jest-setup.js

import React from 'react';
import * as ReactNative from 'react-native';
global.React = React
global.ReactNative = ReactNative

jest.mock("@react-navigation/native", () => {
  const actualNav = jest.requireActual("@react-navigation/native");
  return {
    ...actualNav,
    useNavigation: () => ({
      navigate: jest.fn(),
      dispatch: jest.fn(),
    }),
  };
});