A book that helps you become a testing expert. A book that teaches testing techniques you did not know. It helps you talk about testing with confidence. It seems like mastering this one book could be enough to get you a job.

Front-end tests are needed to check that the user interface works correctly, prevent bugs in advance, and minimize the effect of code changes on existing features. To test, you first need to learn basic concepts and terminology, along with the relevant technologies and tools. Once you choose an appropriate test framework and tools—such as Jest, Mocha, or Cypress—you can set up an environment for running tests. It is common to start small with simple unit tests and gradually expand to more

According to translator Bae Eon-su's preface, not many teams wrote tests in their day-to-day work while the translator was working in Japan. Many developers give up on testing UI development because of a vague assumption that writing tests is difficult. But there is a big difference between deciding something is unnecessary based on sufficient knowledge and reaching that conclusion based on a vague impression. To save costs, tests can be used to exempt frequently unchanged areas from regression

During a recent job interview, I was asked, “Have you ever written test code while developing?” I answered that I had never applied it to a project in earnest. Afterward, I resolved to learn how to write tests properly. While looking for paid courses and YouTube videos about testing, I had the good fortune to come across this book. 🌱 Contents: CHAPTER 1 Testing Goals and Obstacles; CHAPTER 2 Testing Methods and Strategies; CHAPTER 3 Getting Started with Unit Testing; CHAPTER 4 Mock Objects;

Book reviews sponsored by publishers (Language: Korean). I was selected for JPub Publishing's third IT Professional Book Reviewer cohort and received a copy of the book. Although its official difficulty rating is said to be the lowest, you should absolutely not choose this book when you are first learning to code. Its beginner-level rating is for people who already work as front-end developers. If you have at least built a decent website on your own using HTML, CSS, and JavaScript, you may be

I had often heard terms such as TDD, white box, and black box mentioned only superficially as keywords, but I often found it daunting to go from seeing examples to applying them directly to a project. This book includes: new example code written last year, based on Jest, a testing library for the modern front end (Next.js). Since online searches for testing code mostly turn up outdated Java-based material focused on back-end code, I think this is a major advantage; coverage from terminology

On code reliability, one way to distinguish SI companies from service companies is whether they write tests, though that is not true of every company. For an SI project, something is not a problem if it is not specified in the contract. The client's requested features just need to work, and the service needs to earn more than it cost to develop. If the client decides the profit is too low, you might get hit with a lawsuit—that can be a scheme to cut the final payment. By contrast, service