Application Programming Interface and Contract Testing Questions

Integrating application programming interface testing and contract testing into test automation strategies and pipelines. Candidates should understand how to design and automate tests for representational state transfer and GraphQL interfaces, how to mock or stub external services, and how to implement consumer driven contract testing to ensure compatibility between producers and consumers of services. Topics include API request and response validation, schema verification, performance and reliability considerations, combining API tests with user interface tests for end to end coverage, and integrating these tests into pipelines so that API contract violations are detected early and used to gate deployments.