Мой компонент верхнего уровня берет children
из react-router
вот так:
class App extends Component {
render() {
return (
<div>
{React.cloneElement(children, this.props.widgets)}
</div>
)
}
}
Я пытаюсь написать простой тест с jest
, например:
it('renders without crashing', () => {
const div = document.createElement('div')
ReactDOM.render(<App />, div)
})
Однако этот тест завершается со следующей ошибкой:
FAIL src/App.test.js
● renders without crashing
TypeError: Cannot read property 'props' of undefined
at Object.<anonymous>.ReactElement.cloneElement (node_modules/react/lib/ReactElement.js:271:34)
at Object.cloneElement (node_modules/react/lib/ReactElementValidator.js:216:48)
at App.render (src/App.js:50:57)
at node_modules/react-dom/lib/ReactCompositeComponent.js:796:21
at measureLifeCyclePerf (node_modules/react-dom/lib/ReactCompositeComponent.js:75:12)
at ReactCompositeComponentWrapper._renderValidatedComponentWithoutOwnerOrContext (node_modules/react-dom/lib/ReactCompositeComponent.js:795:25)
at ReactCompositeComponentWrapper._renderValidatedComponent (node_modules/react-dom/lib/ReactCompositeComponent.js:822:32)
at ReactCompositeComponentWrapper.performInitialMount (node_modules/react-dom/lib/ReactCompositeComponent.js:362:30)
at ReactCompositeComponentWrapper.mountComponent (node_modules/react-dom/lib/ReactCompositeComponent.js:258:21)
at Object.mountComponent (node_modules/react-dom/lib/ReactReconciler.js:46:35)
at ReactCompositeComponentWrapper.performInitialMount (node_modules/react-dom/lib/ReactCompositeComponent.js:371:34)
at ReactCompositeComponentWrapper.mountComponent (node_modules/react-dom/lib/ReactCompositeComponent.js:258:21)
at Object.mountComponent (node_modules/react-dom/lib/ReactReconciler.js:46:35)
at mountComponentIntoNode (node_modules/react-dom/lib/ReactMount.js:104:32)
at ReactReconcileTransaction.perform (node_modules/react-dom/lib/Transaction.js:140:20)
at batchedMountComponentIntoNode (node_modules/react-dom/lib/ReactMount.js:126:15)
at ReactDefaultBatchingStrategyTransaction.perform (node_modules/react-dom/lib/Transaction.js:140:20)
at Object.batchedUpdates (node_modules/react-dom/lib/ReactDefaultBatchingStrategy.js:62:26)
Есть ли способ издеваться над cloneElement
? Или протестировать компонент таким образом, чтобы он игнорировал вызов cloneElement
?
React.cloneElement
. Мой вопрос касается того, как проверить при использованииReact.cloneElement
. - person Brandon   schedule 05.01.2017ReactDOM.render(<App widgets={some value} />, div)
- person Mayank Shukla   schedule 05.01.2017