Next.js
Playwright is the best end-to-end testing tool for Next.js applications — it can start your dev server automatically, test across multiple browsers, and handle modern patterns like server-side rendering and streaming. The built-in Next.js integration makes setup minimal and CI integration straightforward. Key Takeaways Let
Testing
Testing multilingual applications is one of those things teams either do well or skip entirely. When you skip it, you find out the hard way: a Japanese user reports that your checkout button disappears, a German customer can't read dates, or your Arabic support launch breaks the entire
Testing
Managing Protobuf schemas across multiple services is painful without tooling. Proto files drift from naming conventions, breaking changes slip in without warning, and protoc invocations become unmaintainable shell scripts. buf is the modern solution: a CLI that handles linting, breaking change detection, and code generation with a single buf.yaml.
Testing
Visual regression testing has a fundamental tension: be sensitive enough to catch real bugs, but not so sensitive that you drown in false positives. How you resolve that tension depends almost entirely on your comparison method. There are two main approaches: pixel-level diffing (compare every pixel) and AI-based
API Testing
If you've ever dealt with Postman's cloud sync forcing you to log in, its collection format being a massive JSON blob that makes Git diffs unreadable, or the frustration of your entire team's API workspace living in a proprietary cloud — Bruno was built to
Testing
PITest (PIT) is the dominant mutation testing framework for JVM languages. While most documentation targets Maven/Java setups, PITest works equally well with Gradle and Kotlin — with a few configuration differences worth knowing about. This guide covers the complete Gradle setup, Kotlin-specific behavior, and how to get meaningful results
Vue
Pinia stores are plain JavaScript objects with reactivity — testing them does not require mounting a Vue component. This guide covers direct store unit tests, mocking stores in component tests, and testing async actions with side effects like API calls and notifications. Key Takeaways Test stores directly without mounting components. Call
Testing
Running 5 headless tests sequentially is easy. Running 50 in parallel across a CI pipeline without Chrome crashing, eating all memory, or fighting over ports — that's where the architecture decisions matter. Here's how Browserless handles scale and how to integrate it properly into CI. Session Concurrency
Testing
Puppeteer has two ways to get a browser: puppeteer.launch() which spawns a local Chrome process, and puppeteer.connect() which attaches to an existing one. Browserless is that existing one. The swap is a single line change. connect() vs launch() // launch() — spawns Chrome locally const browser = await puppeteer.launch({ headless:
Testing
Playwright supports remote browser execution through its CDP (Chrome DevTools Protocol) connection. Browserless exposes exactly this interface. The result: your Playwright tests run unchanged, but the browser lives on a remote server. How the Connection Works Normally, Playwright spawns a browser process locally: const browser = await chromium.launch(); Copy With
Testing
Physics simulation software is tested differently from business software. There is rarely a "correct answer" in a database to compare against. Instead, verification and validation (V&V) relies on mathematical relationships: convergence rates, conservation laws, symmetry properties, and known analytical solutions. This guide covers the full stack
Testing
Browserless is a managed headless Chrome service. Instead of spinning up Chrome yourself — dealing with dependencies, sandbox flags, memory leaks, and process management — you point your code at a WebSocket endpoint or REST API and let Browserless handle the browser lifecycle. The core value proposition: your test or scraping code