ReasonJun

import { ethers } from "hardhat"; const contractAddress = "0x5FbDB2315678afecb367f032d93F642f64180aa3"; async function purchase(amount: number) { const VendingMachine = await ethers.getContractFactory("VendingMachine"); const vendingMachine = await VendingMachine.attach(contractAddress); const topic = [vendingMachine.filters.Purchase().topics!].toString(); const filter = { address: contractAddre..

import { loadFixture } from '@nomicfoundation/hardhat-network-helpers'; import { expect } from 'chai'; import { ethers } from 'hardhat'; describe('VendingMachine', function () { // We define a fixture to reuse the same setup in every test. // We use loadFixture to run this setup once, snapshot that state, // and reset Hardhat Network to that snapshot in every test. async function VendingMachineF..

import { loadFixture } from '@nomicfoundation/hardhat-network-helpers'; import { expect } from 'chai'; import { ethers } from 'hardhat'; describe('VendingMachine', function () { // We define a fixture to reuse the same setup in every test. // We use loadFixture to run this setup once, snapshot that state, // and reset Hardhat Network to that snapshot in every test. async function VendingMachineF..

import { ethers } from "hardhat"; describe("VendingMachine", function () { // We define a fixture to reuse the same setup in every test. // We use loadFixture to run this setup once, snapshot that state, // and reset Hardhat Network to that snapshot in every test. async function VendingMachineFixture() { // Contracts are deployed using the first signer/account by default const [owner, otherAccou..

import { ethers } from "hardhat"; async function main() { console.log('deploying vendingMachine contract') const VendingMachine = await ethers.getContractFactory("VendingMachine"); const vendingMachine = await VendingMachine.deploy(); await vendingMachine.deployed(); console.log(`vendingMachine contract is deployed to ${vendingMachine.address}`); } // We recommend this pattern to be able to use ..