نحوه نوشتن تست با تایپ اسکریپت و شوخی

mkdir test
cd test

pnpm init

pnpm init -y

npm i jest typescript ts-jest ts-node @types/jest @types/node -D

pnpm add jest typescript ts-jest ts-node @types/jest @types/node -D

{
  "compilerOptions": {
    "target": "ES6",
    "module": "CommonJS",
    "outDir": "./dist",
    "rootDir": "./src"
  }
},
  "include": [
    "src"
  ]

pnpm create jest 

import type {Config} from 'jest';

  const config: Config = {
  collectCoverage: true,
  coverageProvider: "v8",
  preset: 'ts-jest',
  roots: [
     "<rootDir>"
   ],
  testEnvironment: "node",
  verbose: true,
  transform: {}
}

export function Sum(a: number, b: number): number {
  return a + b;
}

import { Sum} from "../src/operation";

describe("Math functions", () => {
  test("should add two numbers correctly", () => {
    expect(add(1, 2)).toEqual(3);
  });
});

"scripts": {
  "test": "jest"
}

npm run test

pnpm run test