Articles by Tag #jest
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✨It's 2025, But Jest🔧 is Still Rocking the Testing World 🚀
Testing your React components might sound intimidating, but with Jest, it’s actually fun! 🚀 In the...
Are you writing test for the first time? This might help.
It can be a daunting task to write tests when you do not even know what to test for or why you are...
Jest - Testing with React and React Testing Library: Useful APIs
Resources react-testing-library API Firing Events waitFor About Queries Document:...
Mastering Jest in Next.js: A Complete Guide for App Router and TypeScript 🚀
Dive into the world of modern web testing with this comprehensive guide on integrating Jest into your...
How to Set Up Jest in Angular 19 (Step-by-Step Guide)
1. Install the dependencies: npm install jest jest-preset-angular @types/jest...
Mocking with Jest and typescript - a cheatsheet
Jest is great at mocking imports in javascript/typescript, but I find it very hard to remember...
Unit Testing with Jest – From Zero‑Config to Production Ready
Jest is a fast, delightful JavaScript testing framework created at Meta. It can run out‑of‑the‑box,...
Testing Angular HTTP Services using Jest
The tests check if the HTTP service works correctly by: Making fake API calls (GET/POST) Returning...
Estratégias para escrever código com maior testabilidade - uma análise imperativa
Código com maior testabilidade Observações Iniciais A melhora na escrita de...
Guide - Setting Up Jest for Unit Testing in a TypeScript React Project
Recently, I got a chance to work on my first typescript project, and my first task was to set up unit...
How to create a test ecosystem
As a QA Engineer, I have developed a robust test ecosystem that ensures the reliability and...
Comparing Jest, React Testing Library, and Playwright: Testing Approaches for React Applications
1. Jest Purpose: Jest is a testing framework for JavaScript, commonly used for unit and integration...
🛠️ Writing Reliable Code from the Ground Up !
The Coding Nightmare - We’ve all Experienced 😵 Imagine spending hours crafting what you...
AI as a Coding Tool: A Mixed Experience
Even though AI has been a hot topic in recent times, I had been reluctant to use it in my work as I...
Strategies for Writing More Testable Code - An Imperative Approach
More testable code Initial Observations Improvement in test writing and code...
The Power of Jest and React Native Testing Library Combined
1. Introduction to Jest and React Native Testing Library Jest is a JavaScript testing...
How to Test Functions That Return Functions in TypeScript with Jest
In one of my recent projects, I had a function that, given an input, generates and returns a new...
Mock functions in individual tests using Jest
Mock functions in individual Jest tests & fallback to the original implementation if no mock was provided.
Using and Mocking Angular Environments with Jest
In production-grade Angular applications, API URLs and other environment-specific properties are...
3. How to setup Jest in a Next 15 project (+ eslint for testing)
At the time of writing the first 2 parts in this series, I was using Next 15.0.1. That version still...
How to Run Jest Unit Tests in a Typescript Project
How To Run Jest Unit Tests In a Typescript Project Follow these steps to set up Jest unit...
Solving the Jest Native Module Error in a React Native Expo Project
While working on a React Native Expo project, I encountered a perplexing error message during my...
Mocking Network Requests Made Easy: Integrating Jest and MSW
Writing unit tests that involve mocking or stubbing API calls can feel overwhelming—I’ve been there...
Testing Callback Functions with Jest
When writing unit tests, you may encounter a scenario where you need to test a function that is...
Speed Up Your Tests with Jest and Vitest
Introduction If you've ever created automated tests for your project, you’re probably...
Writing integration tests with jest and puppeteer
For quite some time already I'm working on a personal project every friday which contains a part that...
🧪 Setup Jest with (Webpack, Vite)
"You should write tests before you write the code." ⏤ creator of TDD Why Jest? Jest is...
Testing Angular simple Components using Jest
simple-component.ts @Component({ selector: 'simple-component', template: ` <button...
Introduction to Jest: Unit Testing, Mocking, and Asynchronous Code
A description of the post
Testing a GraphQL Application with Jest and SuperTest
In this blog post, we'll explore the challenges and solutions involved in testing a GraphQL API using...