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Consumer-Driven Contract Testing with Pact
3.1The Problem Pact SolvesIn a microservices architecture, service A calls service B. If B changes its API, A breaks. But B's own tests pass because B does not know…3.2The Pact WorkflowThe consumer team writes tests that describe what they expect from the provider. These tests run against a Pact mock server, not the real…3.3Why Pact Matters for AI-Augmented TestingTraditional Pact workflow requires manual contract writing -- a tedious process that teams often skip. AI changes this by:3.4Anatomy of a Pact ContractProvider States: Preconditions that must be true for the interaction. "product ABC-123 exists" means the provider's verification test must…3.5Writing Consumer Tests3.6Provider VerificationThe provider team runs verification to ensure they meet all consumer expectations:3.7Pact in CI/CDThe broker tracks which consumer versions are verified against which provider versions, enabling safe independent deployments.3.8Key TakeawayPact's consumer-driven approach ensures that API changes do not break consumers -- a problem that traditional API testing misses because…