Mocked react-native-contacts

__mocks__react-native-contacts.js

jest.mock('react-native-gesture-handler')

const contacts = [
  {
    displayName: 'Abel Tesfaye',
    cellphone: '11971033230'
  },
  {
    givenName: 'Chancelor ',
    familyName: 'Bennett',
    cellphone: '11971033231'
  }
]

export default {
  getAll: fn => fn(null, contacts)
}

index.test.js

import '@testing-library/jest-native/extend-expect'
import React from 'react'
import { useFocusEffect } from '@react-navigation/native'
import { ApolloProvider } from '@apollo/react-hooks'
import { createMockClient } from 'mock-apollo-client'
import Contacts from 'react-native-contacts'

import { render, wait } from 'test-utils'
import DorisAnalytics from '~/services/DorisAnalytics'

import ContactsScreen from './index'

const setMock = jest.fn()
const trackMock = jest.fn()
const navigateMock = jest.fn()
const navigationMock = {
  navigate: navigateMock
}

jest.mock('react-native-contacts')

describe('the ContactsScreen screen', () => {
  jest.spyOn(DorisAnalytics, 'track').mockImplementation(trackMock)
  jest.spyOn(DorisAnalytics, 'setPeople').mockImplementation(setMock)

  beforeEach(() => {
    jest.clearAllMocks()
  })

  it('should return users from address book', async () => {
    const mockClient = createMockClient()

    const useFocusEffectCallback = jest.fn(callback => callback())
    useFocusEffect.mockImplementationOnce(useFocusEffectCallback)

    Contacts.getAll = jest.fn(_ =>
      Promise.resolve([
        {
          displayName: 'Abel Tesfaye',
          cellphone: '11971033230'
        },
        {
          givenName: 'Chancelor ',
          familyName: 'Bennett',
          cellphone: '11971033231'
        }
      ])
    )

    const { getByTestId } = render(
      <ApolloProvider client={mockClient}>
        <ContactsScreen navigation={navigationMock} />
      </ApolloProvider>
    )

    await wait()

    const loading = getByTestId('DorisLoadingWrapper')

    expect(loading).toBeDefined()
  })
})