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DZone Testing, Tools, and Frameworks Zone

Recent posts in Testing, Tools, and Frameworks on DZone.com

Global Setup in Playwright TypeScript for API Testing

If you need to generate prerequisite test data, such as adding dummy records through an API, before executing your test suite, using Global Setup i...
Posted on 15 October 2026 | 1:00 pm

Azure Key Vault Secrets That Reconcile Themselves in Go, With mamori

Azure Key Vault is the well-behaved citizen of the Azure secrets world. Every secret is versioned; you get soft-delete and purge protection; access...
Posted on 14 October 2026 | 4:00 pm

How to Test PUT, PATCH, and DELETE API Requests Using Playwright TypeScript

API testing is the practice of verifying that an API behaves as expected. In Agile environments, teams often perform it early in the SDLC as part o...
Posted on 14 October 2026 | 3:00 pm

Rotate AWS Secrets Manager Secrets Without Restarting Your Go Service, With mamori

AWS Secrets Manager has a lovely feature: automatic rotation. You attach a rotation Lambda, set a schedule, and every 30 days your RDS password is ...
Posted on 14 October 2026 | 2:00 pm

Introducing mamori: Typed, Watchable Config and Secrets for Go

Every Go service I have ever shipped ends up growing the same organ. It starts small: a couple of os.Getenv calls. Then a secret needs to come from...
Posted on 14 October 2026 | 12:00 pm

Builder Pattern + Faker in API Test Automation Using Playwright With TypeScript

Ever felt stuck writing Playwright tests because of messy or hardcoded test data? It usually starts simple, but as your tests grow, like testing an...
Posted on 13 October 2026 | 5:00 pm

Your Visual Regression Suite Is Mostly Testing Anti-Aliasing

Visual regression testing has a dirty secret: most of the failures it reports are not bugs. They are anti-aliasing differences, sub-pixel layout sh...
Posted on 13 October 2026 | 3:00 pm

Multi-Agent Orchestration on AWS With AgentCore Runtime and A2A

Most agent projects start the same way: one model, one prompt loop, three or four tools. That's the right place to start, and for a lot of workload...
Posted on 9 October 2026 | 4:00 pm

Production-Grade LLM Regression Testing: Contracts, Evals, and Quality Gates

Conventional unit tests remain essential around an LLM application, but they do not answer the most important production question about whether a c...
Posted on 9 October 2026 | 12:00 pm

Supercharging AI Agents with Azure Context: A Hands-On Guide to Azure MCP

As Large Language Models (LLMs) continue their rapid trajectory of development, software engineers and cloud architects regularly run into two syst...
Posted on 8 October 2026 | 6:00 pm

Metamorphic Testing For LLMs: The Oracle Problem's Most Underused Answer

Metamorphic testing (MT) is a practical way to generate test cases and verify results when exact oracles are hard to define. Metamorphic relations ...
Posted on 7 October 2026 | 6:00 pm

From Issue to Reviewable Patch: Build a Sandboxed Coding Agent With Deep Agents and Automated Tests

A coding agent becomes useful to an engineering team only when its output is more than plausible source code. The real unit of work is a reviewable...
Posted on 7 October 2026 | 2:00 pm

Building and Serving a Custom Model With Azure ML, Then Wiring It Into a Foundry Agent

The Foundry model catalog covers a lot of ground, but it doesn't cover everything. If you need a model trained on your own proprietary, tabular dat...
Posted on 6 October 2026 | 6:00 pm

Reproducible WebRTC Failure Testing With Playwright and coturn

Testing how a WebRTC application behaves when the network fails is usually done by hand: open two browser windows, turn off Wi-Fi, count to ten, tu...
Posted on 5 October 2026 | 7:00 pm

I Tried Building a "Token Optimization Stack" for Coding Agents. Here's Why I Killed It.

How It Started This started from a plain problem: I kept hitting token limits at work. I was using Claude Code for real engineering work, and I was...
Posted on 5 October 2026 | 5:00 pm

Agentic Test Creation: From Plain-Language Requirements to End-to-End Test Cases

Throughout my career, I've watched sprints stall in the same place. Everything was going fine: the features were merged, the requirements were clea...
Posted on 2 October 2026 | 7:00 pm

Beyond Clicking Buttons: Build a Browser Agent That Verifies Its Results With Playwright MCP

Browser agents become useful when they can do more than reach the right page and trigger the right control. A click is only an attempted action; it...
Posted on 2 October 2026 | 2:00 pm

AWS 7R Migration Strategies: A Decision Framework for Engineering Teams

Most AWS migration projects don't fail because of technical complexity. They fail because teams treat migration as a single activity rather than a ...
Posted on 30 September 2026 | 4:00 pm

Predict, Repeat, Improve: Deterministic Simulation Testing Explained

It’s 2 AM. Your phone buzzes, the on-call alert flashes, and suddenly you are staring at a production outage that makes no sense. Following the log...
Posted on 29 September 2026 | 7:00 pm

A Deep Dive into the Microsoft Foundry Document Intelligence SDK: From PDF to Structured Data

Most "RAG over PDFs" pipelines have a step nobody talks about much: something has to turn a scanned invoice, a multi-column contract, or a photogra...
Posted on 29 September 2026 | 5:00 pm