Github

https://github.com/arnosolo/template1-express-ts

Docs

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• How to Setup Node.js with TypeScript in 2023 | Beyond Fireship

Add jest

1. Install jest

npm i supertest jest ts-jest @types/jest @types/supertest -D

2. Add jest.config.js file

npx ts-jest config:init

3. Rename jest.config.js as jest.config.cjs

/** @type {import('ts-jest').JestConfigWithTsJest} */
module.exports = {
  preset: 'ts-jest',
  testEnvironment: 'node',
  testMatch: ['**/**/*.test.ts'], // Test all files end with .test.ts
  verbose: true, // Print log of every test
  forceExit: true, // Always force exit test
};

3. Add test file src/__tests__/app.test.ts

import request from 'supertest'

describe('give a username and password', () => {
  test('should return true', async () => {
    expect(true).toBe(true)
  })
})

4. Add test cmd in package.json

"test": "jest"

5. Run test

npm run test

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