In-depth tutorials and comparisons for testing tools and frameworks — Playwright, Cypress, Selenium, Robot Framework, and more.
Test Automation
Redux Toolkit (RTK) is the official, opinionated way to write Redux logic. It eliminates the boilerplate of hand-written action creators and reducers, but testing RTK code still requires understanding what to test at each layer: slice reducers, selectors, createAsyncThunk flows, and the store itself. Setup npm install @reduxjs/toolkit
Test Automation
Effector is a reactive state manager built on the event-sourcing model. Unlike Redux, Effector has no single store — instead, you compose granular units: events, stores, and effects. This makes testing extremely straightforward: each unit is independently testable with no boilerplate. The key testing primitive is fork + allSettled, which gives
Testing
Module Federation was originally a Webpack 5 feature, but @originjs/vite-plugin-federation brought it to the Vite ecosystem. Testing Vite-based federated modules requires a different setup than Webpack — Vitest is the natural testing tool, and the module resolution strategy for federated imports needs specific configuration. This guide covers
Testing
Tauri builds desktop applications with a Rust backend and a web frontend (React, Vue, Svelte, or plain HTML/JS). Testing Tauri apps requires a split strategy: Rust unit tests for backend commands, JavaScript/TypeScript tests for the frontend, and integration tests that validate the communication between them. This guide covers
Testing
The Vue 3 Composition API changed how we write Vue components — and it changed how we test them. Composables can be tested in isolation, reactive state is explicit and predictable, and <script setup> components are simpler to reason about. But the patterns for testing them effectively aren'
Testing
Single-SPA is a framework for orchestrating multiple micro-frontend applications on a single page. Each micro-frontend registers as an application with its own lifecycle hooks — bootstrap, mount, and unmount — and Single-SPA activates them based on URL patterns. Testing Single-SPA applications requires testing at three levels: individual
Testing
Playwright has first-class support for Electron application testing since v1.9. Unlike Spectron (deprecated) or older Electron testing approaches, Playwright connects to Electron directly — giving you access to both the renderer process (web content) and the main process (Node.js environment) in a single test. This guide covers Electron
Testing
Desktop apps must work on Linux, macOS, and Windows — and each platform has different rendering engines, file system behaviors, system APIs, and distribution formats. A CI/CD pipeline that only tests on one platform misses platform-specific bugs. This guide covers building cross-platform CI/CD testing pipelines for desktop
Testing
Module Federation in Webpack 5 enables true micro-frontend architecture — separate teams building, deploying, and updating independent JavaScript bundles that compose into a single application at runtime. The testing challenges this introduces are real: federated modules can fail to load, version contracts can break silently, and the shell app'
Testing
@testing-library/vue applies Testing Library's core philosophy to Vue 3 component tests: query elements the way users find them, interact with the interface like a user would, and assert on visible outcomes rather than implementation details. This guide shows how to write Vue 3 component tests with
Testing
Nuxt 3's auto-imports, composables, and server routes require a different testing approach than standard Vue 3. Vitest combined with @nuxt/test-utils provides first-class support for testing in the Nuxt runtime environment — giving you access to auto-imported functions, useNuxtApp(), and SSR utilities without elaborate mocking.
Testing
Nuxt 3's server directory provides a full Node.js server powered by H3, Nitro, and unjs utilities. Server routes in /server/api/, middleware in /server/middleware/, and utilities in /server/utils/ are testable as regular HTTP handlers — you don't need to spin up a browser to