NodeJS-for-Beginners/step5/tests/server.test.js

import supertest from 'supertest'
import { app } from '../server'
import { getById } from '../stores/whisper'
import { restoreDb, populateDb, getFixtures, ensureDbConnection, normalize, closeDbConnection } from './utils.js'

let whispers
let inventedId
let existingId
let firstUser
let secondUser

describe('Server', () => {
  beforeAll(ensureDbConnection)
  beforeEach(async () => {
    await restoreDb()
    await populateDb(whispers)
    const fixtures = await getFixtures()
    whispers = fixtures.whispers
    inventedId = fixtures.inventedId
    existingId = fixtures.existingId
    firstUser = fixtures.firstUser
    secondUser = fixtures.secondUser
  })
  afterAll(closeDbConnection)
  describe('GET /login', () => {
    it('Should return a 200 with a login page', async () => {
      const response = await supertest(app).get('/login')
      expect(response.status).toBe(200)
      expect(response.text).toContain('Welcome Back!')
    })
  })
  describe('GET /signup', () => {
    it('Should return a 200 with a signup page', async () => {
      const response = await supertest(app).get('/signup')
      expect(response.status).toBe(200)
      expect(response.text).toContain('Create your account!')
    })
  })
  describe('POST /signup', () => {
    const newUser = {
      username: 'jane_doe2',
      password: '123456ASDasd@#',
      email: 'jane_doe2@demo.foo'
    }
    it('Should return a 400 when the body is empty', async () => {
      const response = await supertest(app)
        .post('/signup')
        .send({})
      expect(response.status).toBe(400)
    })
    it('Should return a 400 when the body is not completed', async () => {
      const response = await supertest(app)
        .post('/signup')
        .send({ username: newUser.username })
      expect(response.status).toBe(400)
      expect(response.body.error).toBe('User validation failed: password: Password is required, email: Email is required')
    })
    it('Should return a 400 when the password is weak', async () => {
      const response = await supertest(app)
        .post('/signup')
        .send({ ...newUser, password: 'weak' })
      expect(response.status).toBe(400)
      expect(response.body.error).toBe('User validation failed: password: Password must be at least 8 characters long')
    })
    it('Should return a 200 and a token when the user is created', async () => {
      const response = await supertest(app)
        .post('/signup')
        .send(newUser)

      expect(response.status).toBe(200)
      expect(response.body.accessToken).toBeDefined()
    })
  })
  describe('POST /login', () => {
    it('Should return a 400 when the body is empty', async () => {
      const response = await supertest(app)
        .post('/login')
        .send({})
      expect(response.status).toBe(400)
    })
    it('Should return a 400 when the body is not completed', async () => {
      const response = await supertest(app)
        .post('/login')
        .send({ username: 'jane_doe' })
      expect(response.status).toBe(400)
    })
    it('Should return a 400 when the user is not found', async () => {
      const response = await supertest(app)
        .post('/login')
        .send({ username: `${firstUser.username}_invented`, password: firstUser.password })
      expect(response.status).toBe(400)
    })
    it('Should return a 400 when the password is incorrect', async () => {
      const response = await supertest(app)
        .post('/login')
        .send({ username: firstUser.username, password: `${firstUser.password}_invented` })
      expect(response.status).toBe(400)
    })
    it('Should return a 200 and an accessToken when the user is created', async () => {
      const response = await supertest(app)
        .post('/login')
        .send({ username: firstUser.username, password: firstUser.password })
      expect(response.status).toBe(200)
      expect(response.body.accessToken).toBeDefined()
    })
  })
  describe('GET /about', () => {
    it('Should return a 200 with the total whispers in the platform', async () => {
      const response = await supertest(app)
        .get('/about')
        .set('Authentication', `Bearer ${firstUser.token}`)

      expect(response.status).toBe(200)
      expect(response.text).toContain(`Currently there are ${whispers.length} whispers available`)
    })
  })
  describe('GET /api/v1/whisper', () => {
    it('Should return a 401 when the user is not authenticated', async () => {
      const response = await supertest(app)
        .get('/api/v1/whisper')
      expect(response.status).toBe(401)
      expect(response.body.error).toBe('No token provided')
    })
    it("Should return an empty array when there's no data", async () => {
      await restoreDb() // empty the db
      const response = await supertest(app)
        .get('/api/v1/whisper')
        .set('Authentication', `Bearer ${firstUser.token}`)

      expect(response.status).toBe(200)
      expect(response.body).toEqual([])
    })
    it('Should return all the whispers', async () => {
      const response = await supertest(app)
        .get('/api/v1/whisper')
        .set('Authentication', `Bearer ${firstUser.token}`)

      expect(response.status).toBe(200)
      expect(response.body).toEqual(whispers)
    })
  })
  describe('GET /api/v1/whisper/:id', () => {
    it('Should return a 401 when the user is not authenticated', async () => {
      const response = await supertest(app)
        .get(`/api/v1/whisper/${existingId}`)
      expect(response.status).toBe(401)
      expect(response.body.error).toBe('No token provided')
    })
    it("Should return a 404 when the whisper doesn't exist", async () => {
      const response = await supertest(app)
        .get(`/api/v1/whisper/${inventedId}`)
        .set('Authentication', `Bearer ${firstUser.token}`)

      expect(response.status).toBe(404)
    })
    it('Should return a whisper details', async () => {
      const response = await supertest(app)
        .get(`/api/v1/whisper/${existingId}`)
        .set('Authentication', `Bearer ${firstUser.token}`)

      expect(response.status).toBe(200)
      expect(response.body).toEqual(whispers.find(w => w.id === existingId))
    })
  })
  describe('POST /api/v1/whisper', () => {
    it('Should return a 400 when the body is empty', async () => {
      const response = await supertest(app)
        .post('/api/v1/whisper')
        .set('Authentication', `Bearer ${firstUser.token}`)
        .send({})
      expect(response.status).toBe(400)
    })
    it('Should return a 400 when the body is invalid', async () => {
      const response = await supertest(app)
        .post('/api/v1/whisper')
        .set('Authentication', `Bearer ${firstUser.token}`)
        .send({ invented: 'This is a new whisper' })
      expect(response.status).toBe(400)
    })
    it('Should return a 401 when the user is not authenticated', async () => {
      const newWhisper = { message: 'This is a new whisper' }
      const response = await supertest(app)
        .post('/api/v1/whisper')
        .send({ message: newWhisper.message })

      expect(response.status).toBe(401)
      expect(response.body.error).toBe('No token provided')
    })
    it('Should return a 201 when the whisper is created', async () => {
      const newWhisper = { message: 'This is a new whisper' }
      const response = await supertest(app)
        .post('/api/v1/whisper')
        .set('Authentication', `Bearer ${firstUser.token}`)
        .send({ message: newWhisper.message })
      expect(response.status).toBe(201)
      expect(response.body.message).toEqual(newWhisper.message)

      // Database changes
      const storedWhisper = await getById(response.body.id)
      expect(normalize(storedWhisper).message).toStrictEqual(newWhisper.message)
    })
  })
  describe('PUT /api/v1/whisper/:id', () => {
    it('Should return a 400 when the body is empty', async () => {
      const response = await supertest(app)
        .put(`/api/v1/whisper/${existingId}`)
        .set('Authentication', `Bearer ${firstUser.token}`)
        .send({})
      expect(response.status).toBe(400)
    })
    it('Should return a 400 when the body is invalid', async () => {
      const response = await supertest(app)
        .put(`/api/v1/whisper/${existingId}`)
        .set('Authentication', `Bearer ${firstUser.token}`)
        .send({ invented: 'This a new field' })
      expect(response.status).toBe(400)
    })
    it("Should return a 404 when the whisper doesn't exist", async () => {
      const response = await supertest(app)
        .put(`/api/v1/whisper/${inventedId}`)
        .set('Authentication', `Bearer ${firstUser.token}`)
        .send({ message: 'Whisper updated' })
      expect(response.status).toBe(404)
    })
    it('Should return a 401 when the user is not authenticated', async () => {
      const response = await supertest(app)
        .put(`/api/v1/whisper/${existingId}`)
        .send({ message: 'Whisper updated' })

      expect(response.status).toBe(401)
      expect(response.body.error).toBe('No token provided')
    })

    it('Should return a 403 when the user is not the author', async () => {
      const response = await supertest(app)
        .put(`/api/v1/whisper/${existingId}`)
        .set('Authentication', `Bearer ${secondUser.token}`)
        .send({ message: 'Whisper updated' })

      expect(response.status).toBe(403)
    })
    it('Should return a 200 when the whisper is updated', async () => {
      const response = await supertest(app)
        .put(`/api/v1/whisper/${existingId}`)
        .set('Authentication', `Bearer ${firstUser.token}`)
        .send({ message: 'Whisper updated' })
      expect(response.status).toBe(200)

      // Database changes
      const storedWhisper = await getById(existingId)
      const normalizedWhisper = normalize(storedWhisper)
      expect(normalizedWhisper.id).toBe(existingId)
      expect(normalizedWhisper.message).toBe('Whisper updated')
    })
  })
  describe('DELETE /api/v1/whisper/:id', () => {
    it("Should return a 404 when the whisper doesn't exist", async () => {
      const response = await supertest(app)
        .delete(`/api/v1/whisper/${inventedId}`)
        .set('Authentication', `Bearer ${firstUser.token}`)
      expect(response.status).toBe(404)
    })
    it('Should return a 401 when the user is not authenticated', async () => {
      const response = await supertest(app)
        .delete(`/api/v1/whisper/${existingId}`)

      expect(response.status).toBe(401)
      expect(response.body.error).toBe('No token provided')
    })
    it('Should return a 403 when the user is not the author', async () => {
      const response = await supertest(app)
        .delete(`/api/v1/whisper/${existingId}`)
        .set('Authentication', `Bearer ${secondUser.token}`)

      expect(response.status).toBe(403)
    })

    it('Should return a 200 when the whisper is deleted', async () => {
      const response = await supertest(app)
        .delete(`/api/v1/whisper/${existingId}`)
        .set('Authentication', `Bearer ${firstUser.token}`)

      expect(response.status).toBe(200)

      // Database changes
      const storedWhisper = await getById(existingId)
      expect(storedWhisper).toBe(null)
    })
  })
})