const { expect } = require("chai"); const { ethers } = require("hardhat"); describe("Greeter", function () { it("Should return the new greeting once it's changed", async function () { const Greeter = await ethers.getContractFactory("Greeter"); const greeter = await Greeter.deploy("Hello, world!"); await greeter.deployed(); expect(await greeter.greet()).to.equal("Hello, world!"); const setGreetingTx = await greeter.setGreeting("Hola, mundo!"); // wait until the transaction is mined await setGreetingTx.wait(); expect(await greeter.greet()).to.equal("Hola, mundo!"); }); });