I configured all my jest with babael, but I can't run the tests, it always shows the same error. I'm using nextJs and typescript with styled-component ...

I am fairly new to ReactJS and was messing around with Material UI in a build I'm working on. I installed the package and it completely messed up my b ...

I am testing a component ComponentA.spec.js but I am getting TypeError: Cannot read property 'type' of null. It works if I get rid of the await keywor ...

I have just started learning react testing library with jest and created a sample application to mock the server.my node version is v16.13.0. However, ...

I got errors and my .babelrc.json is I am copying codes from https://github.com/tunnelvisionlabs/antlr4ts into my repo to try it. but when I run ...

I'm using Formik to create a form for a React web app. The submission is as the following code. const submitForm = (values) => { console.log ...

I am new to testing react components and I am getting a constant error here. It is something to do with the CSS import in the embedded component of th ...

I'm getting the below error while writing the test case against my home page, which contains the landing image. I have tried the below-suggested so ...

My Service.ts My Service.test.ts If I run the test I get the following error. ReferenceError: Cannot access 'getDeciderMock' before initializat ...

I have a problem with that learning case. I have the following code and I want to test the throwing error: Test: ...

I am trying to collect code coverage from the file with the "es" extension(i.e. sum.es) (here es means ECMA script). This is what folder structure lo ...

We are using Jest for Unit Testing. We have a common file that contains the common OnChange() function definition. While writing unit test case for On ...

I'm using Redux toolkit in a React.js app, and I extracted my logic as below: Store.tsx const history = createHashHistory(); const middleware = [ ...

Here it's written header.js code and it's testing with jest framework. While im testing im getting the error property of match of props.value as it is ...

I'm using Jest v26.6.3 and I'm trying to create a filter to programmatically select what tests to run. I'm following the docs on how to setup a filte ...

Can`t understend how to specify the id, I am a beginner, I hope to help. the error from the beginning was that: TypeError: Cannot read property '0' of ...

I have a React Native app in which I installed and used jail-monkey to check if the device is rooted. As soon as I added it, some of my Jest tests sta ...

When I try to run jest in my Typescript Next.js project, I get this error: I have already tried to add d3-scale to transformIgnorePatterns in my je ...

I have use these packages in the package.json file Also have configuration for jest like this Setup.tests.js file is in the root folder with con ...

Why do I keep getting error message "SyntaxError: Cannot use import statement outside a module" when I use Babel and Jest? I have a super simple app ...