Category "jestjs"

Jest did not exit one second after the test run has completed

I got the following error by running the test case: Jest did not exit one second after the test run has completed. This usually means that there are async

Class constructor NodeEnvironment cannot be invoked without ‘new’

At first I encountered this error: https://www.mongodb.com/community/forums/t/typeerror-class-constructor-nodeenvironment-cannot-be-invoked-without-new/151980 P

Jest did not exit one second after the test run has completed using express

I'm using JEST for unit testing my express routes. While running the yarn test all my test case are getting passed, but I'm getting an error Jest did not exi

[TypeError: (0 , react_router_dom_1.useParams) is not a function]

I have a component which uses react-router-dom's useParams hook to get params. It is used in my component as : /// Child.tsx const Child = () => { const

Imports not importing using Jest and Typescript

I am using Jest, Enzyme and Typescript, but for some reason certain imports are not working... they are undefined. For example, I have import ReactMarkdown from

React Testing library custom setup import test-utils: module not installed. Unable to resolve path

I'm trying to configure jest absolute path for my custom test-utils directory (https://testing-library.com/docs/react-testing-library/setup#configuring-jest-wit

How to mock $nuxt object in vue-test-utils and jest

I am using vue-test-utils and jest in order to test my code. My test run without any problem except if it pass through the code below $nuxt.$store.commit("devi

Jest: ReferenceError: global is not defined

So I am writing unit test using "react-testing-library" on Jest and I have this error: Test suite failed to run ReferenceError: global is not defined

How do I use Vue3 with vue-jest?

I have the following dependency... "vue-jest": "latest", But when I run npm install I get... npm WARN ERESOLVE overriding peer dependency npm WARN Found: vue@3

How to turn off logs from winston for jest

Currently I am testing a NodeJS app using jest. Particularly the system looks like this: NodeJS v13.4.0 Jest 25.4.0 winston@next 3.2.1 When I run tests, I lik

Is it is possible to test only one function from component with Jest?

I have react component, for example something like this: const MyComponent = (props) => { const [state, setState] = useState(true); const {data} = useCon

Playwright JS - How to globally define/change timeout if element/selector not found?

Basically I want playwright to wait for each element 5 seconds if element not found. There is a way to change timeout individually as given below: await page.wa

Number Matcher Error even though values are of type Number

I am having trouble with the third test case in my describe case. More specifically, I get the error with the line expect(secondResult._body.length).toHaveLengt

NestJS cookie-parser is not a function error during e2e test

I have tried to add cookie-parser - https://www.npmjs.com/package/cookie-parser to my NestJS app: import * as cookieParser from 'cookie-parser'; consumer .appl

How to debug Jest Tests when using Yarn 2 / Yarn PnP

I'd like to use the node --debug-brk feature described in a previous answer and the jest docs to debug in npm/yarn 1 based projects, but node_modules/ is not pr

How to mock uuid with Jest

so on my search for an answer to my problem I found this post: Jest: How to globally mock node-uuid (or any other imported module) I already tried the answer b

@react-native-firebase breaking unit tests

I installed v6 of @react-native-firebase, it's working as expected but when I try to run a unit test I get the following error: Jest encountered an unexpected

Jest Cannot read property 'createEvent' of null

I was trying to mock rejected value and got this error. It's weird that this construction works in the case of "success" addUser.mockImplementation(value =>

Unexpected token 'import' error while running Jest tests?

I realize this question has been asked several times but all of the solutions I've come across don't seem to work for me. I'm running into the following error w

How to do Parameter Validation while using aws-sdk-mock

I am using aws-sdk-mock with Jest for testing AWS Lamda. My lambda uses AWS Polly Service to convert text to speech. Following is the piece of code which I want