Function fooInstance

test/genReqId.test.js:199–212

(instance, opts, next)

  }

  const fooInstance = function (instance, opts, next) {
    instance.register(bazInstance, { prefix: 'baz' })
    instance.register(barInstance, { prefix: 'bar' })

    instance.setGenReqId(function (req) {
      return 'foo'
    })

    instance.get('/', (req, reply) => {
      t.assert.ok(req.id)
      reply.send({ id: req.id })
    })
    next()
  }

  fastify.register(fooInstance, { prefix: 'foo' })