Nock back not using records

I’m trying to record some Stripe HTTP calls happening on the background of executing Stripe’s node library.

I rooted for nock’s back feature however I’m not having best results while trying to execute it with 'record' mode.

What is happening:

• A fixture file is created if ran first with record mode. This includes 3 requests:
  • Corresponds to the call to Stripe API the library initiates for customer creation.
  • Second one is the call to Stripe API for subscription cereation
  • The third one is a hit to our API endpoint which actually causes the previous calls get executed.
• On the second and any consecutive execution of the tests, the response to my endpoint would end with null response.

This is the code snippet relevant to the usage of nock:

nockBack.fixtures = path.join(__dirname, 'fixtures')
nockBack.setMode('record')

describe.only('Subscriptions creation', function () {
  this.timeout(20000)

  before(function (done) {
    let {user, jwt} = getRandomUserAndJwt()
    testToken = jwt
    return setupTestDatabaseWithUser(user, async function (err, createdUser) {
      if (err) return done(err)
      testUser = createdUser
      const { nockDone } = await nockBack('subscription.json')
      chai.request(server)
      .post(API_BASE)
      .set('Authorization', `Bearer ${testToken}`)
      .send(testRequestPayload)
      .end(function (err, response) {
        const {status, body: subscription} = response
        status.should.equal(201)
        should.exist(subscription)
        const nyaFields = ['id', 'status', 'planId', 'stripe_status', 'dateSubscriptionWillRenew']
        nyaFields.forEach(f => subscription.should.haveOwnProperty)
        testSubscription = subscription
        nockDone()
        nockBack.setMode('wild')
        done(err)
      })
    })
  })

So

    const { nockDone } = await nockBack('subscription.json')

causes a file to be created. I repeat, it’s an array with 3 requests happening.

If I execute again,

    .end(function (err, response) {

err will be defined and telling:

{ NetConnectNotAllowedError: Nock: Not allow net connect for "127.0.0.1:63304/api/subscriptions" (...)
  name: 'NetConnectNotAllowedError',
  code: 'ENETUNREACH',
  message: 'Nock: Not allow net connect for "127.0.0.1:63304/api/subscriptions"',
  response: undefined }

So I tried adding

  nock.disableNetConnect()
  nock.enableNetConnect(/127\.0\.0\.1/)

before recording and also making sure at the end of the hook, nock set ups would look like:

    nockDone()
    nockBack.setMode('wild')
    nock.cleanAll()
    nock.enableNetConnect()

But still haveing same issues

[bohachevskyy]

Hello @benplummer @diegoaguilar please try to call nock.enableNetConnect();after nockDone initialization. It allows me to call localhost:

const { nockDone } = await nockBack('subscription.json')
nock.enableNetConnect(/127\.0\.0\.1/);

But there s another issue here: fixture contains timestamp in a request. The timestamp will be different each request, and fixture won’t correspond.

I tried to modify timestamp in before func that passed as an option to nockBack, but didn’t manage to do that.

Will be happy to hear any help 😃

[bmitchinson]

destructoring nockDone and saving it to call later worked great for me

    // Not to be utilized in committed code, only for local dev + recording fixtures
    //   Fixtures are then committed
    @given(/I am recording to "(.*)"/)
     public async startRecording(fixtureLocation: string) {
        nock.back.setMode("record")
        const { nockDone } = await nock.back(`${fixtureLocation}.json`, {
            // Don't mock requests made locally
            afterRecord: defs => defs.filter(def => !def.scope.includes("127.0.0.1"))
        })
        this.saveRecording = nockDone
    }

    @given(/I am done recording/)
    public async stopRecording() {
        if (!this.saveRecording)
            throw new Error(
                "You tried to end a recording that never began. Use startRecording prior to stopRecording."
            )
        else this.saveRecording()
    }
}