test-suite-builder

Layered Kotlin Spring Boot tests separate domain logic into unit tests, framework boundaries into slice tests, and infrastructure into integration tests. This strategy balances execution speed, realism, and regression value without re-implementing logic.

Deterministic Kotlin coroutine unit tests use JUnit 5, MockK for mocking, and the runTest builder to control virtual time. Reusable fixtures or object mothers ensure explicit setup and keep test code production-grade.

Use Spring Boot slice tests to isolate framework boundaries like web or persistence layers without starting the full context. Choose integration tests only when a realistic dependency graph or actual infrastructure is required to validate behavior.

Yes, MockK integrates seamlessly with JUnit 5 for Spring Boot slice tests. This combination allows you to mock dependencies at framework boundaries while keeping slice tests fast, readable, and focused on specific layers.

Generate a Kotlin Spring test plan by defining a structured output contract that includes test strategies, generated test artifacts, data support fixtures, and explicit coverage gaps. This ensures the lightest effective tests are prioritized.

Spring Boot integration tests fail for Kotlin domain logic when they are too heavy and re-implement logic instead of proving behavior. Prioritize the smallest unit tests that would have failed before the change to maintain speed and regression value.