react-native-firebase mock

rnfirebaseMock.js

jest.mock('react-native-firebase', () => {
  return {
    messaging: jest.fn(() => {
      return {
        hasPermission: jest.fn(() => Promise.resolve(true)),
        subscribeToTopic: jest.fn(),
        unsubscribeFromTopic: jest.fn(),
        requestPermission: jest.fn(() => Promise.resolve(true)),
        getToken: jest.fn(() => Promise.resolve('myMockToken'))
      };
    }),
    notifications: jest.fn(() => {
      return {
        onNotification: jest.fn(),
        onNotificationDisplayed: jest.fn()
      };
    }),
    firestore: jest.fn(() => {
      return {
        batch: jest.fn(() => {
          return {
            commit: jest.fn(),
            set: jest.fn(),
            update: jest.fn(),
            delete: jest.fn()
          }
        }),
        collection: jest.fn(),
        doc: jest.fn(),
        settings: jest.fn(),
        runTransaction: jest.fn(),
      }
    })
  };
});