当使用模块react-native-push-notification
时,我有这个错误:
FAIL __tests__/index.android.js
● Test suite failed to run
Invariant Violation: Native module cannot be null.
at invariant (node_modules/fbjs/lib/invariant.js:44:15)
at new NativeEventEmitter (node_modules/react-native/Libraries/EventEmitter/NativeEventEmitter.js:32:1)
at Object.<anonymous> (node_modules/react-native/Libraries/PushNotificationIOS/PushNotificationIOS.js:18:29)
at Object.get PushNotificationIOS [as PushNotificationIOS] (node_modules/react-native/Libraries/react-native/react-native.js:97:34)
at Object.<anonymous> (node_modules/react-native-push-notification/component/index.ios.js:10:23)
我试图通过创建 __mocks__/react-native.js
并将这段代码放入其中来模拟模块:
const rn = require('react-native')
jest.mock('PushNotificationIOS', () => ({
addEventListener: jest.fn(),
requestPermissions: jest.fn(),
then: jest.fn()
}));
module.exports = rn
现在,我有这个错误:
FAIL __tests__/index.android.js
● Test suite failed to run
TypeError: Cannot read property 'then' of null
at Object.<anonymous>.Notifications.popInitialNotification (node_modules/react-native-push-notification/index.js:278:42)
at Object.<anonymous>.Notifications.configure (node_modules/react-native-push-notification/index.js:93:6)
at Object.<anonymous> (app/utils/localPushNotification.js:4:39)
at Object.<anonymous> (app/actions/trip.js:5:28)
我如何才能以正确的方式完全模拟这个模块?
最佳答案
我通过创建一个安装文件 jest/setup.js
来模拟模块 PushNotificationIOS
:
jest.mock('PushNotificationIOS', () => {
return {
addEventListener: jest.fn(),
requestPermissions: jest.fn(() => Promise.resolve()),
getInitialNotification: jest.fn(() => Promise.resolve()),
}
});
我通过将此行添加到 packages.json
来配置 jest 来运行此设置文件:
"jest": {
...
"setupFiles": ["./jest/setup.js"],
}
关于javascript - 如何在 React native Jest 测试中模拟推送通知 native 模块?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/43157979/