alexa-verifier/test/fetch-cert.js

Verify HTTP requests sent to an Alexa skill are sent from Amazon

import fetchCert from '../fetch-cert.js'
import nock      from 'nock'
import { test }  from 'tap'
import url       from 'url'


const cert_url = url.parse('https://s3.amazonaws.com/echo.api/echo-api-cert.pem')

test('fetchCert should ignore response for error HTTP status', function (t) {
    const options = { url: cert_url }

    nock('https://s3.amazonaws.com').get(cert_url.path).reply(400, 'Bad Request')

    fetchCert(options, function (er, pem_cert) {
        t.not(er, undefined)
        t.equal(pem_cert, undefined)
        t.end()
    })
})


test('fetchCert should call back with response body for OK HTTP status', function (t) {
    const options = { url: cert_url }

    nock('https://s3.amazonaws.com').get(cert_url.path).reply(200, 'mock pem data')

    fetchCert(options, function (er, pem_cert) {
        t.equal(er, undefined)
        t.equal(pem_cert, 'mock pem data')
        t.end()
    })
})


test('fetchCert should hit cache for subsequent certificate reqs', function (t) {
    const options = { url: cert_url, cache: { } }
    const pem_data = 'mock pem data'

    nock('https://s3.amazonaws.com').get(cert_url.path).reply(200, 'mock pem data')

    fetchCert(options, function (er, pem_cert, servedFromCache) {
        t.equal(er, undefined)
        t.equal(pem_cert, 'mock pem data')
        t.equal(servedFromCache, false)

        fetchCert(options, function (er, pem_cert, servedFromCache) {
            t.equal(pem_cert, 'mock pem data')
            t.equal(servedFromCache, true)
            t.end()
        })
    })
})