dsa-connectors/test/mainnet/yearn/yearn.test.ts

import { expect } from "chai";
import hre from "hardhat";
const { web3, deployments, waffle, ethers } = hre;
const { provider, deployContract } = waffle;

import { deployAndEnableConnector } from "../../../scripts/tests/deployAndEnableConnector";
import { buildDSAv2 } from "../../../scripts/tests/buildDSAv2";
import { encodeSpells } from "../../../scripts/tests/encodeSpells";
import { getMasterSigner } from "../../../scripts/tests/getMasterSigner";

import addresses from "../../../scripts/constant/addresses";
import abis from "../../../scripts/constant/abis";
import { tokens } from "../../../scripts/constant/tokens";
import { Signer, Contract, BigNumber } from "ethers";

import { ConnectV2YearnV2__factory } from "../../../typechain";

const toBytes32 = (bn: BigNumber) => {
  return ethers.utils.hexlify(ethers.utils.zeroPad(bn.toHexString(), 32));
};

const setStorageAt = async (address: string, index: string, value: string) => {
  await ethers.provider.send("hardhat_setStorageAt", [address, index, value]);
  await ethers.provider.send("evm_mine", []); // Just mines to the next block
};

describe("Yearn", function() {
  const connectorName = "YEARN-TEST-A";

  let dsaWallet0: any;
  let masterSigner: Signer;
  let instaConnectorsV2: Contract;
  let connector: Contract;

  const wallets = provider.getWallets();
  const [wallet0, wallet1, wallet2, wallet3] = wallets;
  before(async () => {
    await hre.network.provider.request({
      method: "hardhat_reset",
      params: [
        {
          forking: {
            // @ts-ignore
            jsonRpcUrl: hre.config.networks.hardhat.forking.url,
            blockNumber: 12996975,
          },
        },
      ],
    });
    masterSigner = await getMasterSigner();
    instaConnectorsV2 = await ethers.getContractAt(
      abis.core.connectorsV2,
      addresses.mainnet.core.connectorsV2
    );
    connector = await deployAndEnableConnector({
      connectorName,
      contractArtifact: ConnectV2YearnV2__factory,
      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(!!(await masterSigner.getAddress())).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 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")
      );
    });
  });

  describe("Main", function() {
    it("Should increase the DAI balance to 100 DAI", async function() {
      const DAI = new ethers.Contract(
        tokens.dai.address,
        abis.basic.erc20,
        ethers.provider
      );
      const DAI_SLOT = 2;
      const locallyManipulatedBalance = ethers.utils.parseEther("100");

      // Get storage slot index
      const index = ethers.utils.solidityKeccak256(
        ["uint256", "uint256"],
        [dsaWallet0.address, DAI_SLOT]
      );
      // Manipulate local balance (needs to be bytes32 string)
      await setStorageAt(
        tokens.dai.address,
        index.toString(),
        toBytes32(locallyManipulatedBalance).toString()
      );

      // Get DAI balance
      const balance = await DAI.balanceOf(dsaWallet0.address);
      expect(
        await ethers.BigNumber.from(balance).eq(ethers.utils.parseEther("100"))
      );
    });

    it("Should deposit and withdraw 50 DAI in/out the Yearn Vault", async function() {
      const DAI = new ethers.Contract(
        tokens.dai.address,
        abis.basic.erc20,
        ethers.provider
      );
      const DAI_VAULT = "0xdA816459F1AB5631232FE5e97a05BBBb94970c95";
      const amount = ethers.utils.parseEther("50"); // 50 DAI
      const setId = "132456";
      const spells = [
        {
          connector: connectorName,
          method: "deposit",
          args: [DAI_VAULT, amount, 0, setId],
        },
        {
          connector: connectorName,
          method: "withdraw",
          args: [DAI_VAULT, amount, setId, 0],
        },
      ];

      const tx = await dsaWallet0
        .connect(wallet0)
        .cast(...encodeSpells(spells), wallet0.address);
      await tx.wait();

      // Get DAI balance
      const balance = await DAI.balanceOf(dsaWallet0.address);
      expect(
        await ethers.BigNumber.from(balance).eq(ethers.utils.parseEther("100"))
      );
    });

    it("Should deposit 70 DAI in the Yearn Vault", async function() {
      const DAI_VAULT = "0xdA816459F1AB5631232FE5e97a05BBBb94970c95";
      const DAI = new ethers.Contract(
        tokens.dai.address,
        abis.basic.erc20,
        ethers.provider
      );
      const YVDAI = new ethers.Contract(
        DAI_VAULT,
        abis.basic.erc20,
        ethers.provider
      );
      const amount = ethers.utils.parseEther("70"); // 70 DAI
      const setId = "568445";
      const spells = [
        {
          connector: connectorName,
          method: "deposit",
          args: [DAI_VAULT, amount, 0, setId],
        },
      ];

      const tx = await dsaWallet0
        .connect(wallet0)
        .cast(...encodeSpells(spells), wallet0.address);
      await tx.wait();

      // Get DAI balance
      const yvDAIBalance = await YVDAI.balanceOf(dsaWallet0.address);
      const daiBalance = await DAI.balanceOf(dsaWallet0.address);
      const correctDaiBalance = ethers.BigNumber.from(daiBalance).eq(
        ethers.utils.parseEther("30")
      );
      const correctYVDaiBalance = ethers.BigNumber.from(yvDAIBalance).lte(
        ethers.utils.parseEther("70")
      );
      expect(correctDaiBalance && correctYVDaiBalance);
    });
  });
});