React Native Testing Library - Test async backend call

i'm using react-native-testing-library to test some react native components and those act warnings are driving me insane.

Use case:

• Load Screen inside react-navigation.
• Using useFocusEffect, a get request is made to backend by using axios. Screen shows ActivityIndicator while loading.
• Screen shows a FlatList with objects in response.

Component:

import * as React from 'react'
import axios from 'axios'
import { useFocusEffect } from '@react-navigation/native'

...

const Screen = ({ navigation }) => {
  const [data, setData] = React.useState([])
  const [loading, setLoading] = React.useState(false)

  const loadData = React.useCallback(() => {
    setLoading(true)
    axios.get('url').then(response => {
      setData(response.data)
      setLoading(false)
    })
  }, [])
 
  const focusView = React.useCallback(() => {
    loadData()
  }, [loadData])

  const unfocusView = React.useCallback(() => {
    setData([])
    setLoading(false)
  }, [])

  useFocusEffect(
    React.useCallback(() => {
      focusView()

      return unfocusView
    }, [focusView, unfocusView])
  )

  return <JSX with proper testID>
}

...

export default Screen 

Test:

import * as React from 'react'
import { render, screen, waitFor } from '@testing-library/react-native'

import axios from 'axios'
import { NavigationContainer } from '@react-navigation/native'

import Screen fom '@screens/Screen'

jest.mock('axios')

test('shows a list of resource', async () => {
  const response = {
    data: [
      {id: 0, name: 'Thing 1'},
      {id: 0, name: 'Thing 2'}
    ]
  }

  axios.get.mockResolvedValueOnce(response)

  const navigation = {}

  render(<NavigationContainer><Screen navigation={navigation} /></NavigationContainer>)

  expect(await screen.findByTextId('_loading')).not.toBe(null)

  expect(await screen.findByTextId('_resources_list')).not.toBe(null)
})

I have been trying for a while and this version of the example seems to pass but always show some kind of warning You called act(() => ...) without await.