Testing
WebXR applications are notoriously hard to test because they require browser APIs that only activate with real hardware. This guide shows how to use Playwright's WebXR emulation to test immersive sessions, controller input, hit testing, and XRSession lifecycle — all in CI without a headset. WebXR brings immersive experiences
Testing
Unity XR projects often go untested until a physical headset is involved, but that's unnecessary and slow. This guide covers Unity Test Framework, XR Simulation, controller input mocking, and Play Mode tests for XR rigs — everything you need to validate VR and AR behavior automatically. Testing immersive applications
Testing
OpenXR's promise is write-once, run-anywhere VR — but runtimes differ in subtle ways that break apps silently. This guide covers the OpenXR Conformance Test Suite, mock runtime testing, action binding validation, cross-platform extension testing, and automated frame timing checks to catch runtime-specific regressions before users do. OpenXR standardized the
Testing
Dialogflow CX agents require testing at three levels: the built-in Test Cases console feature for conversation regression, Python client library for automated route and parameter testing, and Flask test client for webhook validation. This guide covers all three with production-ready examples. Dialogflow CX introduced a significantly more structured approach to
Testing
Alexa Skill testing requires a layered approach: unit tests for individual intent handlers, integration tests for full request/response cycles, and end-to-end simulation with Bespoken. This guide covers all three layers with concrete examples in Node.js and Python. Building a reliable Alexa Skill is only half the battle. Without
Testing
Voice UI quality requires testing across five dimensions: NLU intent recognition accuracy (precision/recall/F1), multi-turn dialog flow completeness, slot filling edge cases and error recovery, accessibility compliance for voice, and cross-platform consistency across Alexa, Google, and Siri. This guide defines the test matrix and KPIs for each dimension. Voice
Testing
visionOS introduces entirely new UI paradigms — volumetric windows, immersive spaces, eye tracking, and spatial audio — that existing iOS testing patterns don't cover. This guide walks through XCTest for visionOS, RealityKit entity hierarchy testing, SwiftUI volume and immersive space testing, eye tracking simulation in Simulator, and render budget verification.
Testing
Rasa testing has three distinct layers: NLU model accuracy tests using rasa test nlu, conversation flow tests using rasa test core with story files, and unit tests for custom actions using pytest with mocked trackers. Each layer catches different categories of bugs. Rasa Open Source gives you full control over
Testing
Meta Quest runs Android under the hood, which means your Android testing toolchain — ADB, Appium, logcat, am instrument — works on Quest with some configuration. This guide covers device setup, Appium with UiAutomator2 for Quest UI automation, OVR Metrics for performance testing, and running Unity tests directly on device. Meta Quest
Testing
Google Actions testing spans three environments: the Actions Console simulator for interactive exploration, ngrok tunnels for local fulfillment development, and automated pytest suites for webhook logic and conversation flow regression. This guide covers all three with production-ready code. Google Actions (built with Actions Builder or the Actions SDK v3) presents
Testing
Puppeteer's page.pdf() generates PDFs from HTML pages — but verifying the output requires more than file existence checks. This guide covers testing PDF content via text extraction, visual regression diffs, layout assertions, and metadata checks using Node.js, Puppeteer, and the pdf-parse library. Key Takeaways Use pdf-parse to
Testing
MCP (Model Context Protocol) servers expose tools, resources, and prompts to AI agents. Testing them requires validating JSON-RPC protocol compliance, schema correctness, tool execution behavior, resource content, and error handling — none of which standard unit test frameworks handle out of the box. This guide covers how to test each MCP