how can i resolve this problem and this my jest.config.js module.exports = { preset: 'react-native', "setupFilesAfterEnv": [ "@testing-library/jest-native/extend-expect" ]...

I want to mock transaction as PoolConnection jest.mock('../../src/config/db.js', () => ({ __esModule: true, default: { execute: jest.fn(), query: jest.fn(), ...

This is my unit test: import '@testing-library/jest-dom/extend-expect'; import { render, cleanup, fireEvent, waitFor, waitForElementToBeRemoved, screen, } from '@testing-library/svelte'; ...

I am building a Manifest V3 Chrome Extension using Firebase and testing it with Jest and Puppeteer. My manual testing works perfectly, but one specific automated test consistently fails with a 30-...

I’m trying to add a custom method onto the Jest API inside a setup file (config.ts) configured via setupFilesAfterEnv. However, the jest object I mutate in the setup file is NOT the same reference as ...

Jest 30 uses JSDOM 26, which breaks my tests. I want to test if location.search was modified. Since JSDOM 21, it is not possible to mock location.search as easily as it used to be: // does not work ...

I have an integration test that publishes a domain event to Google Cloud Pub/Sub (using the Pub/Sub emulator). Eventduspatcher.integration.test.ts passes but Jest prints: Jest did not exit one second ...

I'm running into some inconsistent behavior with Jest 30.x, specifically when parsing a jest.config.ts file that imports another TypeScript module, on Node.js 22.18+. My code uses ESM syntax for the ...

I'm testing a Backstage plugin component that renders a list of Ansible components using the Backstage Table from @backstage/core-components. In my test, I mock the catalog API to return 2 entities (...

My question is related to Enabling Jest cache in CI servers but a bit more specific. We use Jest with cache enabled on a CI server running tests on multiple projects. By default, Jest uses /tmp/...

As I understand Jest test execution gets faster when we run along with the cache build over the previous runs. In out project we are able to realize that benefit when we run our test in local. We are ...

I'm experiencing frustrating Jest coverage inconsistencies in my React project. When I run tests for individual files in isolation, I get perfect 100% coverage as expected. However, when I run the ...

Im trying to configure an unit test for my website with Jest and I can't get it to work correctly. I've tried some of the solutions suggested by the ts-jest documentation but it still hasn't worked. ...

I am beginning to add tests to my TypeScript web application using Jest. Some functions (or methods) use the SVG API and interact with the DOM. I installed: jest @types/jest jest-environment-jsdom, ...

Im trying to test an error state which get updated when no foundEnterprise match is found: async function onSubmit (data) { try { const enterprisesData = await fetchData() const ...