jeudi 9 mai 2019

Jest error when importing App in React: Cannot read property 'directEventTypes'

I'm trying to get Jest working with my React app, but I get this error when running 'sudo npm run test':

 FAIL  __tests__/App.test.js
  ● Test suite failed to run

    TypeError: Cannot read property 'directEventTypes' of undefined

      at Object.directEventTypes (node_modules/react-native-gesture-handler/GestureHandler.js:47:24) 
      at Object.<anonymous> (node_modules/react-native-gesture- handler/Swipeable.js:11:1)

I did some poking around and found that this only happens when I import App from App.js in my test file:

 import App from '../App';
 describe('<App />', () => {
    it('has 1 child', () => {
      const tree = renderer.create(<App />).toJSON();
      expect(tree.children.length).toBe(1);
 ..

I searched around, and no one seems to have a fix for this.

I tried everything located here https://github.com/react-navigation/react-navigation/issues/5264 and here https://github.com/kmagiera/react-native-gesture-handler/issues/344#issuecomment-440572584, but nothing works.

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