REST API Automation in C# with RestSharp and HTTP Client

Modern software architectures rely heavily on microservices and APIs, making automated API testing an indispensable skill for quality assurance. This course introduces you to the core principles of RESTful services and guides you through automating API tests using industry-standard tools. You will progress from understanding basic HTTP methods to designing a structured, maintainable API testing framework in C#. Through clear, written explanations, you will learn how to send requests, validate responses, manage authentication, and run tests in parallel to optimize execution speed. What you'll learn: - Understand fundamental REST API concepts, HTTP status codes, headers, and payloads - Master GET, POST, PUT, and DELETE requests using both HTTP Client and RestSharp - Implement modern async/await patterns and parallel test execution with MSTest to speed up test suites - Handle complex authentication mechanisms including token-based and session-based security - Apply modern JSON serialization practices using C# type-safe data models - Build a reusable, structured API test automation framework from the ground up The course begins with foundational API concepts and terminology before moving step-by-step through practical implementation. You will explore real-world API integration scenarios, authentication flows, and advanced framework design techniques. This course is designed for beginners to API testing and QA engineers looking to transition from manual to automated testing using C#, with no prior automation experience required. Start reading today to build reliable, high-performing API test suites.