Functional Testing<\/a> in the context of an API<\/a> focuses on ensuring that the interface behaves exactly as specified by its technical documentation. Unlike non-functional testing, which looks at performance or security, functional testing validates the business logic and the correctness of the data returned by API Endpoints<\/a>. Common protocols scrutinized during this process include REST<\/a>, SOAP<\/a>, and GraphQL<\/a>.<\/p> When performing functional tests, QA Engineers<\/a> typically verify the following components to ensure system reliability:<\/p> Several tools are industry standards for automating these checks. Postman<\/a> is widely used for exploratory testing and collection-based automation. For Java-based environments, Rest-Assured<\/a> provides a domain-specific language for testing REST APIs<\/a>. Other notable tools include SoapUI<\/a>, JMeter<\/a>, and Swagger<\/a> for documentation-driven testing.<\/p> For more in-depth methodologies, practitioners often refer to resources like the SmartBear API Testing Guide<\/a> or the Postman Learning Center<\/a> to refine their Test Automation<\/a> strategies.<\/p>Key Validation Criteria<\/h2>
Popular Tools and Frameworks<\/h2>