dsa-connectors/test/0x/zeroEx.test.js

const { expect } = require("chai");
const hre = require("hardhat");
const axios = require("axios");
const { web3, deployments, waffle, ethers } = hre;
const { provider, deployContract } = waffle;
const BigNumber = require("bignumber.js");

const deployAndEnableConnector = require("../../scripts/deployAndEnableConnector.js");
const buildDSAv2 = require("../../scripts/buildDSAv2");
const encodeSpells = require("../../scripts/encodeSpells.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 connectV2CompoundArtifacts = require("../../artifacts/contracts/mainnet/connectors/0x/main.sol/ConnectV2ZeroEx.json");

describe("ZeroEx", function() {
  const connectorName = "zeroEx-test";

  let dsaWallet0;
  let masterSigner;
  let instaConnectorsV2;
  let connector;

  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: 13300000,
          },
        },
      ],
    });
    masterSigner = await getMasterSigner(wallet3);
    instaConnectorsV2 = await ethers.getContractAt(
      abis.core.connectorsV2,
      addresses.core.connectorsV2
    );
    connector = await deployAndEnableConnector({
      connectorName,
      contractArtifact: connectV2CompoundArtifacts,
      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("Deposit ETH into DSA wallet", async function() {
      await wallet0.sendTransaction({
        to: dsaWallet0.address,
        value: ethers.utils.parseEther("10"),
      });
      console.log(dsaWallet0.address);
      expect(await ethers.provider.getBalance(dsaWallet0.address)).to.be.gte(
        ethers.utils.parseEther("10")
      );
    });
  });

  describe("Main", function() {
    it("should swap", async function() {
      async function getArg() {
        const slippage = 0.5;

        /* Eth -> dai */
        const sellTokenAddress = "0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE"; // eth,  decimals 18
        const sellTokenDecimals = 18;
        const buyTokenAddress = "0x6b175474e89094c44da98b954eedeac495271d0f"; // dai, decimals 18
        const buyTokenDecimals = 18;
        const amount = 1;

        const srcAmount = new BigNumber(amount)
          .times(new BigNumber(10).pow(sellTokenDecimals))
          .toFixed(0);
        console.log(srcAmount);

        const fromAddress = dsaWallet0.address;

        let url = `https://api.0x.org/swap/v1/quote`;

        const params = {
          buyToken: "DAI",
          sellToken: "ETH",
          sellAmount: "1000000000000000000", // Always denominated in wei
        };

        const buyTokenAmount = await axios
          .get(url, { params: params })
          .then((data) => data.data.buyAmount);

        const calldata = await axios
          .get(url, { params: params })
          .then((data) => data.data.data);

        console.log(calldata);

        let caculateUnitAmt = () => {
          const buyTokenAmountRes = new BigNumber(buyTokenAmount)
            .dividedBy(new BigNumber(10).pow(buyTokenDecimals))
            .toFixed(8);

          let unitAmt = new BigNumber(buyTokenAmountRes).dividedBy(
            new BigNumber(amount)
          );

          unitAmt = unitAmt.multipliedBy((100 - 0.3) / 100);
          unitAmt = unitAmt.multipliedBy(1e18).toFixed(0);
          return unitAmt;
        };
        let unitAmt = caculateUnitAmt();

        console.log("unitAmt - " + unitAmt);

        return [
          buyTokenAddress,
          sellTokenAddress,
          srcAmount,
          unitAmt,
          calldata,
          0,
        ];
      }

      let arg = await getArg();
      const spells = [
        {
          connector: connectorName,
          method: "swap",
          args: arg,
        },
      ];
      const tx = await dsaWallet0
        .connect(wallet0)
        .cast(...encodeSpells(spells), wallet1.address);
      const receipt = await tx.wait();
      console.log(receipt);
      expect(await ethers.provider.getBalance(dsaWallet0.address)).to.be.lte(
        ethers.utils.parseEther("9")
      );
    });
  });
});