Any ideas on this code  jest.useFakeTimers()   it('simpleTimer', async () => {   async function simpleTimer(callback) {     await callback()    // LINE-A without await here, test works as expected.     setTimeout(() => {       simpleT...
I have this action in react  export function fetchPosts() {     const request = axios.get(`${WORDPRESS_URL}`);     return {         type: FETCH_POSTS,         payload: request     } }   How do I test axios in this case? Jest have this use case on t...
I have a react component(this is simplified in order to demonstrate the issue):  class MyComponent extends Component {     handleNameInput = (value) => {         this.searchDish(value);     };      searchDish = (value) => {       //Do something...
I'm trying to write a simple test for a simple React component, and I want to use Jest to confirm that a function has been called when I simulate a click with enzyme. According to the Jest docs, I should be able to use spyOn to do this: spyOn.  H...
I'm trying to fiddle with Ecmascript 6 modules using webpack + traceur to transpile to ES5 CommonJS, but I'm having trouble successfully unit testing them.  I tried using Jest + traceur preprocessor, but the automocking and dependency names s...
I recently wanted to test that some custom method gets conditionally called in the componentDidMount method of a React component.  componentDidMount() {   if (this.props.initOpen) {     this.methodName();   } }   I'm using Jest as my testing fram...
Original  First of all, I am following the Flux architecture.  I have an indicator that shows a number of seconds, ex: 30 seconds. Every one second it shows 1 second less, so 29, 28, 27 till 0. When arrives to 0, I clear the interval so it stops repe...
Simulating a button click seems like a very easy/standard operation. Yet, I can't get it to work in Jest.js tests.   This is what I tried (and also doing it using jquery), but it didn't seem to trigger anything:  import { mount } from 'en...
I'm working with some code where I need to test type of exception thrown by function (Is it TypeError, ReferenceError etc.).  My current testing framework is AVA and I can test it as a second argument t.throws method, like here:  it('should t...
I test Vue project with jest, bug I got errors says:     Jest encountered an unexpected token and SyntaxError: Unexpected token import   here is my jest.conf.js, I set the "transorm" option with babel-jest and vue jest, but I still got the er...

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