Practical API Testing: Manual, Swagger, and JavaScript Automation

Modern software relies heavily on APIs, making API testing one of the most in-demand skills for quality assurance professionals today. This text-based course guides you from understanding basic HTTP requests to writing automated API tests. You will shift from a manual tester to a confident API QA engineer capable of reading technical documentation, validating server responses, and writing automated test scripts. You will understand how real-world servers process logic and how to find critical vulnerabilities and bugs before they reach production. What you'll learn: Understand core HTTP concepts, status codes, methods, and RESTful API architecture; Analyze API documentation using Swagger to design effective test cases and bug reports; Perform manual API testing by sending requests and validating JSON payloads; Apply JavaScript fundamentals to write automated assertions and test scripts; Identify common API security vulnerabilities and validation errors; Prepare for technical QA interviews with real-world scenarios and common questions. The course begins with foundational API terminology and HTTP basics before moving into manual testing with Swagger documentation. Finally, you will explore JavaScript programming basics to automate your verification steps and prepare for technical interviews. This course is designed for beginner QA engineers, manual testers looking to upgrade their skills, and anyone interested in backend software quality assurance. No programming experience is required. Start reading today to master the essentials of manual and automated API testing.