Backend Contract Testing

Purpose

Use consumer-driven contract (CDC) testing with Pact to verify that provider services satisfy consumer expectations, replacing brittle end-to-end integration tests with fast, deterministic contract tests.

Agent Protocol

Trigger

Exact user phrases: "contract testing", "Pact", "consumer-driven contracts", "CDC", "provider verification", "pact test", "pactflow", "contract test", "consumer test", "provider test".

Input Context

• Service architecture: list of consumers and providers.
• Existing test framework (Jest, JUnit, pytest, etc.).
• Pact broker or PactFlow URL if available.

Output Artifact

Pact test code snippets or Pactfile. No file unless requested.