study-univ3-on-hardhat/test/BaseOperationTest.ts

import { web3 } from "hardhat";
import deployer from '../.secret'
import contracts from '../contracts'
import {default as WETH_ABI} from "../abi/WETH_ABI";

describe('Base operation test', () => {
  it('Parse ether test', async () => {
    console.log(web3.utils.toWei('1', 'gwei'))
  })

  it('Get block number test', async () => {
    console.log(await web3.eth.getBlockNumber())
  })

  it('Get balance test', async () => {
    console.log(await web3.eth.getBalance(deployer.address))
  })

  it('Transfer test', async () => {
    let rawTx = {
      from: deployer.address,
      nonce: await web3.eth.getTransactionCount(deployer.address),
      gasPrice: web3.utils.toWei('2', 'gwei'),
      gasLimit: 1_000_000,
      to: contracts.ZERO,
      value: 1e9
    }

    await web3.eth.sendTransaction(rawTx).then(console.log)
  })

  it('Weth withdraw test', async () => {
    const WETH_ABI = require('../abi/WETH_ABI').default
    const WETH_ADDR = contracts.WETH

    let weth_contract = new web3.eth.Contract(WETH_ABI, WETH_ADDR)
    // await weth_contract.methods.balanceOf(deployer.address).call().then(console.log)

    let rawTx = {
      from: deployer.address,
      nonce: await web3.eth.getTransactionCount(deployer.address),
      gasPrice: web3.utils.toWei('2', 'gwei'),
      gasLimit: 1_000_000
    }
    await weth_contract.methods.withdraw(1e15).send(rawTx).then(console.log)
  })

  it ('Weth approve test', async () => {
    const WETH_ABI = require('../abi/WETH_ABI').default
    const WETH_ADDR = contracts.WETH

    let weth_contract = new web3.eth.Contract(WETH_ABI, WETH_ADDR)
    // await weth_contract.methods.balanceOf(deployer.address).call().then(console.log)

    let rawTx = {
      from: deployer.address,
      nonce: await web3.eth.getTransactionCount(deployer.address),
      gasPrice: web3.utils.toWei('2', 'gwei'),
      gasLimit: 1_000_000
    }
    await weth_contract.methods.approve(contracts.UNIV3, 1e9).send(rawTx).then(console.log)
  })

  it('Univ3 swap test', async () => {
    const UNIV3_ABI = require('../abi/UNIV3_ABI').default

    let univ3_contract = new web3.eth.Contract(UNIV3_ABI, contracts.UNIV3)

    let rawTx = {
      from: deployer.address,
      nonce: await web3.eth.getTransactionCount(deployer.address),
      gasPrice: web3.utils.toWei('2', 'gwei'),
      gasLimit: 1_000_000
    }

    let amountIn = 1_000_000
    let amountOutMin = 1
    let path = [contracts.WETH, contracts.HEX]
    let to = deployer.address

    await univ3_contract.methods
        .swapExactTokensForTokens(amountIn, amountOutMin, path, to)
        .send(rawTx).then(console.log)
  })
})