api-testing-patterns

Contract testing validates API agreements between consumers and providers using consumer-driven contracts like Pact. This Skill covers patterns for REST and GraphQL APIs, enabling you to verify provider responses against contract specifications and catch integration failures early in CI/CD pipelines.

API testing in microservices requires layered patterns: contract testing for provider agreements, component testing for isolated API behavior, and integration testing for end-to-end flows. This Skill provides comprehensive patterns covering all three levels, plus schema validation, authentication checks, and idempotency testing for robust microservice APIs.

Automate API testing by integrating schema validation, contract tests, and test generation into your CI/CD workflow. This Skill covers CI/CD integration patterns, automated test creation, and production monitoring to detect contract drift and validate API changes continuously.

Yes. This Skill includes patterns for authentication and authorization validation, idempotency testing to ensure safe retries, and concurrency testing to handle simultaneous requests. These patterns protect against common API vulnerabilities and edge cases in production environments.

Contract testing validates API agreements in isolation, component testing checks individual API behavior without dependencies, and integration testing verifies end-to-end flows across services. This Skill provides distinct patterns for each level, helping you choose the right test type for your microservice architecture.

Production monitoring patterns in this Skill detect when live APIs diverge from their contracts, catching undocumented changes that break consumers. Combined with schema validation, you gain visibility into contract violations before they impact dependent services.