integration-testing

Run end-to-end integration tests by wiring a live database directly to the real application. This validates data flows, schema constraints, and external interfaces across integrated components using production-like code paths without internal mocking.

Use real database integration testing when you need to validate data flows and schemas across integrated system components. Mocks should be minimal, applied only to external boundaries, so tests focus on uncovering live configuration and data constraint issues internally.

The best way to validate data flows is end-to-end integration testing with a real database and real application. This approach connects live configurations to uncover integration issues and ensures external interfaces are exercised across the actual system boundaries.

Yes, a live database is required for production-like integration testing. Access to a real database allows tests to execute actual code paths and validate data constraints, utilizing minimal boundary mocks only for external interfaces rather than internal dependencies.

Yes, boundary mocks are applied exclusively to external interfaces during integration testing. This minimal mocking strategy ensures tests validate core internal data flows and schema constraints against the real database without isolating internal integrated components.

Integration testing with internal mocks fails to catch schema constraints because it bypasses the real database. Wiring a live database and real application is required to validate data flows, constraints, and true production-like configurations across system components.