How to find specific property in objects without name in array

Question

I have an API whose response looks like this (notice that it is objects without name in array):

{
 offers: [
  {
   sticker: null,
  },
  {
   sticker: null,
   score: "67",
  },
  {
   sticker: null,
  },
  {
   sticker: null,
  },
  {
   sticker: null,
   score: "70",
  }
 ]
}

How to check if the property score exists in this API response? I tried using

expect(resp.body.offers.some((offer: any) => offer.score !== undefined && typeof offer.score === "string")).to.be.true;

and many other ideas I had but nothing works. It will always throw error expected false to be true.

Answer 1

Your assertion is actually passing (according to the code you posted), so it looks like the response is the offers array

const response = {
  offers: [
    {
      sticker: null,
    },
    {
      sticker: null,
      score: "67",
    },
    {
      sticker: null,
    },
    {
      sticker: null,
    },
    {
      sticker: null,
      score: "70",
    }
  ]
}

// original assertion passes
expect(response.offers.some(offer => {
  return offer.score !== undefined && typeof offer.score === "string"}
), 'original assertion passes').to.be.true

---

Cypress lodash is really useful for parsing object lists, here's a few examples:

const score67 = Cypress._.find(response.offers, {score: "67"})
expect(score67).not.to.be.undefined

const score68 = Cypress._.find(response.offers, {score: "68"})
expect(score68).to.be.undefined

const firstWithScore = Cypress._.find(response.offers, 'score')
expect(firstWithScore.score).to.be.a('string')

const scores = Cypress._.flatMap(response.offers, (offer) => offer.score).filter(Boolean)
expect(scores).to.deep.equal(['67', '70'])
expect(scores.every(s => typeof s === 'string')).to.eq(true)

Answer 2

Solved by this from Aladin:

const scores = Cypress._.flatMap(response.offers, (offer) => offer.score).filter(Boolean)
expect(scores.every(s => typeof s === 'string')).to.eq(true)

but whats weird is that all other lodash will fail. Declared response inside test will pass, but when it comes from API response, it will fail.