🔍 Testing & Auditing: Quality Assurance

// Hardhat test example
const { expect } = require("chai");

describe("Token", function() {
  let token, owner, addr1;
  
  beforeEach(async function() {
    [owner, addr1] = await ethers.getSigners();
    const Token = await ethers.getContractFactory("Token");
    token = await Token.deploy();
  });
  
  it("Should transfer tokens correctly", async function() {
    await token.transfer(addr1.address, 100);
    expect(await token.balanceOf(addr1.address)).to.equal(100);
  });
  
  it("Should revert on insufficient balance", async function() {
    await expect(
      token.connect(addr1).transfer(owner.address, 1)
    ).to.be.revertedWith("Insufficient balance");
  });
  
  it("Should emit Transfer event", async function() {
    await expect(token.transfer(addr1.address, 100))
      .to.emit(token, "Transfer")
      .withArgs(owner.address, addr1.address, 100);
  });
});