Rest Assured API Testing: From Basics to Framework Design

In modern software development, API testing is crucial for ensuring fast, reliable, and secure integrations before code ever reaches production. This text-based course guides you through the process of automating these tests using Rest Assured, the industry-standard Java library. You will start with the absolute fundamentals of APIs, HTTP methods, and JSON structures before writing your first automated test. As you progress, you will learn how to handle complex authentication flows, validate responses, mock external services, and design a scalable automation framework from the ground up. What you'll learn: - Understand core API concepts, HTTP methods, status codes, and JSON/XML response structures. - Configure Rest Assured and write automated GET, POST, PUT, and DELETE requests. - Validate response headers, cookies, and schemas, and implement detailed request/response logging. - Handle advanced authentication methods, including Basic Auth, Digest Auth, and OAuth 2.0, along with query and path parameters. - Apply modern serialization and deserialization techniques using Jackson to map payloads to Java objects for type-safe test design. - Mock API dependencies using WireMock and structure a clean, maintainable test automation framework. The curriculum begins with foundational concepts of web services and testing tools, transitionally moving into writing test scripts and managing complex request payloads. Finally, you will explore advanced framework architectural patterns and mocking strategies to make your test suite production-ready. This course is designed for quality assurance engineers, software testers, and developers who are new to API automation. A basic understanding of Java is helpful, but no prior API testing experience is required. Start reading today to build reliable, automated API test suites that elevate your software testing career.