function sum(a, b) {
  return a + b
}

test('sum adds numbers', () => {
  expect(sum(1, 3)).toBe(4)
})

let api, server

beforeAll(async () => {
  server = await startServer()
  const {port} = server.address()
  api = axios.create({
    baseURL: `http://localhost:${port}/api`
  })
})

afterAll(() => server.close())

beforeEach(() => resetDb())

test('can register a user', async () => {
  const registerData = {username: 'bob', password: 'wiley'}
  const testUser = await api
    .post('auth/register', registerData)
    .then(response => response.data.user)
  expect(testUser.username).toBe(registerData.username)

  const readUserUnauthenticated = await api
    .get(`users/${testUser.id}`)
    .then(response => response.data.user)
  expect(readUserUnauthenticated).toEqual(testUser)
})

describe('authentication', () => {
  it('should allow users to register', () => {
    const user = {username: 'bob', password: 'wiley'}
    cy
      .visitApp()
      .getByTestId('register-link')
      .click()
      .getByTestId('username-input')
      .type(user.username)
      .getByTestId('password-input')
      .type(user.password)
      .getByTestId('login-submit')
      .click()

    cy
      .url()
      .should('equal', 'http://localhost:3000/')

    cy
      .getByTestId('username-display')
      .should('contain', user.username)
  })
})