expressjs endpoint testing with ava + supertest + @hapi/joi

test.js

const test = require('ava')
const request = require('supertest')
const app = require('../lib/infra')
const Joi = require('@hapi/joi')

const agent = request.agent(app)

test('main', async (t) => {
  const { body } = await agent.get('/')

  t.deepEqual(body, { api: 'v1' })
})

test('users / find', async (t) => {
  const responseSchema = Joi.object({
    data: Joi.array()
      .items(
        Joi.object({
          username: Joi.string()
        })
      )
      .required()
  })

  const { body } = await agent.get('/users')

  await responseSchema.validateAsync(body)

  t.pass()
})