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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..

Regular expressions, often referred to as regex or regexp, are powerful tools for pattern matching and manipulating text in various programming languages, including JavaScript. A regular expression is a sequence of characters that defines a search pattern. It consists of a combination of ordinary characters and special characters (metacharacters) that have special meaning within the pattern. // ..