rspec-service-testing

RSpec tests for service objects follow TDD by writing specs first under `spec/services/`, then implementing business logic to pass them. Structure tests to cover success, failure, and edge cases, isolating external dependencies with mocks to keep tests deterministic and focused on the service's core logic.

RSpec service tests verify transaction commit and rollback by asserting database state changes within the test context. Write specs that confirm data persists on success and reverts on failure, using mocks to simulate external dependency failures and trigger rollback scenarios.

Validate Result objects in RSpec by asserting on their status, payload, and error fields. Test both success and failure paths, checking that the service returns the correct structure with expected data or error messages for each scenario.

RSpec handles multi-step business logic by writing service specs that mock external dependencies and verify each workflow stage. Test transaction boundaries, state transitions, and error handling across the entire process to ensure correctness in TDD.

RSpec includes built-in mocking and stubbing capabilities sufficient for service object testing. Create isolated tests by mocking external services, APIs, and database calls, allowing service specs to run fast and deterministically without external system dependencies.

Test-first development with service specs clarifies requirements, prevents bugs, and ensures business logic handles success, failure, and edge cases correctly. Writing specs first drives a cleaner design and provides living documentation of expected service behavior.