TypeScript Unit Testing?

NightCityRPNet · April 8, 2024, 4:13pm

Hello there, I was wondering if there is a convenient way to (unit) test nodejs scripts made in typescript? I’ve tinkered around with testing libraries, such as jest, but I had issues mocking natives. If anyone knows a solution to this, please let me know! It’s greatly appreciated.

Beke_Rugos · April 8, 2024, 5:34pm

Hey! You can mock natives in both jest and mocha. You just have to use the global prefix. for example:
global.PlayerPedId = () => 10
or if you want to spy on stuff (e.g using jest’s built in spies) you can do what you would regularly do.
let me find an example file real quick, will post it here.

Beke_Rugos · April 8, 2024, 5:35pm

gist.github.com

https://gist.github.com/wowjeeez/0fc09fb54a8c57e5a3775087c1837b55

test.ts

import { beforeEach, describe, expect, it, jest } from "@jest/globals";
import EventEmitter from "node:events";
import { ServerEventEngine } from "./event.engine";
import { block, SourceExtraData } from "@msfx/runtime";

describe("server event engine test", () => {
  const serverEmitter = new EventEmitter();
  const clientEmitter = new EventEmitter();
  beforeEach(() => {
    global.onNet = (eventName: string, handler: Function) =>

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