Testing
Voice UI testing is conversation graph testing. Every intent is a node, every response is an edge. Test happy paths through the conversation tree, test slot validation for all entity types, test session persistence across turns, and test what happens when users say unexpected things at every state. Use ask-
Testing
AR testing combines computer vision validation with standard mobile QA. Key areas: marker detection accuracy across lighting conditions, plane detection latency and stability, occlusion correctness, ARCore/ARKit framework behavior, and performance on your actual target device range. Automated screenshot comparison catches visual regressions in AR scenes. Human testing across environments
Vue
Vue Test Utils is the official testing library for Vue 3 components, providing utilities to mount components in isolation and assert their behavior. This guide covers everything from basic mounting to advanced slot and prop testing patterns used in production Vue 3 projects. Key Takeaways Use mount for integration and
NestJS
Guards, interceptors, pipes, and exception filters are the middleware layer of NestJS. They run before and after your controllers but are often left untested. This guide shows how to unit test each one in isolation using ExecutionContext mocks, and how to test their integration behavior via e2e tests with Supertest.
Contract Testing
Pact, Dredd, and Schemathesis are three different approaches to API contract testing, each solving a different part of the problem. Pact validates what individual consumers expect. Dredd validates that an implementation matches its OpenAPI/API Blueprint spec. Schemathesis uses property-based testing to automatically generate edge-case requests from an
Testing
Service meshes like Istio and Linkerd add a powerful layer of infrastructure between your microservices: traffic management, mTLS encryption, observability, and resilience features. But they also add complexity to testing. A service that works fine in unit tests may behave unexpectedly when running behind a mesh proxy. This guide covers
Testing
Retrying failing tests is a controversial topic. Critics say it hides flakiness and trains developers to ignore failures. Proponents say some level of retry is pragmatic in distributed test environments. Both are right — the answer is about when and how you retry. The Case Against Retries Automatic retries mask flaky
Testing
TDD, BDD, and ATDD are all test-first development approaches, but they differ in scope, audience, and tooling. Understanding these differences helps you choose the right approach for each situation — and many teams use all three together. TDD: Test-Driven Development TDD is a developer practice. You write unit tests
Testing
You've identified a flaky test. You can't fix it right now — it's intermittent, the root cause isn't clear, and you have a release to ship. What do you do? Deleting the test loses coverage. Skipping it silently means the failure is invisible.
Testing
Test-driven development in React is more challenging than server-side TDD, but it's absolutely practical. The key is knowing which layer you're testing: component behavior, custom hooks, or integration between components. TDD Setup for React Modern React TDD uses React Testing Library (RTL), which tests
Testing
TDD promises better design, faster feedback, and confident refactoring. Many teams try it and find the opposite: slow development, brittle tests, and refactoring that breaks dozens of tests at once. Usually the problem isn't TDD itself — it's specific anti-patterns that undermine the practice. Anti-Pattern
Testing
Test-driven development (TDD) is a software development practice where you write tests before writing code. It sounds backwards at first — how can you test something that doesn't exist yet? But once you experience the feedback loop, it's hard to go back. TDD changes how you