API Testing with Playwright & TypeScript

Book Description

Modern applications rely heavily on APIs. If your APIs fail, your entire system can break. Yet many testers and developers still struggle to build reliable, scalable API test automation frameworks.

API Testing with Playwright & TypeScript is a practical, hands-on guide designed to help you master API testing from the ground up using one of the most powerful modern testing tools available today.

Whether you are a QA engineer, automation tester, developer, or DevOps professional, this book will guide you step-by-step from the fundamentals of API testing to building a production-ready automation framework using Playwright and TypeScript.

Instead of focusing only on theory, this book emphasizes real-world examples, practical patterns, and industry best practices that professionals use in modern CI/CD environments.

You will begin by understanding the core foundations of HTTP and REST APIs, then quickly move into writing your first API tests with Playwright. As you progress, you will learn how to build complex requests, validate responses, handle authentication, manage environments, and test edge cases.

Later chapters dive deeper into advanced testing patterns, request mocking, test organization, and CI/CD integration, ultimately guiding you toward building a complete, scalable API testing framework suitable for enterprise projects.

By the end of this book, you will have the knowledge and confidence to design robust API automation suites that are maintainable, reliable, and fast.