Game Testing
Releasing a game on PC, PlayStation, Xbox, iOS, and Android isn't five releases — it's five completely different QA challenges running in parallel. Platform-specific bugs, input differences, certification requirements, and performance constraints mean a test that passes on PC can fail catastrophically on mobile. This guide covers
Testing
Testing WearOS apps is different from phone testing. The screen is tiny, the interaction model is rotary input + swipe, and users expect extremely fast interactions — anything that takes more than 300ms feels slow on a watch. Horologist is Google's library for building and testing WearOS apps correctly. WearOS
Testing
Kaspresso is an Android UI test framework built on top of Espresso and UIAutomator. It solves the two biggest problems with raw Espresso: flaky tests and unreadable test code. With Kaspresso, you get a clean Kotlin DSL (via Kakao), automatic waiting and retry logic, and first-class Allure report integration. If
Maestro
Maestro is a mobile testing framework that replaces imperative test code with declarative YAML flows. You describe what the user does — tap this, type that, assert visible — and Maestro handles synchronization, retries, and cross-platform execution. This guide covers the flow syntax, handling dynamic content, CI integration, and how Maestro compares
Appium
Appium 2.x is a significant architectural departure from Appium 1.x — drivers and plugins are now installed separately, the server is leaner, and WebdriverIO has emerged as the best client library for writing and running tests. This guide covers the complete setup for iOS and Android, element locator discovery
Test Automation
NativeWind v4 brings Tailwind CSS utility classes to React Native using a compiler that converts className strings into StyleSheet-compatible styles. Testing NativeWind components requires understanding what the compiler produces and how to assert it. This guide covers NativeWind v4 testing: className-based assertions, dark mode switching, responsive breakpoints, and custom theme
Test Automation
React Native's New Architecture — Fabric renderer, JSI (JavaScript Interface), and TurboModules — changes how native modules communicate with JavaScript. For testing, the key impact is that TurboModules use synchronous JSI calls instead of asynchronous bridge messages, and Fabric renders components differently from the legacy renderer. This guide covers testing
Test Automation
Maestro is a mobile E2E testing framework that drives your app through real gestures on a simulator or device. For Expo Router apps, Maestro tests the full navigation stack — deep links, tab switching, modal presentation, auth redirects — without needing to instrument your app code. This guide covers E2E testing Expo
Test Automation
Expo Router brings file-based routing to React Native with full TypeScript support. Each file in your app/ directory maps to a route, layouts wrap segments, and tabs and modals are first-class patterns. Testing all of this requires understanding what Expo Router provides and what you need to verify yourself. This
Test Automation
EAS Build creates native iOS and Android builds in the cloud. For testing, EAS provides three distinct opportunities: preview builds for QA teams, build-time validation of native plugins, and production-equivalent builds for E2E testing. This guide covers testing strategies across the EAS Build pipeline: structuring build profiles, validating environment configs,
Testing
Maestro takes a different approach to mobile UI testing than most frameworks. Instead of writing JavaScript or Python test code, you define flows in YAML. Instead of requiring build-time instrumentation, it works with any app — debug builds, release builds, or even apps you don't have the source for.
Testing
Running mobile E2E tests locally is one thing. Getting them to run reliably in CI is another problem entirely. You're dealing with emulators that need time to boot, builds that need to be cached, iOS simulators that require macOS runners, and Android emulators that need KVM acceleration or