API Testing
API testing is a software testing practice that focuses on verifying the functionality, reliability, performance, and security of application programming interfaces (APIs). It involves sending requests to API endpoints and validating responses to ensure they meet specifications, handle errors properly, and integrate correctly with other systems. This type of testing is crucial for modern applications that rely on APIs for communication between services, such as in microservices architectures or third-party integrations.
Developers should learn API testing to ensure the robustness and reliability of their applications, especially when building or consuming APIs in distributed systems, web services, or mobile apps. It is essential for catching bugs early in the development cycle, validating data exchange, and maintaining API contracts, which helps prevent integration failures and improves overall software quality. Use cases include testing RESTful APIs, GraphQL endpoints, SOAP services, and ensuring compliance with API documentation like OpenAPI specifications.