Which of the following are tools for blackbox integration testing?

Blackbox integration testing involves testing the functionality of a system without examining its internal structures or workings. It focuses on inputs and expected outputs, validating that the system behaves as expected in scenarios that mimic real-world use cases.

The tools mentioned in the chosen option are specifically designed for interacting with APIs and validating the responses received from these integrations. SOAPUI is well-known for testing SOAP and REST web services, providing capabilities to send requests and assert responses without needing access to the underlying code. Restlet Client allows similar functionality, designed primarily for RESTful interfaces, facilitating endpoint testing and allowing users to simulate requests. REST-assured is a powerful library specifically for testing REST APIs, emphasizing simple syntax and assertions that validate response contents seamlessly.

In contrast, while tools like JMeter and LoadRunner can be used for performance testing, they do not primarily focus on verifying the correctness of API responses, which is a key component of blackbox testing. Similarly, JUnit, Mockito, and TestNG are primarily testing frameworks for unit testing and often require knowledge of the implementation, making them less suited for blackbox testing scenarios. Selenium is primarily used for browser automation and UI testing, while Cucumber allows for behavior-driven development but is not specifically tailored towards API response validation.