Cloud API Testing

Following the Service-Oriented Architecture, Cloud services are exposed as Web APIs (Application Program Interface), which serve as the contracts between the service providers and service consumers. With increasing massive and broad applications of Cloud-based development, a large number of diversified APIs are emerging. Due to their wide impacts, any flaw in the cloud APIs may lead to serious consequences. API testing is thus necessary to ensure the availability, reliability, and stability of cloud services. The research proposed an approach to automating API testing following the model-driven architecture, so that services can be continuously fetched, analyzed and validated. A prototype system ATcloud was constructed to illustrate the process of API understanding, test scenario modeling using directed graph annotated with transfer probabilities between operations, cloud-based test resources management, distributed workload simulation, and performance monitoring.