ai4 min read
How to Use AI for Test-Driven Development
Leverage AI tools to accelerate test-driven development while maintaining high code quality.
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Testing
22 articles
react2 min read
React Testing — Vitest and React Testing Library
Write reliable tests with Vitest and React Testing Library.
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vitest1 min read
Vitest — Fast Unit Testing for TypeScript
Learn Vitest for fast unit testing. TypeScript support, parallel execution, and modern testing patterns.
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jest1 min read
Jest vs Vitest — Testing Framework Comparison
Compare Jest and Vitest testing frameworks. Speed, features, and migration paths.
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supertest2 min read
Supertest — API Integration Testing
Test REST APIs with Supertest. Integration testing, mocking, and real-world examples.
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testing5 min read
Testing in 2026: Vitest, Playwright, React Testing Library Complete Guide
Master testing in 2026: unit tests with Vitest, component tests with React Testing Library, E2E tests with Playwright, API testing, and CI/CD integration. Test your Next.js app the right way.
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ai-agents11 min read
Evaluating AI Agents — Trajectory Testing, Tool Use Accuracy, and Task Completion
Master agent evaluation: trajectory analysis, tool accuracy, task completion rates, efficiency scoring, and LLM-as-judge evaluation frameworks.
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ai-agents10 min read
Building a Code Generation Agent — From Spec to Tested Code
Build code generation agents that parse specs, generate code with examples, validate syntax, run tests, and iterate until code passes.
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evaluation7 min read
AI Evaluation Frameworks — LLM-as-Judge, DeepEval, and Automated Testing
Build automated evaluation pipelines with LLM-as-judge, DeepEval metrics, and RAGAS to catch quality regressions before users see them.
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testing13 min read
Testing AI Systems — Unit Tests, Integration Tests, and Non-Determinism
Test AI systems with mocking, snapshot testing, property-based testing, and regression suites.
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testing10 min read
API Contract Testing With Pact — Catching Breaking Changes Before They Hit Production
Implement consumer-driven contract testing with Pact to verify that APIs and clients agree on their interface without full integration tests.
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database10 min read
Testing Database Migrations — Catching Breaking Changes Before They Reach Production
Test migrations for backwards compatibility, forwards compatibility, rollback safety, and data integrity. Catch schema-code mismatches before deployment.
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helm8 min read
Helm Charts in Production — Templating, Testing, and Chart Promotion Strategies
Master Helm chart design with sensible defaults, comprehensive testing, and promotion pipelines. Scale from single-chart deployments to Helmfile-orchestrated multi-chart platforms.
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architecture10 min read
Hexagonal Architecture in Node.js — Ports, Adapters, and a Codebase You Can Actually Test
Implement hexagonal architecture to keep your domain logic framework-agnostic and testable, with ports defining contracts and adapters providing implementations.
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infrastructure8 min read
Testing Infrastructure as Code — Terratest, Policy-as-Code, and Shift-Left IaC
Test Terraform modules with Terratest, enforce policies with OPA/Conftest, scan with tfsec, and catch infrastructure bugs in CI before deployment.
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AI10 min read
LLM Prompt Management — Versioning, Testing, and Deploying Prompts Like Code
Treat prompts as code with version control, A/B testing, regression testing, and multi-environment promotion pipelines to maintain quality and prevent prompt degradation.
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nodejs6 min read
Node.js Built-in Test Runner — Ditch Jest and Vitest for Zero-Dependency Testing
Node.js 18+ includes a native test runner. Learn how node:test replaces Jest and Vitest with zero dependencies, built-in mocking, and sub-second test runs.
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testing9 min read
Node.js Testing in 2026 — Vitest, TestContainers, and Testing Without Mocking Everything
Move beyond Jest mocks. Use Vitest for ESM support and speed, TestContainers for real databases, MSW for HTTP mocking, and contract testing with Pact for production confidence.
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Penetration Testing9 min read
Backend Penetration Testing — What to Test Before Your Enterprise Customers Do
Comprehensive penetration testing checklist: IDOR, authentication bypass, rate limiting, XXE, SSRF, mass assignment, GraphQL introspection, API fuzzing, and ZAP integration.
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prompts12 min read
Prompt Versioning and Testing — Treating Prompts Like Code
Manage prompts with version control, automated regression testing, eval datasets, A/B testing in production, and canary deployments for safe prompt evolution.
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RAG11 min read
Evaluating Your RAG Pipeline — RAGAS, Faithfulness, and Answer Quality Metrics
Master the RAGAS framework and build evaluation pipelines that measure faithfulness, context relevance, and answer quality without expensive human annotation.
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testing7 min read
Integration Testing With TestContainers — Real Databases in Your CI Pipeline
Use TestContainers to run real PostgreSQL, Redis, and Kafka in tests. Isolate data per test, parallelize safely, and catch integration bugs before production.
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