fastify-swagger/test/transform.js

Serve Swagger/OpenAPI documentation for Fastify, supporting dynamic generation

'use strict'

const { test } = require('tap')
const Fastify = require('fastify')
const fastifySwagger = require('../index')
const Joi = require('joi')
const Convert = require('joi-to-json')

const params = Joi
  .object()
  .keys({
    property: Joi.string().required()
  })
const opts = {
  schema: { params }
}
const convertible = ['params', 'body', 'querystring']
const valid = {
  transform: schema => Object.keys(schema).reduce((transformed, key) => {
    transformed[key] = convertible.includes(key)
      ? Convert(schema[key])
      : schema[key]
    return transformed
  },
  {})
}
const invalid = {
  transform: 'wrong type'
}
test('transform should fail with a value other than Function', t => {
  t.plan(2)
  const fastify = Fastify()

  fastify.register(fastifySwagger, invalid)

  fastify.setValidatorCompiler(({ schema }) => Joi.validate(schema))
  fastify.get('/example', opts, () => {})

  fastify.ready(err => {
    t.error(err)
    t.throws(fastify.swagger)
  })
})
test('transform should work with a Function', t => {
  t.plan(2)
  const fastify = Fastify()

  fastify.register(fastifySwagger, valid)

  fastify.setValidatorCompiler(({ schema }) => Joi.validate(schema))
  fastify.get('/example', opts, () => {})

  fastify.ready(err => {
    t.error(err)
    t.doesNotThrow(fastify.swagger)
  })
})