Supertest agent does not persist sessions

I have an Express 4 application that makes use of Passport with a LocalStrategy for authentication. Authentication is functional and works in the browser using a single connect.sid cookie as expected.

I make use of Ava for tests and would like to test authenticated endpoints. From reading documentation and other threads, I should be looking into Supertest Agents to persist the login information. I have come up with the following non-functional code.

test('booking api with auth using await', async t => {
  t.plan(2)

  const app = makeServer(t.context.config, t.context.connection)
  const server = await request.agent(app)
  const login = await server
    .post('/v2/auth/login')
    .send({ username: 'admin', password: 'password' })
    .expect('set-cookie', /connect.sid/)

  t.is(login.body.message, 'Logged in as admin') // Passes

  const GET = await server
    .get('/v2/Booking')

  t.is(GET.status, 200) // Actual: 403
})

test('booking api with auth using promises', async t => {
  t.plan(2)

  const app = makeServer(t.context.config, t.context.connection)
  const server = await request.agent(app)
  return server
    .post('/v2/auth/login')
    .send({ username: 'admin', password: 'password' })
    .expect('set-cookie', /connect.sid/)
    .then(res => {
      t.is(res.body.message, 'Logged in as admin') // Passes
      return server
        .get('/v2/Booking')
        .then(res => {
          t.is(res.status, 200) // Actual: 403
        })
    })
})

I have provided two samples in case it was an async-related issue. Among the other things I have tried is setting the cookie manually and using the done callback to reuse the agent. What else am I missing?

via timur