should mint successfully", async function() {
+      const ethAmount = ethers.utils.parseEther("0.1"); // 1 ETH
+      const daiAmount = ethers.utils.parseEther("400"); // 1 ETH
+      const usdtAmount = ethers.utils.parseEther("400") / Math.pow(10, 12); // 1 ETH
+      const ethAddress = "0xeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee";
 
-            const spells = [
-                {
-                    connector: connectorName,
-                    method: "mint",
-                    args: [
-                        ethAddress,
-                        DAI_ADDR,
-                        FeeAmount.MEDIUM,
-                        getMinTick(TICK_SPACINGS[FeeAmount.MEDIUM]),
-                        getMaxTick(TICK_SPACINGS[FeeAmount.MEDIUM]),
-                        ethAmount,
-                        daiAmount,
-                        "500000000000000000",
-                        getIds,
-                        setId
-                    ],
-                },
-                {
-                    connector: connectorName,
-                    method: "mint",
-                    args: [
-                        DAI_ADDR,
-                        USDT_ADDR,
-                        FeeAmount.MEDIUM,
-                        getMinTick(TICK_SPACINGS[FeeAmount.MEDIUM]),
-                        getMaxTick(TICK_SPACINGS[FeeAmount.MEDIUM]),
-                        daiAmount,
-                        usdtAmount,
-                        "300000000000000000",
-                        getIds,
-                        setId
-                    ],
-                },
-                {
-                    connector: connectorName,
-                    method: "mint",
-                    args: [
-                        ethAddress,
-                        USDT_ADDR,
-                        FeeAmount.MEDIUM,
-                        getMinTick(TICK_SPACINGS[FeeAmount.MEDIUM]),
-                        getMaxTick(TICK_SPACINGS[FeeAmount.MEDIUM]),
-                        ethAmount,
-                        usdtAmount,
-                        "300000000000000000",
-                        getIds,
-                        setId
-                    ],
-                }
-            ]
+      const getIds = ["0", "0"];
+      const setId = "0";
 
-            const tx = await dsaWallet0.connect(wallet0).cast(...encodeSpells(spells), wallet1.address)
-            let receipt = await tx.wait()
-            let castEvent = new Promise((resolve, reject) => {
-                dsaWallet0.on('LogCast', (origin, sender, value, targetNames, targets, eventNames, eventParams, event) => {
-                    const params = abiCoder.decode(["uint256", "uint256", "uint256", "uint256", "int24", "int24"], eventParams[0]);
-                    const params1 = abiCoder.decode(["uint256", "uint256", "uint256", "uint256", "int24", "int24"], eventParams[2]);
-                    tokenIds.push(params[0]);
-                    tokenIds.push(params1[0]);
-                    liquidities.push(params[1]);
-                    event.removeListener();
+      const spells = [
+        {
+          connector: connectorName,
+          method: "mint",
+          args: [
+            ethAddress,
+            DAI_ADDR,
+            FeeAmount.MEDIUM,
+            getMinTick(TICK_SPACINGS[FeeAmount.MEDIUM]),
+            getMaxTick(TICK_SPACINGS[FeeAmount.MEDIUM]),
+            ethAmount,
+            daiAmount,
+            "500000000000000000",
+            getIds,
+            setId,
+          ],
+        },
+        {
+          connector: connectorName,
+          method: "mint",
+          args: [
+            DAI_ADDR,
+            USDT_ADDR,
+            FeeAmount.MEDIUM,
+            getMinTick(TICK_SPACINGS[FeeAmount.MEDIUM]),
+            getMaxTick(TICK_SPACINGS[FeeAmount.MEDIUM]),
+            daiAmount,
+            usdtAmount,
+            "300000000000000000",
+            getIds,
+            setId,
+          ],
+        },
+        {
+          connector: connectorName,
+          method: "mint",
+          args: [
+            ethAddress,
+            USDT_ADDR,
+            FeeAmount.MEDIUM,
+            getMinTick(TICK_SPACINGS[FeeAmount.MEDIUM]),
+            getMaxTick(TICK_SPACINGS[FeeAmount.MEDIUM]),
+            ethAmount,
+            usdtAmount,
+            "300000000000000000",
+            getIds,
+            setId,
+          ],
+        },
+      ];
 
-                    resolve({
-                        eventNames,
-                    });
-                });
+      const tx = await dsaWallet0
+        .connect(wallet0)
+        .cast(...encodeSpells(spells), wallet1.address);
+      let receipt = await tx.wait();
+      let castEvent = new Promise((resolve, reject) => {
+        dsaWallet0.on(
+          "LogCast",
+          (
+            origin,
+            sender,
+            value,
+            targetNames,
+            targets,
+            eventNames,
+            eventParams,
+            event
+          ) => {
+            const params = abiCoder.decode(
+              ["uint256", "uint256", "uint256", "uint256", "int24", "int24"],
+              eventParams[0]
+            );
+            const params1 = abiCoder.decode(
+              ["uint256", "uint256", "uint256", "uint256", "int24", "int24"],
+              eventParams[2]
+            );
+            tokenIds.push(params[0]);
+            tokenIds.push(params1[0]);
+            liquidities.push(params[1]);
+            event.removeListener();
 
-                setTimeout(() => {
-                    reject(new Error('timeout'));
-                }, 60000)
+            resolve({
+              eventNames,
             });
+          }
+        );
 
-            let event = await castEvent
+        setTimeout(() => {
+          reject(new Error("timeout"));
+        }, 60000);
+      });
 
-            const data = await nftManager.positions(tokenIds[0])
+      let event = await castEvent;
 
-            expect(data.liquidity).to.be.equals(liquidities[0]);
-        }).timeout(10000000000);
+      const data = await nftManager.positions(tokenIds[0]);
 
-        it("Should deposit successfully", async function () {
-            const daiAmount = ethers.utils.parseEther("400") // 1 ETH
-            const ethAmount = ethers.utils.parseEther("0.1") // 1 ETH
-            const usdtAmount = ethers.utils.parseEther("400") / Math.pow(10, 12) // 1 ETH
-            const ethAddress = "0xeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee"
+      expect(data.liquidity).to.be.equals(liquidities[0]);
+    }).timeout(10000000000);
 
-            const getIds = ["0", "0"]
-            const setId = "0"
+    it("Should deposit successfully", async function() {
+      const daiAmount = ethers.utils.parseEther("400"); // 1 ETH
+      const ethAmount = ethers.utils.parseEther("0.1"); // 1 ETH
+      const usdtAmount = ethers.utils.parseEther("400") / Math.pow(10, 12); // 1 ETH
+      const ethAddress = "0xeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee";
 
-            const spells = [
-                {
-                    connector: connectorName,
-                    method: "deposit",
-                    args: [
-                        tokenIds[0],
-                        daiAmount,
-                        ethAmount,
-                        "500000000000000000",
-                        getIds,
-                        setId
-                    ],
-                }
-            ]
+      const getIds = ["0", "0"];
+      const setId = "0";
 
-            const tx = await dsaWallet0.connect(wallet0).cast(...encodeSpells(spells), wallet1.address)
-            const receipt = await tx.wait()
+      const spells = [
+        {
+          connector: connectorName,
+          method: "deposit",
+          args: [
+            tokenIds[0],
+            daiAmount,
+            ethAmount,
+            "500000000000000000",
+            getIds,
+            setId,
+          ],
+        },
+      ];
 
-            let castEvent = new Promise((resolve, reject) => {
-                dsaWallet0.on('LogCast', (origin, sender, value, targetNames, targets, eventNames, eventParams, event) => {
-                    const params = abiCoder.decode(["uint256", "uint256", "uint256", "uint256"], eventParams[0]);
-                    liquidities[0] = liquidities[0].add(params[1]);
-                    event.removeListener();
+      const tx = await dsaWallet0
+        .connect(wallet0)
+        .cast(...encodeSpells(spells), wallet1.address);
+      const receipt = await tx.wait();
 
-                    resolve({
-                        eventNames,
-                    });
-                });
+      let castEvent = new Promise((resolve, reject) => {
+        dsaWallet0.on(
+          "LogCast",
+          (
+            origin,
+            sender,
+            value,
+            targetNames,
+            targets,
+            eventNames,
+            eventParams,
+            event
+          ) => {
+            const params = abiCoder.decode(
+              ["uint256", "uint256", "uint256", "uint256"],
+              eventParams[0]
+            );
+            liquidities[0] = liquidities[0].add(params[1]);
+            event.removeListener();
 
-                setTimeout(() => {
-                    reject(new Error('timeout'));
-                }, 60000)
+            resolve({
+              eventNames,
             });
+          }
+        );
 
-            let event = await castEvent
+        setTimeout(() => {
+          reject(new Error("timeout"));
+        }, 60000);
+      });
 
-            const data = await nftManager.positions(tokenIds[0])
-            expect(data.liquidity).to.be.equals(liquidities[0]);
-        })
+      let event = await castEvent;
 
-        it("Should withdraw successfully", async function () {
+      const data = await nftManager.positions(tokenIds[0]);
+      expect(data.liquidity).to.be.equals(liquidities[0]);
+    });
 
-            const getId = "0"
-            const setIds = ["0", "0"]
+    it("Should withdraw successfully", async function() {
+      const getId = "0";
+      const setIds = ["0", "0"];
 
-            const data = await nftManager.positions(tokenIds[0])
-            let data1 = await nftManager.positions(tokenIds[1])
+      const data = await nftManager.positions(tokenIds[0]);
+      let data1 = await nftManager.positions(tokenIds[1]);
 
-            const spells = [
-                {
-                    connector: connectorName,
-                    method: "withdraw",
-                    args: [
-                        tokenIds[0],
-                        data.liquidity,
-                        0,
-                        0,
-                        getId,
-                        setIds
-                    ],
-                },
-                {
-                    connector: connectorName,
-                    method: "withdraw",
-                    args: [
-                        0,
-                        data1.liquidity,
-                        0,
-                        0,
-                        getId,
-                        setIds
-                    ],
-                },
-            ]
+      const spells = [
+        {
+          connector: connectorName,
+          method: "withdraw",
+          args: [tokenIds[0], data.liquidity, 0, 0, getId, setIds],
+        },
+        {
+          connector: connectorName,
+          method: "withdraw",
+          args: [0, data1.liquidity, 0, 0, getId, setIds],
+        },
+      ];
 
-            const tx = await dsaWallet0.connect(wallet0).cast(...encodeSpells(spells), wallet1.address)
-            const receipt = await tx.wait()
+      const tx = await dsaWallet0
+        .connect(wallet0)
+        .cast(...encodeSpells(spells), wallet1.address);
+      const receipt = await tx.wait();
 
-            data1 = await nftManager.positions(tokenIds[1])
-            expect(data1.liquidity.toNumber()).to.be.equals(0);
-        })
+      data1 = await nftManager.positions(tokenIds[1]);
+      expect(data1.liquidity.toNumber()).to.be.equals(0);
+    });
 
-        it("Should collect successfully", async function () {
+    it("Should collect successfully", async function() {
+      const ethAmount = ethers.utils.parseEther("0.2"); // 1 ETH
+      const daiAmount = ethers.utils.parseEther("800"); // 1 ETH
+      const getIds = ["0", "0"];
+      const setIds = ["0", "0"];
 
-            const ethAmount = ethers.utils.parseEther("0.2") // 1 ETH
-            const daiAmount = ethers.utils.parseEther("800") // 1 ETH
-            const getIds = ["0", "0"]
-            const setIds = ["0", "0"]
+      const spells = [
+        {
+          connector: connectorName,
+          method: "collect",
+          args: [tokenIds[0], daiAmount, ethAmount, getIds, setIds],
+        },
+      ];
 
-            const spells = [
-                {
-                    connector: connectorName,
-                    method: "collect",
-                    args: [
-                        tokenIds[0],
-                        daiAmount,
-                        ethAmount,
-                        getIds,
-                        setIds
-                    ],
-                }
-            ]
+      const tx = await dsaWallet0
+        .connect(wallet0)
+        .cast(...encodeSpells(spells), wallet1.address);
+      const receipt = await tx.wait();
+    });
 
-            const tx = await dsaWallet0.connect(wallet0).cast(...encodeSpells(spells), wallet1.address)
-            const receipt = await tx.wait()
-        })
+    it("Should burn successfully", async function() {
+      const spells = [
+        {
+          connector: connectorName,
+          method: "burn",
+          args: [tokenIds[0]],
+        },
+      ];
 
-        it("Should burn successfully", async function () {
+      const tx = await dsaWallet0
+        .connect(wallet0)
+        .cast(...encodeSpells(spells), wallet1.address);
+      const receipt = await tx.wait();
+    });
+  });
+});
 
-            const spells = [
-                {
-                    connector: connectorName,
-                    method: "burn",
-                    args: [
-                        tokenIds[0]
-                    ],
-                }
-            ]
-
-            const tx = await dsaWallet0.connect(wallet0).cast(...encodeSpells(spells), wallet1.address)
-            const receipt = await tx.wait()
-        })
-    })
-})
-
-const getMinTick = (tickSpacing) => Math.ceil(-887272 / tickSpacing) * tickSpacing
-const getMaxTick = (tickSpacing) => Math.floor(887272 / tickSpacing) * tickSpacing
+const getMinTick = (tickSpacing) =>
+  Math.ceil(-887272 / tickSpacing) * tickSpacing;
+const getMaxTick = (tickSpacing) =>
+  Math.floor(887272 / tickSpacing) * tickSpacing;