developer-delphi-testing-integration

You can run Delphi integration tests against a real SQLite database using BEGIN/ROLLBACK transaction isolation. This approach wraps each test in a transaction that is rolled back, ensuring persistent state is validated without permanently modifying the database.

Integration testing in Delphi validates cross-layer business rules across repository, service, and domain layers against a real database. Unit tests with mocks isolate individual modules, whereas integration tests verify that modules work together correctly with persistent state.

Yes, you can use FireDAC with SQLite to verify cross-layer business rules. This setup allows you to execute smoke tests and validate module initialization across repository, service, and domain layers using real database interactions.

You can set up reusable data fixtures for Delphi smoke tests by combining them with BEGIN/ROLLBACK isolation. This ensures test repeatability by resetting the SQLite database state after each test runs.

You should use BEGIN and ROLLBACK for test isolation when running integration tests that modify persistent state. This mechanism ensures each test runs in isolation and maintains repeatability across the SQLite database without leaving residual data.

Yes, this approach supports testing domain logic and services together in Delphi. It provides cross-layer coverage that includes repositories, services, and domain logic, ensuring that all layers integrate correctly against the SQLite database.