Cannot test realtime database

[balazsorban44]

Hi @soumak77
I have the following function in my source:

export const fetchData = async (ref, shouldSort) => {
  let result
  try {
    result = await ref.once("value")
    result = await result.val()
    if (shouldSort) {
      Object.keys(result).forEach(path => {
        result[path] = Object.values(result[path]).sort((a, b) => a.order - b.order)
      })
    }
    return result
  } catch (error) {
    sendNotification("error", error.message)
    return false
  }
}

In my test, I am trying to test the scenario when sholudSort is false, and the function should return the .val() of the database ref.

my firebase.mock.js:

import firebasemock from 'firebase-mock'

const mockdatabase = new firebasemock.MockFirebase()
const mockfirestore = new firebasemock.MockFirestore()

export default new firebasemock.MockFirebaseSdk(
  // RTDB
  path => path ? mockdatabase.child(path) : mockdatabase,
  () => null,
  // FIRESTORE
  () => mockfirestore,
  () => null,
  () => null
)

my test file:

import mocksdk from "./firebase.mock.js"

jest.mock("../../../lib/firebase", () => mocksdk)

describe("data fetched", () => {
  const fakeRef = firebase.database().ref("fake")
  const fakeData = {id: 1}

  beforeAll(() => {
    fakeRef.push(fakeData)
    fakeRef.flush()
  })

  it("don't sort", () => {
    const result = fetchData(fakeRef)
    expect(result).toBe(fakeRef.getData())
  })
})

In my console though, I get the following error:

If .getData can verify that the fake data has been pushed to the fake database, why does my function only return {}? Since it returns a Promise, I tried to test with async, then I get the following in the console:

[NullSoldier]

You need to call autoFlush. Your firebase requests don't digest automatically.

mockdatabase.autoFlush(1)
mockfirestore.autoFlush(1)

[RezaRahmati]

@NullSoldier I receive the below error
TypeError: mockfirebase.ref is not a function

Please see this #151