jest_setup.ts

import '@testing-library/jest-native/extend-expect'
import 'react-native-svg-mock'

beforeAll(() => {
  jest.useFakeTimers()
})

if (typeof window !== 'object') {
  // @ts-ignore
  global.window = global
  // @ts-ignore
  global.window.navigator = {}
}

// @ts-ignore
global.fetch = require('jest-fetch-mock')

// Mock LayoutAnimation as it's done not automatically
jest.mock('react-native/Libraries/LayoutAnimation/LayoutAnimation.js')

// Mock Animated Views this way otherwise we get a
// `JavaScript heap out of memory` error when a ref is set (?!)
// See https://github.com/callstack/react-native-testing-library/issues/539
jest.mock('react-native/Libraries/Animated/components/AnimatedView.js', () => ({
  default: 'View',
}))
jest.mock('react-native/Libraries/Animated/components/AnimatedScrollView.js', () => ({
  default: 'RCTScrollView',
}))
jest.mock('react-native-webview', () => {
  const { View } = require('react-native')
  return {
    default: View,
    WebView: View,
  }
})

// Mock ToastAndroid as it's not done automatically
jest.mock('react-native/Libraries/Components/ToastAndroid/ToastAndroid.android.js', () => ({
  show: jest.fn(),
  showWithGravity: jest.fn(),
  showWithGravityAndOffset: jest.fn(),
}))

jest.mock('react-native-shake', () => ({
  addListener: jest.fn(),
  removeAllListeners: jest.fn(),
}))

jest.mock('@react-native-clipboard/clipboard', () => ({
  setString: jest.fn(),
  getString: jest.fn(),
  hasString: jest.fn(),
}))

// this mock defaults to granting all permissions
jest.mock('react-native-permissions', () => require('react-native-permissions/mock'))