How to Make Authenticated Requests on Supertest

Use beforeEach funtion to create header with token to set for each test.

let headers
beforeEach(async () => {
  const newUser = {
    username: 'janedoez',
    name: 'Jane Z. Doe',
    password: 'password',
  }
  await api
    .post('/api/users')
    .send(newUser)
  const result = await api
    .post('/api/login')
    .send(newUser)
  headers = {
    'Authorization': `bearer ${result.body.token}`
  }
})

Then in each test, set header.

await api
  .post('/api/blogs')
  .send(newBlog)
  .set(headers)
  .expect(201)
  .expect('Content-Type', /application\/json/)

Source -> Supertest