Aug 25, 2025 · 5 min read · Testing is not just about verifying if code runs. It’s about verifying that your app behaves correctly from the user’s perspective. Jest + React Testing Library (RTL) gives a powerful combination to achieve this. 1. Filtering Tests in Watch Mode When...
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Feb 26, 2024 · 10 min read · Introduction Test Driven Development (TDD) is a beneficial practice for engineers, but in reality, it's not always feasible. However, the initial investment in writing automated tests is worth the effort as it saves you time in the long run. In this ...
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Jan 27, 2024 · 2 min read · Are you tired of searching how to solve error such as TypeError: server.close / app.close() is not a function TypeError: Cannot read properties of undefined (reading 'address') TypeError: app.address / server is not a function Attempted to log "S...
Join discussionNov 30, 2023 · 5 min read · Introduction JavaScript testing is a crucial part of ensuring that web applications work correctly across different environments. In this context, tools like jsdom and happy-dom are incredibly valuable. They both provide ways to simulate a browser-li...
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Oct 22, 2023 · 3 min read · The IntersectionObserver is a powerful API for tracking elements' visibility within the viewport. Many modern web applications use it to implement lazy loading, infinite scrolling, or other interactions that depend on an element's visibility. When it...
Join discussionJun 13, 2023 · 2 min read · One of the joys of modern web development is the seamless integration of various libraries and frameworks. However, every so often, you can run into hitches that send you down the rabbit hole of debugging. Today, I want to share a recent experience a...
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Sep 28, 2022 · 3 min read · It was fun testing a component created from scratch by me : ) I was given an interview task to convert a Figma design into a modern React application. I wanted to create widgets from scratch, in order to obtain an easy-to-maintain and easy-to-test co...
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