使用Jest測試Firebase雲消息傳遞

Question

我正在嘗試用玩笑來測試Firebase雲消息傳遞，但是我的模擬功能有錯誤...

如何測試所有函數調用？

expect(jest.fn()).toHaveBeenCalled()
Expected mock function to have been called.

import { Sentry, SentrySeverity } from 'react-native-sentry';
import RNFirebase from 'react-native-firebase';
import Veery from 'react-native-veery';

export default function firebaseCloudMessaging() {
  try {
    const firebase = RNFirebase.app().messaging();

    firebase.getToken().then(Veery.setVeeryToken);

    firebase.getInitialNotification();

    firebase.onMessage(Veery.VeeryNotificationHandler);

    firebase.onTokenRefresh(Veery.setVeeryToken);
  } catch (error) {
    Sentry.captureException(error, { level: SentrySeverity.Error });
    console.warn('Error with firebaseCloudMessaging ', error);
  }
}

我的測試： https : //gist.github.com/ludwigCDSBDX/82749eb20eac44fffac8d5318864eb6f

謝謝！

Answer 1

我的錯誤：先前的模擬創建了多個模擬實例，因此當我嘗試檢查是否已調用我的模擬時，我在比較的是同一函數，而不是同一函數實例！

jest.mock('react-native-firebase', () => {
  const app = { messaging: () => messaging };

  const messaging = {
    getToken: jest.fn(() => Promise.resolve('myTokenMock')),
    getInitialNotification: jest.fn(),
    onMessage: jest.fn(),
    onTokenRefresh: jest.fn(() => Promise.resolve('myMockTokenRefresh')),
  };

return { app: () => app };
});