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 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...

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 trying to shallow render a component to perform some basic unit tests.  The component I am doing this on has two child components which are rendered several times each depending on the parents props.  When querying the shallow rendered compon...

I have a serious problem with testing methods of my main  component. My actual test after many retries still don't work and looks like this:  describe('<App />:', () => {     beforeEach(() => {         wrapper = mount(<Prov...

I have my button inside a component, which calls a method deleteData on click. How do I test the deleteData method is called on the button click in jest?  <Modal.Footer>   <Button id="trashBtn" onClick={this.deleteData}>Delete<...

Alright I have a component called <TestButton />. Inside the <TestButton /> there are two Semantic UI React component, <Button /> and <Header>.  Basically, when the <Button> is clicked, it toggles display: none; to <H...

Issue:  I am running my tests with Jest and Enzyme when I came across this error when I was running my code on a different machine.  When I run npm test which only runs jest --coverage --verbose it will get this error every time. However, this doesn&...

I have a component which uses axios within componentDidMount to retrieve data from the server. When using Jest / Enzyme for unit testing the component, the tests fail with a network error.  How do I mock componentDidMount so that the axios call to th...

I just finished writing my first Reactjs component and I am ready to write some tests (I used material-ui's Table and Toggle). I read about jest and enzyme but I feel that I am still missing something.  My component looks like this (simplified):...